CRD-25 30mm Cage Rotation Mount

Product Description

• 360° continuous rotation with lockable position
• Dial division: 2°; numerical marks every 20°
• Mainly used for positioning waveplates, polarizers, and other polarization optical components
• Accommodates Ø1-inch optics up to 9.4 mm thick
• Compatible with 30 mm cage systems
• Bottom M4 threaded hole for post mounting

The 30 mm rotation mount enables 360° continuous rotation. Its smooth adjustment mechanism allows precise positioning of waveplates, polarizers, and other polarization components.

表格

Item	CRD-25	S/N0007
Dimensions	40.6×40.6×16.0 mm	40.6×40.6×16.0 mm (adjuster excluded)
Adjustment Range	360° rotation, 2° division	Main scale: 360° rotation, 2° division; Vernier adjustment: ±7°, accuracy 5 arcminutes
Center Bore	SM1 (1.035”-40) internal thread	SM1 (1.035”-40) internal thread
Through-Hole Spacing	Ø6.02 mm, 30×30 mm spacing	Ø6.02 mm, 30×30 mm spacing
Threaded Hole	1×M4	1×M4
Weight	32.4 g	50.8 g
Material	7075 Aluminum Alloy	7075 Aluminum Alloy

Technical Description

The 30 mm rotation mount provides 360° continuous rotation and smooth adjustment for precise positioning of waveplates, polarizers, and other polarization optics. It holds Ø1-inch optics up to 9.4 mm thick, secured by the included CSK3 retaining ring. Thicker optics can be used with an SM1-series lens sleeve threaded into the mount.

The CRD-25 features a 2°-division rotation mechanism, allowing manual positioning and locking with a side setscrew. For higher precision, choose the S/N0007 model with a micrometer head. When locked, the precision micrometer enables fine adjustment within ±7°, with a vernier resolution of 5 arcminutes.

To integrate the rotation mount into a cage system, two LPCM-series cage plate adapters can build a 60 mm cage frame on both sides. The MPV-LK3 prism mount (12.7×42.7 mm platform) attached in front serves as an accessory, enabling free rotation without cage rod interference while preserving the 30 mm cage system optical axis.

The mount can be attached to a Ø12 mm stainless steel post via the bottom M4 threaded hole for free-space experiments.

Experimental Content

• Assembly

• Application Examples

• Engineering Drawings

CRD-25 Engineering Drawing