Mitutoyo Spare Parts
While we stock all the items commonly used for repairs we can't possibly list all of them here. However, a couple of items, particularly those which might be considered "user replaceable" are on the most frequently requested list. See if what you're looking for is here. Mind you, specialty tools may be required to perform any repairs.
For other parts: see page 72
Mitutoyo does not sell parts directly to end users. It will be necessary to place your order through a dealer. You can check the Mitutoyo web site to find distributors nearby.
Be aware of model numbers!
As Mitutoyo gages, calipers and micrometers evolve, the manufacturer adds new suffixes such as -20, -30 or -50 and letters such as "F" and "S". This little detail must not be overlooked when ordering parts. The model number is always printed somewhere on Mitutoyo gages, if not on the dial.
There are some early models (roughly pre-1980) which may have the same model or code number. However, they had unique parts which are no longer available. We can not be held responsible if you attempt to buy parts for these antiques, and they don't fit.
Are you looking to install your own crystal?
Why are we no longer selling individual caliper crystals? Because we find that most users are unable to install them correctly. For that reason, we urge you to purchase a new bezel with the crystal already installed. It is the simplest and most reliable way to replace a damaged crystal. Just check the parts lists below.
If you are experienced: to install a new crystal in your dial calipers you will need a crystal press. These Mitutoyo caliper crystals are slightly oversized. The crystal press will cause them to become dome shaped and this is what keeps the crystals in place, in a groove inside the bezel. For details on crystal insertion and tools required, see page 15.
Some common terminology: (parts for different models may actually look a bit different than those shown in this generic drawing)
No.8 ... movement assembly (consists of the following)
The slider stop is the plastic end piece (shown right). The color of the plastic may be black or grey. It will have two pegs which press-fit into the openings on the beam. Check the part numbers carefully since there are several variations. In some instances, these are made of metal and involve two screws for mounting.
Note: Parts not listed are currently not available from us. For gages labeled "discontinued" only those parts which are listed here are still available from us. We will only be selling Mitutoyo caliper parts until our stock is exhausted.
You may find that reaming the hole with a very fine reamer (0.4 mm to 0.5 mm size reamer should be suitable) is called for (see photo). If you try to tap the hand onto the center pinion otherwise, you may end up breaking or bending the shaft. This is a task better left to pros with proper tools.
You can order miniature reamers on page 31.