CRD-XA 60mm Cage-Style Self-Centering Mount

Product Description

• Self-centering spring clamping design.
• Can clamp and mount optical components with diameters of Ø3.8-Ø45.0mm.
• Compatible with 60mm cage systems.
• Features a large clear aperture.
• M4 screw holes, compatible with Oeabt series rods.

The three spring-loaded clamping arms of the CRD-XA can hold optical components with diameters of Ø3.8-Ø45mm, making it ideal for universal mounting of non-standard size optical components.

Model	CRD-XA
Dimensions	76.2*76.2*12.1mm (excluding clamping arms)
Clamping Diameter	Ø3.8-Ø45mm
Through Hole Spacing	Ø6.02mm, spacing 60*60mm
Screw Hole Type	M4 screw holes
Weight	116.3g
Material	7075 aluminum alloy

Easy to integrate into our 60mm cage system. The sides of the cage rod through holes are equipped with set screws for fixing the position of the mount in the cage system.

Technical Description

Optical Knowledge Point: Common Optical Thread Size Standards

This is a thread specific to Thorlabs Inc. (USA) and not a commonly used optical thread. “SM” is the code for sewing machine threads in thread notation, but this American company uses it for internal and external thread connections of optical lenses and sleeves. The thread type is UNS (Unified National Special Thread) with a tolerance class of 2A/2B. A unique feature of this thread is that regardless of the diameter, the pitch is 40 threads per inch (TPI). Specific dimensions are as follows:

Series	Type	Thread (in)	Nominal Diameter (mm)	Minor Diameter (mm)	Pitch Diameter (mm)	Major Diameter (mm)
SM05	Internal	0.535-40	13.59	12.98±0.07	13.24±0.05	＞13.59
SM05	External	0.535-40	13.59	＜12.78	13.10±0.05	13.50±0.05
SM1	Internal	1.535-40	26.29	25.68±0.07	25.95±0.05	＞26.29
SM1	External	1.535-40	26.29	＜25.48	25.79±0.05	26.19±0.06
SM2	Internal	2.535-40	51.69	51.08±0.075	51.35±0.075	＞51.69
SM2	External	2.535-40	51.69	＜50.87	51.18±0.05	51.59±0.05

Product Description

The three spring-loaded clamping arms of the CRD-XA can hold optical components with diameters of Ø3.8-Ø45mm, making it ideal for universal mounting of non-standard size optical components. The lens holder clamping arms can be easily opened by operating the side handles with the index finger and thumb. When the handles are released, the lens is clamped by the fixed arms, and the nested ring-shaped cam centers the optical component simultaneously.

The mount is equipped with four through holes, compatible with Ø6mm cage support rods, facilitating integration into our 60mm cage system. The sides of the cage rod through holes are equipped with set screws for fixing the position of the mount in the cage system.

The bottom is provided with one M4 screw hole, allowing the mount to be directly installed on our Ø12mm rods.

Assembly

Application Example

Engineering Drawing Download

CRD-XA-Engineering Drawing