Clock Inserts

Hermle Clock Movement 350/351MVT NotesHermle Identification

Please view these information tabs to learn more about the 351-020 and other Hermle Clock Movement 350/351 units

Hermle clock 351 - 350 movement

Hermle clock 351 - 350 movement is a popular movement for the bracket style shelf mantle clock. Its basically the same clock movement as the 341 series except the plate size is 20mm bigger. Such as the 341-020 compared to the 351-020. Or the 340-020 compared to the 350-020 are the same unit, but the plate size. The 351 and 350 has larger outer plates overall. However they are not cross compatible because the winding arbors are not quite the same. So the dial on one will not fit a the other movement.

The movement

The 351 - 350 movement Hermle clock series has Westminster chime and with a 120mm square outer plate size. It comes in a pendulum version such as the 351-020 or the non pendulum balance wheel version like the 350-020. The balance kind just has a balance wheel more like a watch on the top of the movement that acts as the escapement.

This is beneficial in that it cant be out of beat and its fine to be off level. Also to move from here to there with no reset up of the clock. All of these Hermle clock 351 - 350 movements take a key size 8 to wind them up and the run time is 8 days in a single wind. These units are all spring driven with the exception being the 351-830 and 351-850. Those units are special as they have two springs and one weight for the center. Often the center weight will be split into two weights on a yoke.

The hammers

The hammer locations are variable on this series. The 5 hammer bottom strike 351-020 pendulum, or 350-020 balance units are the most used, the movement does not take much depth and so it can be put into a shallow clock case no problem. Same with the side strike 5 hammer units like the 351-030, it fits into a shallow depth well. Other hammer locations are the back 4 on one side and 4 on the other like the 351-050 unit. Then lastly as in the 351-060 unit you can have 5 hammers diagonally on the back instead.

The chime

This is a Westminster chime unit. What this means is it will play Westminster progressively as it runs through the quarter hours. On the top of the hour we get to celebrate with the entire song and then it will strike out whatever hour it is.

Placing an order

The movement come as the movement itself with its hand nut, comes with the suspension spring and leader if its the pendulum style Hermle clock 351 - 350 movement. The movement will come already oiled and ready to go. It will come with instructions by email, if you get stuck you can just ask us to help if you have issues beyond the instructions. This family has been working on clocks for literally 100 years, if you have a question, just ask us! And it does not matter if the clock movement is out of warranty either, even years after it does not matter. The factory warranty on this unit is 3 years.

  • 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 351

- - The content of this web page and web site was written and copyright by James Stoudenmire of Clockworks.com - It may not be used commercially without permission. - -

Hermle Clock Movement Identification

Hermle Clock Movement Identification is done with the numbers off of the clock movement itself, right off the brass. Not off the paperwork or manuals that came with the clock, not off the wood case. On the back plate of the clock movement you will see the numbers such as 451-050 94cm. These numbers let us know everything we need to know about the mechanical clock movement itself. This tells us if the clock is weight driven or spring driven, if it has a pendulum, the size of the movement and the length of the hand shaft and much more.

To match up the numbers to the new movement numbers is to get the exact same movement you have now but brand new. Since the new movement will be the exact same and not some knock off imitation, all of your existing clock components will fit just the same as they did on the old unit.

As discussed in a different section, the new movement is the way to go without a doubt. The new unit is a fraction of the price of an overhaul on the old one. You will have the clock back and running in the shortest time instead of waiting months and sometimes years for the overhaul to be completed. The movement will last another 30 years without much complaint, you cant say this about an old one that was restored.

- - The content of this web page and web site was written and copyright by James Stoudenmire of Clockworks.com - It may not be used commercially without permission. - -

The first step when ordering a clock insert is to measure how wide the hole is that the clock insert is supposed to go into. Once you have this information you can view the clock inserts below and get one that will fit into the hole. If the clock insert is too loose when you get it, you can put a rubber band around the back of the unit to fill up the space some. No one will see the rubber band and it makes the clock inserts fit tighter.
When selecting the correct clock inserts you will need to choose the dial face color and then also Arabic or Roman numbers. Roman numbers are the kind where 12 will be displayed as XII and Arabic would be displayed as 12. The inserts are categorized from smallest on the top of the page, and larger as you scroll down the page.

Insert #F1A = 1 5/16" (33mm)

  • Best quality
  • Includes battery
  • glass crystal
  • Stainless back
  • 3 year guarantee
Minimum units Price/unit
1 $10.89
5 $9.89
12 $8.89
50 $7.89
Clear
F1A: $10.89

Insert #F1 = 1 7/16" (36mm)

  • Best quality
  • Includes battery
  • glass crystal
  • Stainless back
  • 3 year guarantee
Minimum units Price/unit
1 $14.89
5 $13.89
12 $12.89
50 $11.89
Clear
F1: $14.89

Insert #F2 = 1 13/16" (45mm)

  • Best quality
  • Includes battery
  • glass crystal
  • Stainless back
  • 3 year guarantee
Minimum units Price/unit
1 $12.89
5 $11.89
12 $10.89
50 $9.89
Clear
F2: $12.89

Insert #F3 = 2 1/4" (59mm)

  • White Dial Arabic or Roman
  • Curved lens
  • Includes 1 N battery
  • 3 year guarantee
Minimum units Price/unit
1 $11.89
5 $10.89
12 $9.89
50 $8.89
Clear
F3: $11.89

Insert #F4 = 2 3/4" (73mm)

  • Takes 1 AAA battery
  • Fits into a 2 3/8 hole
  • 3 year guarantee
Minimum units Price/unit
1 $14.89
5 $13.89
12 $12.89
50 $11.89
Clear
F4: $14.89
<

Insert #F7 = 3 1/2" (90mm)

  • 3 year guarantee
  • Takes 1 AA battery
  • Fits a 3" hole
Minimum units Price/unit
1 $14.89
5 $13.89
12 $12.89
50 $11.89
Clear
F7: $14.89