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Notes on the Hermle 351 and 350 series

The Hermle 351 and 350 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 120 x 120mm. The 351-8** series is a two spring and one weight cable unit.

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.

  • 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 Clock Movement 351

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.

Hermle Clock Movement 351

Clock Movements

350-020
  • Balance Escapement
  • 33.2mm Hand shaft
  • 5 Hammer Below
  • Spring Driven

$299

Front Side Back Explode

351-020
  • Pendulum Unit
  • 33.2mm Hand shaft
  • Spring Driven
  • The 15cm includes pendulum

$299

Front Side Back Explode

351-021
  • Pendulum Unit
  • 27.6mm Hand shaft
  • 5 Hammer Below
  • Spring Driven

$299

Front Side Back Explode

351-060 15cm

  • 15cm (includes pendulum)
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 5 Hammer Diagonal Back
  • Plate size 120 x 120mm

$299

Front Side Back


351 030
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 5 Hammer Side
  • Plate size 120 x 120mm

$299

Front Side Back Explode

351-031
  • Pendulum Unit
  • 27.6mm Hand shaft
  • 5 Hammer Side
  • Westminster Chime

$299

Front Side Back Explode

351-050
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 8 Hammer Back
  • Spring Driven

$299

Front Side Back

351-051
  • Pendulum Unit
  • 27.6mm Hand shaft
  • 8 Hammer Back
  • Spring Driven

$319

Front Side Back


351-830
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 5 Hammer Side
  • 2 Springs, 1 Weight

$339

Front Side Back

351-850
  • Pendulum Unit
  • 33.2mm Hand shaft
  • 8 Hammer Back
  • 2 Springs, 1 Weight

$339

Front Side Back Explode

350-060

  • Balance Escapement
  • 33.2mm Hand shaft
  • 5 Hammer Diagonal Back
  • Plate size 120 x 120mm

$319

Front Side Back Explode

Hands for the 350 / 351 Series

Clock Hands 351 / 350 Serpentine Hands

Most popular choice are these Serpentine hands for the 351 /350 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 351 / 350 Spade Hands

Spade hands for the Hermle 351 / 350 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 351 /350 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 351 / 350 Maltese Hands

Maltese style clock hands for the Hermle 351 / 350 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 for the 350 / 351 Series

Hermle Clock 1161 Suspension Spring 351 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 8 351 / 350 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


Clock wood stick pendulum Wood Stick Pendulum for 351

Wood stick pendulum with polished brass bob for the hermle 351 clock movement series. On the back of the clock movement will be the CM stamp. This is not the actual length of the pendulum itself, rather this CM represents the pendulum and leader and suspension all in one measurement where the clock will keep time. All that needs to be done is order the cm length as stamped on the movement, and the pendulum will be the proper length. The bob is the round disk at the bottom of the pendulum and should have about 2 inches on each side to swing around.

#StPend351

Dating Hermle clock movements

Prior to 1988, the year was two digits (79 was produced in 1979).
Starting in 1988 the year of was indicated by a letter.

  • A/1988
  • B/1989
  • C/1990
  • D/1991
  • E/1992
  • F/1993
  • G/1994
  • H/1995
  • J/1997
  • K/1998
  • L/1999
  • M/2000
  • N/2001
  • O/2002
  • P/2003
  • Q/2004
  • R/2005
  • S/2006
  • T/2007
  • U/2008
  • V/2009
  • W/2010
  • X/2011
  • Y/2012
  • Z/2013
  • AA/2014

HERMLE MOVEMENT DIRECTORY

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