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Notes on the Hermle 340 / 341 series

The Hermle 341 and 340 series is a spring driven westminster chime unit that takes a size #8 key. This is a square shaped movement with the movement plate size of 100 x 100mm. What is being offered on this page is the movement only with out the pendulum, gong or dial. These movement come as the movement itself with its hand nut and if a pendulum unit, comes with the suspension spring and leader.

Timing a balance clock movement

There are two balance movement styles produced by Hermle. The old style and then the new style.Read More »

Old Style The old style is one with a round spring that goes up and down (Vertical) in a circle around the center arbor of the balance wheel. In this style there is a slide arm with a tiny weight on the balance wheel itself. There is a + and - on the wheel. To speed up time go towards the plus sign. However this style is not always easy to regulate and can be very hard to get it perfect. The factory has special devices to make it perfect however it’s not that easy on the customer end with this style balance and this is why it has been improved upon. If you have the old style balance then your clock movement has some age to it and you may want to replace the unit anyway. We have the movement brand new with the new style balance for less than the cost of a cleaning on your old unit. Figure your clock movement has lasted you 25 years or so then in theory the new unit should last more than this with the improved aspects.

New StyleThe units offered on this page all have the new and improved balance assemblies. Despite the change on the balance, these units are a direct fit and will install in the clock case the exact same way as the old unit. If the numbers match from the old unit to the numbers offered on this page, than the movement will be the exact same as it is now but brand new and with the improved balance. The improved upon balance units have a different kind of hairspring (Horizontal) and a screw to regulate it rather than a slider arm. The regulator screw is on the back of the movement near the balance and has a + and - sign next to it. If the clock needs to be faster to keep time then the screw would be turned to the plus and opposite for slowing time.

  • Less cost than a cleaning in most cases
  • Should last 25-30 years, a repair would not
  • Easy to install, we can help if needed
  • Ships same day as order

Hermle clock movement exploded view

Hermle 341 Series

Selecting the movement

The numbers on the back plate of the movement is everything one needs to get a replacement.

If the numbers match then the movement matches.

If the clock is a pendulum unit, be sure to select the proper CM length that matches the old unit.

Clock Movements

340-020 340 / 341series Hermle clock movements
  • Balance Escapement
  • 33.2mm Hand shaft
  • 5 Hammer Below
  • Spring Driven

$239

Front Side Back

341-020 340 / 341series Hermle clock movements
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 5 Hammer Below
  • Plate size 100 x 100mm

$249

Front Side Back

340-020K 340 / 341series Hermle clock movements
  • Balance Escapement
  • 33.2mm Hand shaft
  • 5 Hammer Below
  • Calendar Movement

$319

Front Side Back


341-021 340 / 341series Hermle clock movements
  • Pendulum Unit
  • 27.6mm Hand shaft
  • 5 Hammer Below
  • Plate size 100 x 100mm

$249

Front Side Back

341-020K 45cm 340 / 341series Hermle clock movements
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 5 Hammer Below
  • Calendar Movement

$289

Front Side Back

341 Parts -Front Diagram Hermle Clock Parts 341 front diagram 341 Front Diagram
341 Parts -Back Diagram Hermle Clock Parts 341 back diagram 341 Back Diagram

Hands for 341 / 340 Series

Clock Hands 341 / 340 Serpentine Hands

Most popular choice are these Serpentine hands for the 341 / 340 Hermle Clock Movement. The dial diameter is also called the time track, it is the ring from outside the 9 to outside the 3 . The minute hand has a 2.8mm square mounting hole that is in a round bushing that rotates with in the hand, the hour hand has a 4.5mm round hole.

Item #CH3

Clock Hands 341 / 340 Spade Hands

Spade hands for the Hermle 341 / 340 Hermle clock movement. The dial diameter is also called the time track, it is the ring from outside the 9 to outside the 3 . The minute hand has a 2.8mm square mounting hole that is in a round bushing that rotates with in the hand, the hour hand has a 4.5mm round hole.

Item #CH1

Clock Hands 341 / 340 Regulator Hands

Regulator style hands that come in 5 and 7 inch dial diameters. The dial diameter is also called the time track, it is the ring from outside the 9 to outside the 3. The minute hand has a 2.8mm square mounting hole that is in a round bushing that rotates with in the hand, the hour hand has a 4.5mm round hole.

Item #CH2

Clock Hands 341 / 340 Maltese Hands

Maltese style clock hands for the Hermle 341 / 340 movement series. This style only comes sized for a 5" Dial diameter. The dial diameter is also called the time track, it is the ring from outside the 9 to outside the 3. The minute hand has a 2.8mm square mounting hole that is in a round bushing that rotates with in the hand, the hour hand has a 4.5mm round hole

#CH12 - $14

Accessories

Hermle Clock 1161 Suspension Spring 341 Pendulum Suspension Spring

Proper suspension spring for all of this Hermle clock movement series. If ordering a new movement, keep in mind a new movement will come with the suspension already included. It sure is a good idea to have a spare also if you choose to get this and put it on the bottom of the clock case for next time. There will be a next time, there always is when it comes to suspensions, this would make a nice spare instead of searching endlessly in the future for it.

Item #SUSA2

Hermle Clock Key Size 8 341 Key Size #8

This is the correct size key for the this Hermle movement series. These units are 8 day movements, so you wind once per week.

Item #KEY8

Clock Parts German Hand Nuts German Hand Nuts

12 Assorted hand nuts for German movements. With this assortment of hand nuts you will get one for your German movement with no problem.

Item #CP9 $10


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