Thorlabs - Compact Kinematic Mounts

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Mirrors can be Mounted to the KMS or KMSS using the MH12, MH25, or MH25T Mounting Adapters (Sold Below).

Compact Mirror Mounts
The KMS (KMS/M) and KMSS (KMSS/M) mounts are compact, general-purpose, two-adjuster kinematic mirror mounts. The adjustment screws on the KMS have a 5/64" hex socket, which can be accessed through the removable knobs. The slimmer design of the KMSS results from the fact that the adjuster screws have been shortened to their minimum length. A 5/64" hex key is required to adjust the KMSS mount. Both mounts offer an angular displacement range of ±4° with an adjustment per revolution of 15 mrad/rev and feature 8-32 (M4) threaded holes on the bottom and back of the mount for vertical or horizontal mounting.

Mirror Holders
The front plate on each of our compact mirror mounts is equipped with a 4-40 mounting hole that directly accepts either the Ø1/2" mirror holder (MH12) or the Ø1" mirror holders (MH25 or MH25T). The MH12 has a nylon-tipped setscrew that can accommodate Ø1/2" mirrors that are at least 0.10" (2.5 mm) thick. The MH25 and MH25T are two-piece adapters that mount Ø1" mirrors using an internally threaded retainer. The MH25 mounts mirrors from 2.5 mm (0.10") to 6.1 mm (0.24") thick, while the MH25T mounts mirrors from 6.0 mm (0.23") to 10.0 mm (0.39") thick.

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Posted Comments:

Poster: hambitza

Posted Date: 2013-05-05 06:15:15.187

I am searching for the resolution for the KMS/M mount in mrad per revolution. On its catalog page 249 there is the resolution only for other components from the KM... series given.

Poster: cdaly

Posted Date: 2013-05-06 11:04:00.0

Response from Chris at Thorlabs: Thank you for using our feedback tool. Both the KMS and KMS/M use 3/16"-100 adjusters, which results in a resolution of 14.7 mrad/revolution at the nominal position.

Poster: klee

Posted Date: 2009-10-15 10:28:33.0

A response from Ken at Thorlabs to weronika.zaperty: The #4-40 thread has a 0.112" (2.8448mm) diameter and 40 TPI (threads per inch), which translate to a 0.635mm thread pitch. McMaster Carr has numerous #4-40 screws available.

Poster: weronika.zaperty

Posted Date: 2009-10-15 08:12:27.0

Hi:) i have a question about thread of KMS/M element - at the documentation there is written #4-40 - how it can be describe in metric units? where can I buy such threads? best regards, Weronika Zaperty

Poster: klee

Posted Date: 2009-08-26 11:11:55.0

A response from Ken at Thorlabs to bmcpherson: We can make the KMSS with F19SS038 screws as a special. Please let us know the quantity and we can send you a quote.

Poster: whyemail

Posted Date: 2009-08-25 21:57:25.0

Seem silly to require an email just to input a comment.

Poster: bmcpherson

Posted Date: 2009-08-19 19:05:55.0

We used to buy this part with a shorter adjuster. I dont have any left but the adjuster would fit flush to the body. If I had to guess the old ones were 3/8" length but I am not entirely certain. An option for shorter adjuster screws to make the space occupied even smaller would be really nice.

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