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⇓ Scroll Down for How To Install and Clocks Troubleshooting Tips ⇓

How to Choose the Correct Size Clock Movements and Clock Hands, or the Correct Size Clock Inserts

Clock Inserts - New & Replacements - Your Key Measurements

Clock inserts and fit-ups in 37mm | Bear Woods SupplyA 3-1/2" Clock Insert has a 3-1/2 inch Outside Diameter (#2 in the picture to the left) and the hole size (#1 in picture to the left) it goes into can vary by size, but will be less than 3-1/2 inches.  So click on a model you like and look for the Mounting Hole Diameter Measurement.  So if you are making a new clock or repairing an old one, how big do you want the clock face to be?  Shop the pages of clock inserts based on how big you want the clock face to be.
And how big is the mounting hole be? Or how big is the hole your insert will go into? Click on a clock insert to see the mounting hole size. 
Clock inserts size instructions links
how to choose clock inserts

Clock Mechanisms and Hands - Key Measurements

3 Things You Need to Know & Measure - 1) Thickness of your Clock Face/Dial Material.  2) Length of your Clock Hands. 3) Type of Clock Movements.

how to choose clock Movements and hands

choosing the right clock motor

Here's what you need to know for choosing new or replacement clock parts: 

1) The Thickness of your Clock Face - you just need a measurement of the material the clock shaft has to go through.  What is the measurement A in Figure 2 above?  Or in Figure 1, how thick is that piece of wood that's ready for a clock motor? 

Our clock movements are listed by type (see categories below) and then by length of the clock shaft - specifically telling you how much material the shaft can go through.  For example, or Q-64, the best-selling high torque movement, will go through 5/8" thick material.  Its overall threaded shaft length is 11/16", which allows room for the mounting washer and nut.  The overall shaft is then 1-1/8".  Details can be found on the product pages.  Choose a type of clock from below, and then click on a product to see specific measurements.

The longest shaft we have is our Q-16 which goes through 3/4" thick clock face material.

2) Our clock hands are measured as in Figure 4 from the the Mounting Hole to the end of the Minute Hand.   (In Figure 4 you can see the overall length of the hands pictured is longer)

3) Choose clock hands based on the size of your clock dial.  In Figure 3 this clock is a 24" clock and the designer chose 10" Clock Hands - generally you want your clock hands to sit somewhere between the inside and outside edge of your numbers or numerals.  So a little less than half the diameter of your clock face is standard.  

PRO TIPS: - Sometimes you will have to remove some material with a chisel or router or other tool to inset your clock movement.  OR if you want to bring your hands closer to your clock face, add some material between the movement plastic case and the back of your clock face (like a thin piece of wood)

4) What type of Clock Movement? Scroll Down to See Pictures of Clock Motors - Click on a picture to see the options once you have the measurements from step 1 to 3 above.  Or use this table to quickly jump and see the options.

Clock Mechanisms are in 2 Power Categories - Standard for hands up to 4-7/8" and High Torque for hands 5" up to 18".  

A)  Standard Step Motion 
B)  Upgrade to Continuous Sweep
C)  Add a Pendulum or Chime (or Both)

Note: All movements except High Torque come with free hanging brackets.  For many designs our Picture Hanging Hardware (click here for details) will be a great option for hanging your clocks.

  • Mounting hardware always includes a mounting nut, mounting washer and a hanging bracket if specified, plus a nut or cap to hold your hands on - read on please for specifics.
  • High Torque Movements include an End Cap in a brass color.  You can purchase a black end cap separately.  You can also purchase an open end nut separately.
  • Standard (AKA Mini) movements include a hanging bracket, mounting nut, washer, and an open second hand nut.  You can purchase a black or brass end cap separately if you are not going to use a second hand.  Our free hands typically include a set with hour and minute and second hands, but read product info for details please.  Second hands are sold separately with premium hands. 

Shop by type of clock part below.  And scroll down for How To and Troubleshooting Info