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Compact Kinematic Mounts


  • Hardened Steel Inserts Reduce Wear
  • Brass Sleeves for Smooth Adjustment
  • 100 TPI Precision Adjusters

Hex Head
Adjuster

KMSS

KMS

Removable Knobs
for Tamper Resistance

KMS

Post
Not Included

MH25T

Ø1" Mirror Holder

KMS with MH25
Ø1" Mirror Holder

Application Idea

Related Items


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KMS and MH25 Application
Click to Enlarge

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

Features

  • Compact Profile is Ideal for Space Constrained Applications
  • Hardened Steel Inserts at Kinematic Contact Points to Reduce Wear
  • Tapped Holes for Vertical or Horizontal Post Mounting
  • Adapters for Mounting Ø1/2" or Ø1" Optics
  • Versions Available With or Without Knurled Knobs

The KMS(/M) and 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 removing the adjuster knobs and shortening the adjuster screws to their minimum length. Therefore, a 5/64" hex key is required for adjustments to the KMSS mount.

Both mounts offer an angular displacement range of ±4° with an adjustment per revolution of 15 mrad/rev. They feature two 8-32 (M4) threaded holes on the bottom and back of the mount for vertical or horizontal Ø1/2" post mounting. A 4-40 tapped hole is also included on the front of the mount for attaching our MH12, MH25, and MH25T Mirror Holders (sold below). Both mounts are fabricated from black anodized aluminum.

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:bernd.steffen
Posted Date:2016-03-24 11:01:59.897
Can you add a 4-40 thread right in the axis of the ball joint to make the mount "gimbal" (without glue, as I do it now...)? And do you also have a "left handed" version?
Poster:besembeson
Posted Date:2016-03-24 03:09:36.0
Response from Bweh at Thorlabs USA: We don't have a left handed version at this time but we will review this option. I will contact you about your application and the gimbal construct.
Poster:
Posted Date:2015-01-22 16:29:40.76
Hi, I agree with the other people below. The upper mounting hole of KMS/M and KMSS/M should be M4 (or at least M3), not 4-40. There's no screw adapter available for male 4-40 to M4 (or M3), which makes this product hard to use.
Poster:cdaly
Posted Date:2015-01-22 04:09:32.0
Response from Chris at Thorlabs: The #4-40 threaded hole is to provide compatibility with the existing optic holders such as MH12, MH25, and MH25T. We will discuss internally the possibility of making the change to an metric threaded hole, but this would require a new version of each of these items as well.
Poster:adam.wyatt
Posted Date:2014-05-07 10:05:20.22
Is it possible to supply the KMSS/M (and similar mounts) with M4 tapped holes on the centre of the front plate, instead of the 4-40 UNC threaded hole already there.
Poster:jlow
Posted Date:2014-05-07 11:27:49.0
Response from Jeremy at Thorlabs: We can do this. We will contact you directly regarding the quote.
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.

Compact Kinematic Mirror Mount with Removable Knobs

Compact Kinematic Mount
Click for Details

KMS Mechanical Drawing
  • Compact Profile: 1.00" x 1.13" x 1.30" (25.4 mm x 28.7 mm x 33.0 mm)
  • Angular Range: ±4°
  • Removable Knobs for Smooth, Long-Term Operation
  • Two 8-32 (M4) Tapped Holes for Vertical or Horizontal Post Mounting
    (See Mechanical Drawing)
  • 4-40 Tapped Hole on Front Plate for Attachment of Mirror Holder
    (See Mechanical Drawing)

The KMS(/M) is a two-adjuster mirror mount with a compact design that occupies a 1.00" x 1.13" x 1.30" (25.4 mm x 28.7 mm x 33.0 mm) volume. The adjusters have removable knobs and are housed in bronze bushings to ensure smooth, long-term operation. In addition, the hex head on the adjusters allows a HKTS-5/64 hex key knob or 5/64" hex key to be used to make adjustments even when the knobs are removed.

The angular displacement range of the mirror face is ±4° with an adjustment per revolution of 15 mrad/rev. This mount has two 8-32 (M4) threaded holes that enable horizontal or vertical Ø1/2" post mounting. A 4-40 tapped hole on the front face plate of the mount allows our MH12, MH25, and MH25T Mirror Holders (available below) to be attached.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
KMS Support Documentation
KMSCompact Kinematic Mirror Mount, 8-32 Taps for Post Mounting
$37.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
KMS/M Support Documentation
KMS/MCompact Kinematic Mirror Mount, M4 Taps for Post Mounting
$37.00
Today

Low-Profile Compact Kinematic Mirror Mount

Compact Kinematic Mount
Click for Details

KMSS Mechanical Drawing
  • Compact Profile: 1.00" x 1.13" x 0.79" (25.4 mm x 28.7 mm x 20.1 mm)
  • Angular Range: ±4°
  • Shortened Adjuster Screws for Reduced Footprint
  • Two 8-32 (M4) Tapped Holes for Vertical or Horizontal Post Mounting
    (See Mechanical Drawing)
  • 4-40 Tapped Hole on Front Plate for Attachment of Mirror Holder
    (See Mechanical Drawing)

The adjusters of the KMSS(/M) mirror mount have been shortened to their minimum possible length in order to reduce the overall volume to 1.00" x 1.13" x 0.79" (25.4 mm x 28.7 mm x 20.1 mm). The length of the adjuster makes attaching a knob to the adjuster impossible, so a HKTS-5/64 hex key knob or 5/64" hex key must be used to adjust the mirror mount.

The angular displacement range of the mirror face is ±4° with an adjustment per revolution of 15 mrad/rev. This mount has two 8-32 (M4) threaded holes that enable horizontal or vertical mounting. A 4-40 tapped hole on the front face plate of the mount allows our MH12, MH25, and MH25T Mirror Holders (available below) to be attached.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
KMSS Support Documentation
KMSSCustomer Inspired!Compact Kinematic Mirror Mount, Hex Adjuster, 8-32 Taps for Post Mounting
$35.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
KMSS/M Support Documentation
KMSS/MCustomer Inspired!Compact Kinematic Mirror Mount, Hex Adjuster, M4 Taps for Post Mounting
$35.00
Today

Ø1/2" Mirror Holder

MH12 and KMS with Mirror
Click to Enlarge
MH12 with KMS and Ø1/2" Mirror
KMS with MH12 Mirror Mount Adapter

The MH12 Mirror Holder can be used to mount Ø1/2" (12 mm) mirrors. The optic slides into a double-bored hole and is held in place with a nylon-tipped setscrew that can accommodate mirrors that are at least 0.10" (2.5 mm) thick. On the back of the MH12 is a 4-40 threaded boss that screws into the front plate of the KMS(/M) and KMSS(/M) mounts.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
MH12 Support Documentation
MH12Mirror Holder for Ø1/2" Optics
$15.50
Today

Ø1" Mirror Holders

MH25 and KMS with Mirror
Click to Enlarge
MH25T with KMS and Ø1" Mirror
MH25 Mechanical Drawing

The MH25 and MH25T Mirror Holders are two-piece adapters that allow Ø1" mirrors to be mounted to the front plate of the Compact Kinematic Mounts featured on this page. The holder features a 4-40 threaded boss that screws into the faceplate of the KMS(/M) or KMSS(/M) and comes with a retainer to secure the optic’s position within the holder. 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.

Item #Min. Optic ThicknessMax Optic Thickness
MH252.5 mm (0.10")6.1 mm (0.24")
MH25T6.0 mm (0.23")10.0 mm (0.39")
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
MH25 Support Documentation
MH25Mirror Holder for Ø1" Optics 2.5 - 6.1 mm Thick
$14.70
Today
MH25T Support Documentation
MH25TCustomer Inspired!Mirror Holder for Ø1" Optics 6.0 - 10.0 mm Thick
$19.90
Today
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