Clock pendulum components description
Altogether, this is a description of the clock pendulum parts and components. Please use this as a glossary of the parts to a clock pendulum assembly. Knowing the correct terms for the various pendulum parts is helpful when locating replacements. We are pretty adept at deciphering descriptions of parts however knowing the name is always something we welcome.
The clock pendulum
First, a clock pendulum includes the bottom rating nut and threads, the pendulum bob, and top hook.
Additionally, these items are removable on wood stick pendulums only. Lyre metal clock pendulums do not have the ability to come apart.

Clock pendulum leader
Second, a leader is the part that the pendulum hangs onto when it is on the clock. It then in turn hooks to the suspension spring on the very top of the pendulum assembly.
Naturally, pendulum leaders vary depending on the manufacturer of the clock movement and they can also vary in length as well as style. Sometimes there can be more than one type of leader for the same movement.
There are also instances where we custom make leaders for customers.

Suspension spring description
The clock pendulum suspension spring is the short spring steel part on the very top of the pendulum assembly. Its purpose is to suspend the leader and pendulum in the air. Generally speaking, its steel spring like strips flex to let the pendulum swing back and forth with ease and momentum.

Clock Pendulum Components Complete
In summary, the clock pendulum components description includes the pendulum hanging on the leader and the leader hanging on the suspension spring.
Put the complete pendulum assembly on the clock and it is ready to go. The next step is to put the clock in beat and run the clock to see how the time keeping is.

Replacing Lost Pendulum Parts
By and large, replacing a lost pendulum part from its assembly is a process. It is more in depth than just matching up the broken pendulum part. Certainly, narrowing it down requires a different method than just observation. The following text will guide you through that process.
The lost pendulum
First, identify the movement manufacturer. This is the beginning step to identify a lost clock pendulum. This is done by getting the movement numbers off of the back plate of the movement itself. That is to say, it will not be in the manual that came with the clock. Moreover it will also not be on any stickers or the clock case.
Match the movement number here to find out who made the movement. Finally, proceed to the pendulum page. This is the first step in replacing a lost pendulum as well as replacing lost pendulum parts.

Lost pendulum leader
The leader hooks to the suspension spring. The suspension spring is at the top of the movement. The pendulum hangs onto the leader.
All or some of these parts are what you need to order to replace lost pendulum parts. Again, the order of the parts is the suspension spring, the leader, then the pendulum.

If the leader is missing, identify who made the movement. Use the above information to correctly identify the movement so it is possible to replace the pendulum part. The leader possibilities are narrowed down considerably upon knowing who made the movement. This makes things much easier when replacing lost pendulum parts. After knowing the manufacturer, match the information to a leader shown on this page.
In the final analysis, visually inspect the pendulum hook style, the crutch on the back of the movement, and the suspension hook. Finally, compare the components of the clock to the options in that manufacturer category to figure out the best one. Replacing lost pendulum part can be tricky however with these descriptions the task should be less daunting.

The lost suspension spring
First know that style A is the very most common suspension spring style in existence. Check the top of the pendulum leader and if there is a double hook on the end it will be style A required for the clock.
Generally speaking, style A3 is used for large grandfather units, A2 for grandmother and wall clocks, and A1 for mantle clocks. Suspension spring are one of the easier parts to ascertain when replacing lost pendulum parts.

The mechanical clock pendulum length
A pendulum clock without a pendulum is a shame for sure. Hence, getting the mechanical clock pendulum length correct does take some diving into the clock world.
If there is no idea what pendulum it would take, this is a basic guide. Of course, this is a basic guide to narrow it down to the best pendulum for the clock. This will cover most situations, without special equipment to figure out the length.
The movement CM or PL stamp
On the back plate of the clock movement usually, there are some numbers and or letters for identification. Likewise, there may be an indication of how long the pendulum should be in the mix of these numbers.
It may say CM or PL and this stands for centimeter or pendulum length. Subsequently, this would be the length where it should keep approximate time. Generally, this is measured in a few different ways usually dependent on country of origin.
Mechanical Clock Pendulum Length for German made movements
Most mechanical German made clock movements are easy to figure out the pendulum length. In essence, the numbers will let us know or the stamp will clearly state the CM or PL number. If it is German, keep in mind the CM length is not the actual pendulum length.
Altogether, German units measure this length from the top of the clock movement, and this includes the three components of the pendulum all in one length, in centimeters.
This length will include the pendulum itself, the leader that it hooks to, and the suspension spring on the top that the leader hooks on to, all in one CM measurement. To clarify, CM stands for centimeter and PL stands for pendulum length.
If no stamp try to convert
With no pendulum length stamped into the movement some added steps are involved. The numbers on the back plate will cross reference to the pendulum length required. The first step is to identify the manufacturer of the clock movement by using the movement numbers.
The movement numbers indicate who actually manufactured the movement. Various clock retailers may have have their name stamped onto it, but the numbers are always true to the manufacturer.
Converting numbers to CM length
Moreover, some movements do not have an indication of the pendulum length on the back plate. The unit will have a number that would need to be found on this website first to find out what the correct CM length is for it.
Converted number example
Generally speaking, let's say that the movement has no CM stamp on the movement and only shows the Urgos number UW32319.
Go to the identification page to look at the movement number examples. In this example, we see that it is a Urgos. Now it is possible to go to the Urgos page and find the number to see what the pendulum length is.
In this example, the pendulum length would be 80cm, representing the full length with the size of the bob factored in.
German grandfather movements
Almost all grandfather clock movements are going to be German if made after 1950. The first thing we need to do is get the numbers off of the back plate of the movement. This is the only way, and we can't cheat by looking at the paperwork or clock case.
It has to come right off the back of the clockworks. The manual and the sticker on the case is of no use to get the pendulum.
American clocks
The American mechanical clock movement manufacturers referred to the pendulum length as a "drop". The drop is the length of the pendulum from the hand shaft all the way down to the bottom of the pendulum rating nut threads.
It is a different way of measuring the pendulum length then the German made way. Both ways are based on the smallest bob diameter bob. If the bob is larger or heavier, the length would be longer than what is stamped.
No luck
If everything fails for one reason or another, the best chance for a pendulum is the wood stick style. This is the only style of pendulum that can be easily modified because it can be chopped down.
These types of clocks are usually antiques, or of Asian origin, and information such as pendulum length is simply not available. Sometimes it takes a good guess on where the manufacturer intended to have the bob sit.To do it this way, it is only needed a pendulum with a stick that is way too long to begin with.
Chop it, try it, chop it, try it. Each time slow, cut an inch and half off of the sticks length and hang it back on. It will only take a couple of times, and if starting way too long it can always go shorter.
Clock makers method for Mechanical Clock Pendulum Lengths
There is another way, its called setting the beat rate. This is a more involved way and usually just done by clock makers. It involves a beat detecting device that counts out the beats per hour, or the beats per minute. To do this, first figure out what the beat rate is supposed to be for that particular movement.
Then keep adjusting the pendulum length until it keeps time. There are cell phone apps out there these days that will tell the beat rate and the cell phone will listen and say if the clock will keep time with that pendulum. Go longer or shorter until the phone says the beat rate is set.
Contacting us for help with Mechanical Clock Pendulum Lengths
Please email the movement numbers from the back plate, and explain what part is needed. The email address to send this information is [email protected] Pictures are welcomed but not required. If emailing pictures please include the back side of the clock movement where the markings are.
Timing a mechanical pendulum clock
Timing a mechanical pendulum clock is all about the overall pendulum length. Rarely has anything to do with the movement itself, unless the movement not geared to the proper length from the start.
A mechanical clock is easy to time providing the correct pendulum. When the pendulum is correct for that particular movement it will hang on the leader and keep approximate time.
The fine timing can be done only with the pendulum adjustment located at the very bottom. At the bottom of the bob is some adjustment threads and a nut.
To turn the nut one way raises the bob and the other lowers it. A shorter pendulum will make the clock run faster. A longer pendulum makes the clock run slower.
Fine timing the clock
If the clock is timing slow, raise the pendulum bob by turning the nut at the bottom of the bob. If the clock is fast, do the same but lower the clock's pendulum bob instead. One full turn is somewhere around 1-2 minutes a day faster or slower.
If there is no more adjustment
If the bob is all the way up and its still too slow or fast, shorten either the pendulum or the leader it hangs on to correct.A lyre pendulum that does not keep time with the bob all the way adjusted will need its length altered. It can be altered with the overall length by the pendulum itself or the leader it hangs onto.
The leader is about 5 to 7 inches long and engages with the crutch on back of the movement. The leader is the part that the pendulum top hook will mount to.
It is possible to shorten or lengthen the pendulum leader to put the clock in time range with some solder if needed. 1 3/4 inches is a good measurement to make one of these longer or shorter as needed, as this is the length of the threads at the bottom of the bob.
So it will give a full timing adjustment range all over again and can go up or down as needed.
German pendulum length CM stamp
The pendulum length is overall and not just the pendulum itself. These German units measure there pendulum lengths from the top of the movement and all the way down. This will include the suspension spring, the leader and also the pendulum itself.
This is based on a 4 1/2 inch bob diameter. Of course the larger the bob, the longer it will be beyond that CM stamp measurement.
Used to keep time, now does not
If the clock kept time in the past but now does not, it means a worn gear. The escape wheel is worn and it is advancing more than one tooth at a time.
The escape wheel alone would be hard to find, and hard to replace both. The entire movement would be disassembled to replace this worn escape wheel if there is another one found that will work.
The cost of having this done would be the same price as a new movement. There is no such thing as having a repair on a clock movement being better than a new movement.
The price would be about the same for a complete overhaul or a brand new one. First see if the clock movement is in production and available new. We do this by getting the numbers off of the back plate of the movement itself, right off of the brass. Please email and we will check the availability and quote for the new one.
If the movement is not in production anymore, then a movement restoration is the only option. The movement can be shipped to Clockworks Attn Repair department for a beautiful restoration.
Mechanical Pendulum Clock Timing Issues - Conclusion
Fine timing of the clock is easy as seen. If the clock kept time in the past and now too fast, its time for a new movement and has nothing to do with the pendulum. A worn escape wheel is most likely the cause and a new unit would be less cost then a repair.
Clock Pendulum Suspension-Spring Information

The following is a discussion on clock pendulum suspension-spring information. Naturally, suspension springs do not have to be exact in length. If the clock runs slow, simply raise the pendulum bob with the rating nut at the bottom.
Likewise, if the clock is running fast then turn the rating nut to lower the pendulum bob.

Most common springs
By and large, suspension spring A is the most common style suspension spring. Of course, it is most likely the one by default.
If the old suspension spring looks similar to this one then it is right. As a general rule of thumb, small mantle clocks take suspension A1, wall clocks and small grandmother units will take suspension A2.
The A3 size is for grandfather clock units with a larger pendulum bob diameter.
This size can also be seen on Grandmother clocks with larger bob diameters. Use the larger A3 with large bob diameters so the bob will not wobble front to back.
If using a pendulum with a bob of 8 1/2 inch diameter or larger please order Suspension A3 for this reason.
Not as common
Urgos uses the single hook style as seen in picture suspension B. However suspension A was the very most common to use.
Very old antique round movements mainly use Suspension C and Suspension D. These are mainly French clocks and US made units made prior to 1945.
Clock Pendulum Leaders
Mechanical pendulum clock leaders for post 1950 movements. These leader will fit clock movements made in Germany after WW2.
The first step to replace a lost leader is to visually match one to the old leader.
If the leader does not match up to any of the ones listed, please email us. A picture is always helpful. Look to see if the leader needs a double hook or a hole top in order for it to mount to the suspension spring. Similarly, check the other end and notice that configuration as well.
What is the required mount style for the pendulum to hang on the clock? In the middle section, what one will engage with the swinging crutch on the back of the movement? These are all important factors to consider when replacing the leader.

The length of the leader
If the leader is missing, however, there are some more steps to figure out what the leader length should be. Not all leaders have variable lengths and the ones that do are for Hermle and Kieninger clock movements only.
Kieninger is easy. Those leaders only come in two lengths. Grandfather clocks by Kieninger take the 7 inch leader. Wall and mantle units take the shorter leader.
Hermle leaders are much more in depth. Determining which leader is the correct length for a Hermle is a process. The next section will describe the ones available.

Hermle leader lengths
A Hermle floor or wall clock will always take leader D or G. leader E is for a low bridge to a high bridge conversion on a Hermle grandmother clock. Therefore, the elimination of this from the list of choices is viable if a conversion is not being done.
The next choice is leader F which is for mantle clocks. This one is also for creating custom pendulum lengths. Additionally, leader F and leader G are interchangeable.
So if you need leader G, a leader F can take its place with an alternate length. Please email us with any questions about Hermle leaders.

Leader F for Hermle mantle
Usually mantle clocks with a Hermle clock movement will take leader F. In a situation where the leader is missing and the length is unknown, the following steps need to be taken.
This will ensure that the correct leader length is chosen. First, use the CM number off of the back of the movement. This CM length is the pendulum length from the top of the movement all the way down to the bottom of the pendulum.
It is not the length of the pendulum itself. Often times this measurement can be confusing. It is important to measure this correctly. Failure to do so will result in the clock not keeping proper time.

Second step, is to take this CM length and divide it by 2.54 to get the inch equivalent. Then subtract the length of the pendulum and the suspension spring length from this measurement. The measurement that is left is the length needed for leader F.
There are 1 1/2 inches of thread at the bottom of the pendulum for fine adjustment. Because there is so much room for adjustment, this measurement does not have to be exact. If there wasn't any extra length then it would need to be more precise. However this is not the case so close is good enough.
If the leader is the wrong length
The timing of a clock is determined by the length of the pendulum and the weight of the pendulum bob. This can get a bit confusing for some people. The overall pendulum length is stamped on the back plate of the clock movement with a CM number.
This CM stamp is the overall pendulum length from the top of the clock movement all the way down to the bottom of the rating nut. This is based on the smallest bob diameter.
Subsequently, a wider pendulum bob will require a longer pendulum. Again, this can get a bit tricky. Please feel free to send an email with any questions. We will be glad to help.
Often enough a clock will either run too fast or too slow. If the pendulum is too long, the clock will run slow. On the other hand, if the pendulum is too short the clock will run too fast.
In addition, the wrong leader length will also create problems with accuracy. This may or may not be corrected by raising the bob up or down. This is done by turning the rating nut below the bob.
If all else fails, a different leader length may need to be bought. Before shortening a pendulum it would be best to contact us to see if this is the best option. Cutting the pendulum is the last resort.

In Conclusion
As seen, this is not a cut and dry procedure. There are many factors that play into getting the correct combination so the clock will keep correct time. The correct leader is just one part of the whole process.
Sometimes all it takes is a leader that is a bit longer or shorter to correct an issue. There are also times where we have custom made leaders for customers.
Measuring is also important. No matter what situation it is we can surely find a solution. Don't ever hesitate to reach out and ask a question. Pictures are always good to send so we can see what exists now. Email is always the fastest way to contact us.
Clock Pendulum Top Hooks
Mechanical clock pendulum top hooks replace broken top hooks or to build a new pendulum. This is a nice alternative to replacing an entire clock pendulum if the top is broken or missing.
The top hook is the very top of the pendulum that will enable the pendulum to hang on the leader. To clarify, the leader is the 4 to 7 inch long bar that drives the clock pendulum back and forth.

What they fit
In fact, most of the top hooks here fit German post WW2 mechanical pendulum clocks. There are some top hooks that are for, or can only be useful on antique clocks.
It matters only that the pendulum can hang into the air onto the leader and be stable. Antique clock pendulums can use any one of these top hooks if it will do the job.

How to install
The top hook installation is by friction only. Bend the tabs over and use a punch and a hammer to secure it to the wood stick. Another way is to drill starter holes into the top hook and secure with screws or nails.

Mechanical clock suspension spring
This is the most common suspension spring for movements by far. Suspension A1 is for mantle clocks whereas A2 is for wall and grandmother units. The suspension A3 is for larger floor clocks such as a grandfather clock. It is known as a suspension because it suspends the pendulum in the air.
The second part of the name is spring because it flexes back and forth. It would be a good idea if you order a spare spring. One can be put on the bottom of the weight section of the clock for the next time the spring breaks. That way you will not need to search to find a new one.
I need a suspension spring for a Mason and Sullivan Shaker Wall Clock with movement 351-020 75 cm
Suspension A2
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
What suspension spring do I need for my Howard miller wall clock ?
model 612-671. Movement #1051-030. 38 cm 0ver 111.15
Suspension spring A2 if the bob is less than 6 1/2 wide
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Howard Miller floor clock model 610-232. I’m trying to replace the suspension spring and leader arm. My grandson broke and removed both. How do I figure out what the replacement parts are? The clock works find. I just can’t re-hang the pendulum and start the clock.
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
The numbers are 1070175. UR32012B
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Where can I order a 18mm by 8mm suspension spring for uroos grandfather clock
Your on the right page, does not have to be exact
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
My uroos German grandfather clock runs for one minute then stops. I was going to buy a nes suspension spring 18mm by 8mm . Will this solve my problem?
Only if its broken
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Need a suspension spring for 80’s pearle grandfather clock. What side should I order
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Need suspension spring
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have an 8 day Emperor model 100m clock movement with approx 5″ bob
Suspension A2
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Seth Thomas 5 tube grandfather clock with a jauch movement. The suspension spring is broke do you know what the replacement would be?
Suspension A3
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Need a suspension spring for a Grandfather clock with Hermle movement numbers 461-8530 114cm over 60. This is a Ridgeway Grandfather/Grandmother clock. I ordered one from Time Savers and they gave me the wrong part and won’t allow returns. They have other possibilities but can’t guarantee they’ll work with thickness variations. Their numbers don’t match my clock. Thought you might have a better system of cataloguing parts so I can be sure to get the right part. Would appreciate any help you can give me in my quest.
Thanks,
Sharlene Titus
Please order Suspension A3 for that 461-853 from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
It will work perfect
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a trend grandfather clock what suspension spring does it take
Thx
Sal
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have an old trend grandfather clock heaviest wt. is 7 lbs what suspension spring do I need
Hi,
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I Have a Howard Miller wall clock, pendulum powered. The suspension spring has broken. The marking on the back of the movement are APL03 & 354 588. I believe the Mechanical clock suspension spring A2 is the correct spring per your website. Can you confirm prior to me ordering? Thanks!!
Suspension A2 from this link usually
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I Have a Howard Miller Wall clock with Pendulum, works from springs, not batteries. The suspension spring broke. The marking stamped on the back of the movement is APL03 and 354 588. From what I researched on your website, I need your A2 version. Is this correct?
Yes this is true
Suspension A2
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
To whom it may concern,
I have a Ethan Allan floor clock from 1983. The suspension ring on this clock has broke and I ordered one from you a while ago. The part I ordered is a Urgos Clock pendulum suspension spring SUS-B2. During the installation, I found it will not work. The problem is that the mounting hole on this suspension spring is too small. I do not see any other options on your website, but could use some direction an alternate part.
Your help would be greatly appreciated.
Regards,
Barry
A tapered pin will mount it just the same. This is the pin that is fat on one side and skinny on the other. Like this =
https://www.clockworks.com/product/clock-repair-tapered-pins
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hi there, I need a replacement of Pendulum Suspension Spring for my grandfather clock, Kieninger 74R 116 cm, please.
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have an grandfather clock (Emporer Clock Company by Hermle Black Forest Clocks). It is stamped with the numbers 81 at the top, 451-050H, and 94cm/66
I have a manual/parts catalogue that says “for models 189M-199M”
What suspension spring would I need?
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hello, I have a Hermle (451-053 85cm/70.77) what size suspension spring would work best?
Hi
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
How do I know if m y clock is a grandfather clock or a grandmother clock?? All I need is the suspension spring for Jauch 77 but I need the size, A2 or A3? How do I know the difference? Thank you in advance for any information you may be able to provide. JC
A2 for that one
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Barwick model 4858 grandfather. What spring do you suggest?
Hi,
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
From this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
Get all three sizes if you like at this link
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Ridgeway Grandfather clock model number158 serial number 83078 what kind of suspension springs to I need?
Hi,
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
From this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
Get all three sizes if you like at this link
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Thanks clockworks.
What suspension spring fits a Ridgeway Model135?
Hi
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/clock-pendulum-suspension-spring
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a 1950,s FMS mantle clock and the suspension spring is broken & 1/2 of it is missing. The only marking on the back is 12cm 196. Any idea of what spring goes on this clock
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
From this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
Get all three sizes if you like at this link
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Emperor Clock Model 100 M what is the best suspension spring (part number 34), What would you recommend?
Dianne
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have an Ansonia wall clock that requires a new poendlum Spring. Works number is “Ansonia Clock Co”, Model 351-031. The numbers .34cm/114.07 also appear as well as the nimber 77. The original spring a[[ear tp have had a plastic end that was captured in the frame stud. What replacement part do I need? Thanks very much dor any help.
Carl Carson
The suspension spring A2
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James
I have a broken suspension spring from a tall pendulum clock that I want to replace. I have no idea what the make and model of the clock is, I haven’t been able to find it.
I measured the distance between the hole and the little shaft to be about 5/8 of an inch, and not that it should make much of a difference but I measured the shaft to be 1/32 in diameter and the hole 5/64.
Could you kindly point me to the most appropriate suspension spring I can use as a replacement given the above measurements?
This is the best and only option
https://www.clockworks.com/product/tall-case-clock-suspension-spring
It may need to be cut / filed / modified / customized for the clock.
No original parts are made for the clock anymore, so we need to make something that is made and modify to fit
James
What suspension spring fits the Kieninger Jauch Urgos leader? This is for a grandfather clock with a Urgos U 14 works. Thanks
Suspension A3
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James
I have a howard miller long case uw 32001 b what clock spring do I need
The Urgos 32 series requires these components for the top section of the pendulum assembly where it interacts with the movement. The pendulum assembly from the top down consists of the suspension spring that hangs from the top most post sticking out of the back of the movement. Then comes the leader that hangs onto the suspension, the leader is a sort of flat long bar that the pendulum actually hooks on to. So its the suspension on the top, the leader hangs on it, then the pendulum hangs on the leader with the pendulum top hook.
Suspension A2 from this link usually
https://www.clockworks.com/product/mechanical-clock-suspension-spring
Suspension B2 from this link rarely
https://www.clockworks.com/product/urgos-clock-pendulum-suspension
Leader C from this link if the clock is old
https://www.clockworks.com/product/urgos-clock-pendulum-leader-2
If needing a leader for the new style, sorry do not have it right now
The pendulum top hook for a wood stick pendulum is available at this link
https://www.clockworks.com/product/urgos-clock-pendulum-top-hook
James
I have a Seth Thomas A401-000 mantle clock mechanism. Do you know what suspension spring I would need? Thanks.
Please order suspension A2 from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James
I have an Ethan Allen grandfather clock. I need to replace the suspension spring which according to the page should be A3, but the one that broke is the size of an A1. Prior to breaking the pendulum kept stopping after 2 min. could it have been the wrong size?? we inherited so had no records of it. Advise
I have a Ridgeway Tempest Fuget I need the right One for my clock It is a 1973 model
What size suspension spring do you recommend for a Linden Mantel clock with German mechanism #69, 341-020? thank you
Suspension A2
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James
I have a Howard Miller Floor Clock Model # 610-220 for which I need a “Suspension Spring”
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
I have a Howard Miller Clock Co. Grandfather clock. On the mechanism are the numbers 451-050H and 94cm/66. The pendulum spring is broken. Do you have one to replace it?
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
I’m looking for a suspension spring for a Howard Miller 613-108 and Kieninger movement ‘APL01 35cm 354 528’ can someone help?
Suspension spring A2 from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
I am looking for the Suspension Spring and Pendulum leader for a Howard Miller 610-202 with movement UW32664-C (Cross referenced as Urgos 32322). Which parts do I need?? Will order if someone can help me!
The Urgos 32 series requires these components for the top section of the pendulum assembly where it interacts with the movement. The pendulum assembly from the top down consists of the suspension spring that hangs from the top most post sticking out of the back of the movement. Then comes the leader that hangs onto the suspension, the leader is a sort of flat long bar that the pendulum actually hooks on to. So its the suspension on the top, the leader hangs on it, then the pendulum hangs on the leader with the pendulum top hook.
Suspension A2 from this link usually
https://www.clockworks.com/product/mechanical-clock-suspension-spring
Suspension B2 from this link rarely
https://www.clockworks.com/product/urgos-clock-pendulum-suspension
Leader C from this link if the clock is old
https://www.clockworks.com/product/urgos-clock-pendulum-leader-2
If needing a leader for the new style, sorry do not have it right now
The pendulum top hook for a wood stick pendulum is available at this link
https://www.clockworks.com/product/urgos-clock-pendulum-top-hook
James
Hi,I have a Wuersch clock 141-030 and I need the suspension spring,will you please tell me the number of the part.
Thanks.
Would take suspension spring A2 from this link
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James
I have a wall clock with two weights and chains. The only identification I can find on the clock is that it is a E Schmeckenbecher H65 Made in West Germany.
The suspension spring is broken and half is missing but it looks like an A style. Would I be correct in assuming that I need an A2 suspension spring? Thanks
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
Sorry I didn’t quite understand what you are saying about a pendulum with a 6 1/2 inch or less ? The pendulum overall length is about 15 inches with a diameter of 2 ¾ inches.
Would take suspension spring A2 from this link
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James
Hi I have an old grandfather clock
schlagerwerk still is the badhe
i understand they weren’t the builder
however my pendulum spring is briken
it’s 1.00” long
.4375 “wide
.040 “ thick and the spring is .003”
donyou have one that will work
phil
Hi, I am looking for a replacement suspension spring for a DEY time recorder clock. The old one measures 31mm x 7mm. Would you have one of these in stock?
Suspension spring
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
I have a Howard Miller wall clock 151-770. I think the suspension broke. Which one do I need
Please order suspension spring A2
https://www.clockworks.com/product/clock-pendulum-suspension-spring
James
Hi! I have a pearl floor grandfather clock. What size do I need?
The suspension spring A is the most common suspension spring needed. If you have a floor clock it would be suspension A2 or A3 depending on the weight of the pendulum.
If you have a pendulum with a 6 1/2 inch (165mm) or less, use suspension A2. If larger, use suspension A3. Suspension A4 is only for huge clocks with tubes hanging off the back of it (tubular bell units) with a very heavy pendulum.
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
James
What type of suspension spring would I need for a 35 day Centurion wall clock. The one on this clock is missing
That is a tricky one. Sorry do not have that one
James
My wife’s uncle gave her a grandfather clock. He was a master craftsman and made the clock case himself and then installed the Kieninger mechanism. In a recent move, I believe the pendulum spring was broken. I have taken a picture and have attached it. If you know what I need (A3?), let me know that and I will order it.
Correct. Please order suspension A3 from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James
Perfect thanks
I have a west minister wall clock mechanical with 3 weights im trying to hang the pendulum and leader on clock its not fitting am I missing the suspension spring ?
Yes if the clock has the leader and the pendulum it sounds like it is missing the suspension spring.
Suspensions
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
Taper pins to hold it in
https://www.clockworks.com/product/clock-repair-tapered-pins
James
How to determine what spring is needed for a Vienna regulator clock
Is this one an antique? Best to email some pics of the back side of the movement area to clockworks@clockworks.com
James