Heavy Duty Clock Pendulum Drive

(60 customer reviews)

$65.00

Heavy Duty Clock Pendulum Drive

The Heavy Duty Clock Pendulum Drive is a battery unit that can swing most mechanical clock pendulums. The unit is 6 1/4 inches tall (159mm) 3 inches wide (76mm) 2 inches deep (51mm).

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$65.00

SKU: HDPend

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Ships From: USA

Sold By: Clockworks Inc.

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Description


Chiming Pendulum Quartz Clock Movements – Replace, or improve an existing pendulum quartz clock. Or build your own clock creation. – Clockworks

Chiming QuartzAssembly DiagramMovement RemovalQuartz InstallationMovement MeasuringMeasuring Post LengthsDefinitions

Please view these information tabs to learn more Info about Chiming Quartz Movements

Quartz Clock Movement Removal

This note explains quartz clock movement removal from the case. The following does not apply to quartz units made in Germany or inserts.

To remove the movement, you need access to the back of the clock and the front side of the clock dial. There are so many case designs it would not be possible to cover all of the different variations.

The clock case went to together so it comes apart. It may take a bit of probing but there is always a way to take it apart because it went together.

Getting access to the dial area

There are many case designs and styles and there is no way for us to know how the current specific clock went together. Most of the time the removal process is very easy but of course there are some instances where it is not user friendly.

Thus, it is on the users end to be able to access the dial and movement area to continue with the swap out.

Clock hand removal

Quartz clock movement removal always needs the hands to come off first. There are two reasons for this.

First, need to have access to the hardware that mounts the movement. Second, there is no way to take get the movement out of the clock if the hands are still on it. They certainly will not fit through the hole in the clock.

Quartz Clock Movement Removal – Minute hand

Quartz clock movements have two styles of minute hands. One style has a nut that holds it in place and the other style is a friction fit.

The friction fit has no nut and just pulls off with a twist and pull. The second style has a minute hand nut to secure the minute hand. Removal is done by turning the nut to the left with needle nose pliers. Once the nut is loose it only requires fingers to unscrew it.

Hour hand

In a Quartz clock Movement removal task, the hour hand is only a friction fit. Thus, the hour tube tapers down on the movement, meaning it is wider on the low end of it.

This makes the hour hand friction fit only. Just twist the hand and pull it until it comes off.

Second hand

The second hand pulls straight up and off if the clock has one.


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chime quartz battery clock movement


How to Install a Battery Clock Movement

If you’re looking to replace or install a new battery clock movement, you’ve come to the right place. Whether you’re repairing an old clock or building a new one, the process of installing a battery-powered movement is straightforward. At Clockworks, Inc., we offer a variety of battery-operated clock movements, along with all the parts and tools you need to complete your project. Here’s a step-by-step guide to help you get your clock ticking again.

Step 1: Gather Your Tools and Materials

Before starting the installation, gather everything you’ll need. Most installations require just a few basic tools and parts:

Ensure the movement you’re using fits your clock design. If you’re unsure, Clockworks, Inc. offers a range of battery clock movements suitable for different clock sizes and styles.

Step 2: Remove the Old Movement (If Replacing)

If you’re replacing an old movement, carefully remove it from the clock. Start by taking off the hands. Usually, you can gently pull them off by hand, but if they are stuck, a small tool may help. Then, unscrew any nuts or washers holding the old movement in place. Set aside the hands, nuts, and other parts if they are still in good condition for reuse.

Once the old movement is out, inspect the clock face and hands. This is a great time to clean and oil the parts, especially if the clock is older. At Clockworks, Inc., we provide professional clock cleaning and oiling services, ensuring that your clock functions smoothly for years to come.

Quartz Battery Clock Movement

Step 3: Install the New Battery Clock Movement

Now it’s time to install the new battery-powered movement. Follow these steps:

  1. Insert the Movement: Push the shaft of the new movement through the center hole of the clock face from the back.
  2. Secure the Movement: Place the rubber washer over the shaft so the rubber washer is on the back of the dial then place the brass washer to the post on the front of the clock face, then screw the hex nut onto the shaft to secure the movement. Use a small wrench or pliers to tighten the nut, but be careful not to overtighten as it could damage the clock face.
  3. Attach the Hands: First, press the hour hand onto the shaft, ensuring it’s firmly in place. Then, add the minute hand and secure it with the small nut included with the movement. Finally, if your clock has a second hand, press it onto the shaft. Align all hands to the 12 o’clock position before setting the time.

Step 4: Set the Time and Insert the Battery

Once the hands are attached, set the time by gently rotating the minute hand. Do not push or pull on the hands excessively, as this can damage the movement. Once the time is set, insert an AA battery into the back of the movement. You should hear a ticking sound, indicating that the movement is functioning.

If the clock hands aren’t moving or seem to stop after a few seconds, double-check that the hands aren’t touching each other or the clock face. You may need to adjust their alignment slightly.

Step 5: Fine-Tune and Test the Clock

After installing the movement, place the clock upright and observe it for a few minutes. Ensure the hands are moving correctly and that the clock is keeping accurate time. If everything looks good, you’re done!

If the clock isn’t working as expected, troubleshoot by checking the battery, making sure the hands are properly attached, or verifying that the movement is securely in place. For more complex issues, Clockworks, Inc. offers clock repair services, from battery clock movements to mechanical clock repairs. You can count on our expert team to diagnose and fix any problems.

Time-Only Quartz Clock Movement

Common Issues and Solutions

Even with a simple battery clock movement, issues can arise. Here are a few common problems and how to fix them:

  • Hands Sticking: If the clock hands stop moving or catch on each other, adjust them so there’s more space between the hands.
  • Clock Running Fast or Slow: Replace the battery or check that the movement is properly aligned with the clock face.
  • Clock Won’t Tick: Double-check that the battery is inserted correctly, and that the connections inside the movement are not damaged.

If you’re still having trouble, contact our team at Clockworks, Inc. We offer detailed support and repair services to help get your clock back in perfect working order.

Why Choose Clockworks, Inc. for Your Clock Needs

Clockworks, Inc. isn’t just a clock part supplier—we’re also experts in clock maintenance and repair. Whether you’re installing a new battery movement or need help with an older mechanical clock, we have the tools, expertise, and services to assist you.

In addition to providing high-quality clock parts and tools, we also offer:

  • Clock Cleaning Services: Over time, dust and grime can affect the performance of your clock. We professionally clean clock movements to ensure they run smoothly.
  • Clock Oiling Services: Regular oiling is essential for maintaining the health of your clock’s mechanical parts. We use specialized oils designed for clocks.
  • Repair Services: If your clock has more serious issues, our experienced team can repair it. Whether it’s a battery-powered clock or a traditional mechanical timepiece, we’ve got you covered.

Final Thoughts

Installing a battery clock movement is a simple task that can breathe new life into your clock. Whether you’re replacing an old movement or building a clock from scratch, this guide will help you get the job done with ease.

If you need further assistance, or if your clock requires professional cleaning, oiling, or repair, don’t hesitate to reach out to us at Clockworks, Inc. You can find more information about our services or purchase clock movements, parts, and tools on our website at clockworks.com. You can also contact us via email at [email protected].

By following these steps, your clock will be ticking reliably in no time!

Long hands for battery operated clock movements

Quartz clock movement measuring

Please select the post length when ordering a new quartz clock movement. Of course, when doing quartz clock movement measuring, remember the post will need to be able to go through the thickness of the dial face.

Also remember that the dial may or may not have a wood backing to it. With a wood backing the clock dial or face would be thicker and thus would need a longer post.

Clockworks offers multiple post lengths on quartz clock movements for this reason. In other words, the post has to be long enough to go through whatever thickness we are calling the dial.

How to measure quartz clock movement post

What to measure

Clockworks offers multiple post lengths for quartz movements. When completing a quartz clock movement measurement, you will need to measure the post on the old movement.

This is so it can match up with the new quartz movement. To clarify, the post is the part that goes through the dial (face) and mounts from the front and what is in a quartz clock movement measurement.

This applies to all Clockworks quartz movements, including chiming quartz, and time only quartz movements.

Length depends on dial thickness

When working on a quartz clock movement measurement the post has to be long enough to go through whatever thickness that the clock face/dial, might be. The length of the threaded portion of the post/shaft, is the measurement that you need.

The shaft with the threads needs to go through the dial/face of the clock from the back to the front. It needs to be long enough for a small hex nut to screw onto it. It can’t be too long or the hands will not move correctly.

Clockworks has a variety of quartz clock movement lengths to accommodate a variety of different materials since some are wood and some are metal and some are plastic, etc.


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Measuring quartz post lengths

Above all, when replacing a quartz movement it means measuring quartz post lengths. Subsequently, the post will stick out through the front of the clock dial.

Of course, there needs to be enough threads sticking out for the hex nut to be put on. Hence, the movement will be held in place to the back of the dial (clock face) and will not move. Sometimes if the clock has glass over the face it is possible for the post to hit it.

Therefore it is important to measure the quartz post length correctly. In other words, if the post hits the glass, the hands will not be able to move. Thus making the clock not work.

Use the chart if building a clock

With that being said, find the correct quartz post length by using the chart below. So remember, the threads on the post need to be at least 2/16 longer than the thickness of the clock dial.

To clarify, a clock dial is the face (also known as the thing with the numbers on it). As always, email us if there is any question.

Measuring quartz post lengths if replacing a clock

If replacing a movement and not building a clock, it is easier to measure the quartz post length of the old movement.

Before measuring, remove the movement first by taking off the hands and then the hex nut. Next, measure the length of the post that has the threads that the hex nut was on.

In short, only measure the fat part of the hand shaft that we call a post. Also, never include the part that the hands go on when measuring the post length. All in all, the new unit needs to be the same post length as the old movement.

Overall, this applies to all quartz clock movements available on Clockworks such as chiming quartz and time only quartz.

Dial Thickness

  • 1/16 inch thick
  • 3/16 inch thick
  • 5/16 inch thick
  • 9/16 inch thick
  • 3/4 inch thick

Size Post Needed

  • 3/16″
  • 5/16″
  • 7/16″
  • 11/16″
  • 15/16″
How to measure quartz clock movement post


The content of this website is copyright by Clockworks Inc.

No posts could be found that matched the specified criteria.

Heavy Duty Clock Pendulum Drive

This is a Heavy Duty Clock Pendulum Drive battery unit that can swing almost any mechanical clock pendulum. The unit was tested with a 2lb 8oz (1100 grams), 44-inch long metal lyre pendulum with an 8 ½-inch wide bob.

It uses only two C cell batteries and is very strong. The unit is 6 1/4 inches tall (159mm) 3 inches wide (76mm) 2 inches deep (51mm). This item mounts to the back of the clock case.

Moreover, its sole purpose is to swing a pendulum. To run the clock, please purchase one of the movements. Also, please note that the pendulum attaches to a 5/16th (8mm) square hole.

The pendulum top hook must have a single fold over style top hook. If you have a double folded-over hook and find it doesn’t fit, modify the top of the pendulum.

When you have a lyre-style pendulum with a double top hook, you can often just cut it off with metal shears. Then, cut and bend a hook from the pendulum’s metal top so it will fit into this drive.

If using a wood stick-style pendulum with a double top hook, replace the top hook with this one.

Additional information
Weight 0.2 lbs

Frequently bought together

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CHARLES SMITH
CHARLES SMITH
1 year ago

I purchased one of your heavy duty pendulum movements and the chiming clock movement for an Emperor grandfather clock several months ago. The chiming clock movement works great…but I cannot get the HD pendulum movement to work consistently. It appears that the hermle wood stick top hook which is solid at the top does not fit very well with the “pimple” on the swinger pendulum movement. Would replacing the top hook with a slotted top hook like the “Clock Pendulum Top Hook” B1 be a better fit to the HD pendulum movement and correct the problem? Thanks in advance for your assistance.

Rebecca
Rebecca
1 year ago

When I put both C batteries in, the pendulum part shakes. When I put only one battery in it stops shaking (but doesn’t swing as much). Suggestions as to why this is happening and how to fix this?

Richard William Blalock
Richard William Blalock
1 year ago

I have installed the battery powered clock pendulum drive, installing it with the original pendulum which was designed for the clock cabinet. It does not work. Are there any instructions that might be available for instruction? Any thoughts on why it will not work?

Richard William Blalock
Richard William Blalock
1 year ago

Left an earlier message elsewhere. Reinstalled with a larger but lighter weight pendulum and everything works perfectly. Thanks for your follow-up. Great product!

Bill
Bill
1 year ago
Rating :
     

My clock works stopped chiming. Switch is set properly. “Current Chime” rings appropriately, but no houry chime

Paul Gardner
Paul Gardner
1 year ago

Using this pendulum drive, I have a pendulum that is 34″ long with a 6-1/2″ bob at 16.5oz. Will it swing within a 10″ wide cabinet cavity? Also, if I do not have room on the back of the clock face. Can I mount this pendulum drive on the inside of the clock cabinet?

Paul Gardner
Paul Gardner
1 year ago

So what you are saying, is that my 6-1/2″ inch bob will not work with your battery pendulum drive, even though it did work with my old mechanical works in the same 10″ clock cabinet?

John L Hachtel
John L Hachtel
2 years ago

wall clock with a 25 inch pendulum weighing 5.6 oz. Has a 5 1/2 dia Bob. Will the driver shown above be a good choice as a driver?

Dr. Scott Garner
Dr. Scott Garner
2 years ago

I need a powerful pendulum component for my girlfriends grandmother clock. The one that is in it’s moving the pendulum, only an inch each way if that.?

Help please. The other components are fine. This pendulum is killing my OCD!!

Any advice would be awesome!

Thanks!!!

Don Vardeman
Don Vardeman
2 years ago

I am trying to repair an antique clock for a lady I go to church with. I’m having problems because I need battery unit that has a 1 inch set back to be able to swing the pendulum. Will what I have in my cart work and is that all I need? If I could talk on the phone with someone I would appreciate it.

carter yeatman
carter yeatman
2 years ago

How long do the batteries last for the pendulum drive?

Matt
Matt
2 years ago

Does the pendulum start on its own when batteries are inserted? Aka no need to swing it to start?

Gaurab Dey
Gaurab Dey
2 years ago

I have one 8 Days Music Dancer Cuckoo Clock Baroque Design (https://www.cuckooclock.eu/8-Days-Music-Dancer-Cuckoo-Clock-Baroque-Design/8023 Tomah).

This clock breaks down from time to time and sending it for repair everytime is expensive and time consuming.

Can this clock be converted to battery operated but preserving the exterior dial, hands, pendulum and the dancing figures with the actual cuckoo? Can the weights be kept for show? Will the music and the chime work?

Will you help me with a battery model or combination of models that can convert this clock to battery operated?

james
james
2 years ago

can you adjust the speed

Norm
Norm
2 years ago
Rating :
     

Most sites that sells the heavy duty pendulum drive motor made the same as yours states that the weight capacity of the pendulum is 350g does your pendulum drive motor have a different pendulum drive that allows it to carry 1100 g. Pendulum?

Steve Croy
Steve Croy
2 years ago

Is there a particular battery powered movement with chime for a floor clock (grandfather) that would be recommended to go along with this pendulum drive?

Yafi halim
Yafi halim
2 years ago

Will this work with a 12-inch clock pendulum?

David l Humke
2 years ago

Hello! I added 2 ounces of weight, no change. This seems weird – it works fine if the bob is above midpoint on the shaft. Here’s a link to a video of the jitter:
https://photos.app.goo.gl/A4Enkmcjjqi1PKTWA

David l Humke
2 years ago

Update, the pendulum shaft is 41 inches long, and weighs only 4.5 ounces..

David l Humke
2 years ago

Hello! I am building a grandfather clock, and I get serious jitter with this pendulum drive when the pendulum is below the midpoint on the pendulum shaft. It works ok when it is high. Any Ideas?

JOE
JOE
3 years ago

do you have a pendulum for this, 18″long and 4.5 ” dia. disk gold color?

ehasey
ehasey
3 years ago

Will the heavy duty pendulum drive require setting or will it adjust to the size of the cabinet?

Stephen Crawford
Stephen Crawford
2 years ago

Just reading the comments and figured I would chime in and ask if the spacing and placement of magnets could cause this because both have stated they are messing up when the ball is at the bottom wich could be causing the plastic to move in the video it looks like the bottom magnets were closer together then the top also looked to me like one of the to might have also had some slope to it

Dan
Dan
3 years ago

Do you think this would work for a pendulum that weighs about 10 pounds? Thanks.

Dan
Dan
3 years ago

Thanks. Just to confirm, you don’t sell any drives that could accommodate heavier pendulums, right? I’m converting an old grandfather clock, and the pendulum is heavy. Thanks again.

Jared
Jared
3 years ago

Hi, I am having a strange problem. The pendulum stops, then starts again after a day or so. I dont touch it, or change the batteries, it just starts going again. It has been cycling like this for a year or so, every few days it stops, then starts again. The batteries are fuily charged. Any ideas why this is happening or if there is a way to fix it?

Jared
Jared
3 years ago

I noticed the mechanism holding the pendulum can be moved front to back. It was all the way forward, so I pushed it as far back as it would go. The magnets seem to line up better, and perhaps is more level. I haven’t had the issue now for 2 weeks.

Last edited 3 years ago by Jared
Tom Gabourie
Tom Gabourie
3 years ago

So I bought the heavy duty pendulum drive, my bob is 4″ the length with the wooden shaft is 28″ and the case it is swinging in is 8 1/2″. However it hits both sides when everything is leveled perfectly.

Jill
Jill
3 years ago

Is there one product that is a quartz movement and can handle a heavier pendulum?

Jill
Jill
3 years ago

Is this product returnable?

Bob. Abernathy
Bob. Abernathy
3 years ago

Excellent experience with the heavy duty pendulum converting my grandfather clock to battery powered movements. Sharing my experience: when I first mounted the movement it did not work because it would not maintain the swing. I moved the Bob down 4 inches hoping to increase the momentum. That worked and the pendulum has a nice wide swing. Missing the TikTok I placed a small ”Sharp” battery quartz alarm clock behind my clock. It’s quartz TikTok sound aligns perfectly with the swing of the pendulum. The whole combination has given new life to our centuries old grandfather clock!

Bob
Bob
3 years ago

Is this just a pendulum swing unit or is a movement also.? If also a movement, chime or music?

David Wagner
David Wagner
4 years ago

I connected a 6oz, 36-inch pendulum to your Heavy-Duty Pendulum Drive. The pendulum hangs on the drive but the joint is somewhat flexible rather than being a rigid connection. When started, the drive operates at about the same speed as if there were no pendulum and the pendulum wants to move at a much slower speed. How do I correct this? You can see a 5 second video of the problem here: https://www.amazon.com/clouddrive/share/tjBW5YJvTKcEH5ZW2gcnAcJ9QVvoJZ5X3YK1iKXYrYw

David Wagner
David Wagner
4 years ago

Yes, I tried that. Have you seen anything similar to the video that would offer a clue? The pendulum hangs from the drive mechanism and the joint isn’t rigid. I don’t want to start bending the pendulum hanger unless someone with experience thinks the lack of rigidity could be the problem. But, I’ve invested a lot of time making the case so I need to find a solution.

David Wagner
David Wagner
4 years ago

I made a “splint” using a popsicle stick held in place by small diameter wire wrapped around the pendulum and the drive hanger. This made the joint rigid and it’s now been running almost a couple of days. I think the permanent solution will be to crimp the hanger onto the pendulum with vise grips when I get to the final assembly stage of the process.

Connie waldroup
Connie waldroup
4 years ago

Will it carry a 36 inch pendulum.

Jack Hobbs
Jack Hobbs
4 years ago

I need a pendulum drive for a large wall clock. The pendulum is 17.5″ long and weighs 14-7/8 oz (423 grams). Would your Heavy-Duty Clock Pendulum Drive be sufficient for this application?

Joe
Joe
4 years ago

What is the depth of this heavy duty pendulum drive?

Jennifer
Jennifer
4 years ago

Clock doesn’t chime. It’s battery operated , the battery box that runs the pendulum was somewhat rusted an was missing the contact spring that holds the battery in it. No sound at all is coming from it. What do it get to replace that?

Craig Steen
Craig Steen
4 years ago

Yes…I posted a week ago that my heavy duty pendulum drive would continually swing my 7.2 oz. original grandfather clock pendulum….but….after switching the bob to a 2.7 oz bob and the fifth attempt…it has been swinging for over a week…I’m ecstatic….yes, I previously removed the new batteries and checked them with a battery checker, made certain the unit was perpendicular to the floor, jiggled wires (hoping for a bad connection) etc..but it just wouldn’t work until my fifth attempt and has been working ever since…..gremlins? I don’t know, but I am now satisfied with the unit….

Ted Anderson
Ted Anderson
4 years ago

Will this pendulum drive unit work with a shelf clock case about 12-13 in high?

Craig Steen
Craig Steen
4 years ago

I had my post removed….why…..the heavy duty pendulum drive will not swing my 25 inch pendulum rod with a 2.3 oz. bob and brand new “C” batteries….;

Link Lee
Link Lee
4 years ago

When will this item be back in stock?

James Seelye
James Seelye
5 years ago

Can the heavy duty pendulum drive be mounted below the centerline of the dial face in order to shorten the pendulum stick and shorten the bob swing?

James Seelye
James Seelye
5 years ago

Will a 3-1/2″ diameter pendulum bob have adequate swing clearance inside an 8-1/2″ wide case at a 22″ to 24″ swing length?

James Seelye
James Seelye
5 years ago

Will a 3-1/2″ diameter pendulum bob have adequate swing clearance inside an 8-1/2″ wide case?

James Seelye
James Seelye
5 years ago

What is the tip to tip length of an assembled 55CM wood stick pendulum?

James Seelye
James Seelye
5 years ago

What is the tip to tip length of a 55CM wood stick pendulum stick?

steve
steve
5 years ago
Rating :
     

Exactly what i needed

VinceS
VinceS
5 years ago

Just doing my mech to quartz conversion now and came here looking for instructions on how to hook the pendulum onto this drive unit, seems there are none. The hang point is not like the quartz clock module nor my original (which is compatible with the quartz clock but way too heavy). Whilst I will go bend something up, would be nice to have been told how it is supposed to work. With the sales email would have been handy, where the clock instructions also were.

John Keith Confer
John Keith Confer
5 years ago

My pendulum worked about six months with the drive above and then just stopped but shows some effort to move but can’t. Battery replacement didn’t help.

Thomas Rutland
Thomas Rutland
5 years ago

How does it sound?

Yves De Ladurantaye
Yves De Ladurantaye
5 years ago

Most electronic movement have a pendulum swing time lapse too fast. What is the time laps of this pendulum device and is it adjustable ?

Alan
Alan
5 years ago

Does it make a ticking noise?

Tom Graber
Tom Graber
5 years ago

What is the swing range. My pendulum is 35.5” long and has a 4.25” Bob. Thanks ?

Tom Graber
Tom Graber
5 years ago

I enherited an old grandmother clock which I plan to refit with a quartz battery clock works with chime. The pendulum drive will serve to operate a decorative pendulum. My question : The case has a 9 3/4” interior space width. Will this pendulum drive with a 35.5 long pendulum w/ a 4.25 “ Bob diameter work. I don’t want to bump the inside of the case.

Thanks, Tom
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