Notes on the Hermle 451 Series

The Hermle 451 series clock movement is a chain driven, three weight, Westminster chime unit. This clock movement has square outer movement plates that are 120 x 120mm.

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 new chains, also 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

Selecting the correct 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.

451-050 Movement

• 75, 85, 94, 114CM
• 33.2mm Hand shaft
• 8 Hammer Back
• $299

Front Side Back

451-053 Movement

• 75, 85, 94, 114CM
• 53.2mm Hand shaft
• 8 Hammer Back
• $299

Front Side Back

451-030 Movement

• 66, 94, 114CM
• 33.2mm Hand shaft
• 5 Hammer Side
• $299

Front Side Back

• 94, 114CM
• 53.2mm Hand shaft
• 5 Hammer Side
• $299

Front Side Back

Most popular choice are these Serpentine hands for the 451 Hermle Clock Movement for either a 8 inch or 10 inch 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.

#CH3

Not as common on the 451 are these Spade hands. 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.

Never seen these used on the 451, but there are some crazy clock ideas out there so here they are. Regulator style hands that come in 5 and 7 inch dial diameters (very small for 451). 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.

#CH2

Proper suspension spring for all of the 451 hermle clock movement series. The larger suspension spring is 1 inch long and 7/16 inch wide for the clocks with a 8 1/2 inch or 10 1/2 in bob (round disk at the bottom of the pendulum). The smaller size is for the clocks with a 6 1/2 inch or less pendulum bob. You see if the larger suspension is used with a small bob, it may have trouble running. If the smaller spring is used with the larger bob diameters, the pendulum will wobble and the spring could break also. If ordering a new 451 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 #451SUS

The chain fits the 451 series clock movement. It has 46.5 links in a foot and comes in a 6 foot length. The chain comes in either the shiny polished brass style or the darker antiqued brass style. If ordering a new chain driven 451 movement, keep in mind a new movement will come with the chains already included.

Item #WE4

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

11 x 15 1/2 phase of the moon dial with Arabic gold time track and raised spandrels. The four dial feet on the back of the Moon Dial mount into the movement itself. Has the silent / chime option at 3 O'clock. This dial fits the 451-050 movement.

Item #MD8 $89

11 x 15 1/2 phase of the moon dials with a silver time track and raised spandrels. The four dial feet on the back of the dial mount into the movement itself. Has the silent / chime option at 3 O'clock and has Arabic numerals.

Item #MD1 $125

11 x 15 1/2 phase of the moon dial with Arabic gold time track and raised spandrels. The four dial feet on the back of the Moon Dial mount into the movement itself. Has the silent / chime option at 3 O'clock. This dial fits the 451-053 movement.

Item #MD16 $125.

9 7/8 x 13inch phase of the Moon Dials with Arabic gold time track and raised spandrels. The four dial feet on the back of the dial mount into the movement itself. Has the silent / chime option at 3 O'clock.

Item #MD6 $89