Features

Constrain Ø1/2" Post Height
Slips On to Side of Post
Setscrew Offers Fine Height Adjustment

Our slip-on collars attach to Ø1/2" posts and, when used with a post holder, restrict the height adjustment of the post. These collars are ideally used when swapping post-mounted components such as lenses so that the lens' height will be aligned to the optical axis of your system. Additionally, when used with our anti-rotation adapter, the rotational alignment of a post can be restrained for maximum repeatability.

Please Give Us Your Feedback

Email		Feedback On
(Optional)
Contact Me:
Your email address will NOT be displayed.

Please type the following key into the field to submit this form:

Click Here if you can not read the security code.
This code is to prevent automated spamming of our site
Thank you for your understanding.

Would this product be useful to you? Little Use 1 2 3 4Very Useful

Enter Comments Below:

Characters remaining 8000

Posted Comments:

Poster: cdaly

Posted Date: 2013-03-06 10:40:00.0

Response from Chris at Thorlabs: Thank you for using our web feedback. While this is a point at which the R2 can in fact break, this is under far more stress than the product is intended for. The collar should be sufficiently tight with a quarter turn of a hex key past hand tight. The setscrew is used for initial final positioning. Once the correct height is achieved, the post holder should be used to secure the height of the post. Once this is tight, the set screw can be retracted and the collar readjusted so a repeatable height can occur if the post is removed and reinserted into the post holder. However, if greater torque is required without the small screw, I would recommend that you consider the R2T. It is thinner profile, but has no setscrew and can handle much more toque. You'll need to use a ball driver or hex key to tighten this down as it uses an 8-32 set screw to clamp to the post, rather than the 1/4-20 thumbscrew in the R2.

Poster: Thorlabs

Posted Date: 2011-01-19 09:33:18.0

Response from Javier at Thorlabs to graum: Thank you very much for your feedback. We actually offer a few other components that are designed for mounting 1/2" posts parallel to the optical table and, at the same time, are attached to perpendicularly mounted posts. Please visit the following link: http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1985

Poster: graum

Posted Date: 2011-01-18 14:03:49.0

I use a lot of R2 post collars with my 1/2" posts in lab. One thing Ive found useful is to give them an additional 4-40 tap. With this I can screw on a 1/2" post to the side, and then use this post-collar assembly to mount a post parallel to my table off of a post already mounted perpendicular to the table. I think this would be a useful addition to anyone who wants to use these posts. It would certainly increase their value to my lab.

Click on any phrase below to search our site using our new Search Engine:

1/2" post collar collar height accessory height adapter metric post accessory post adapter post collar post height thin 1/2" post collar thin collar thin post collar

View All »Matching Part Numbers

Slip-On Ø1/2" Post Collar

Features