Product Description
CMT Clamping Nut M40 x 1.5mm Right-Hand for ER32 Chucks is a precision-machined replacement clamping nut engineered for secure, consistent collet clamping in CNC chuck systems. Designed with a right-hand thread profile and a 50mm outer diameter, this nut is purpose-built for compatibility with the CMT 183.000, 183.100, 183.200, 183.250, 183.300, and 183.400 chuck series - delivering reliable tool retention on CNC routers and machining centers where accuracy and repeatability are critical.
Key Features
- M40 x 1.5mm right-hand thread - matches the thread specification of compatible ER32 chuck bodies exactly, ensuring proper engagement and preventing cross-threading during collet changes.
- 50mm outer diameter - provides a positive gripping surface for a C-spanner or torque wrench, allowing controlled clamping force application on precision collets.
- Right-hand (RH) rotation - aligns with standard tool-tightening direction, reducing the risk of loosening under normal CNC spindle operation.
- Compatible with 183.000/100/200/250/300/400 chuck series - serves as a direct, drop-in replacement across multiple CMT ER32 chuck models, simplifying spare parts management in a multi-chuck shop environment.
- Clamping nut without bearing - delivers a straightforward, low-profile nut design suited for standard ER32 collet clamping applications where a bearing nut is not required.
Why This Product
- When a worn or damaged clamping nut compromises collet grip, this direct replacement restores full clamping performance across a wide range of CMT ER32 chuck bodies - minimizing machine downtime.
- The M40 x 1.5mm thread standard combined with the 50mm diameter gives operators a reliable, repeatable method for applying consistent clamping torque to ER32 precision collets.
- Broad compatibility across six CMT chuck models (183.000 through 183.400) means a single spare nut can cover multiple chucks in the same shop, reducing the need to stock separate parts for each unit.
- The right-hand thread orientation ensures the nut remains secure during forward-direction spindle rotation, supporting safe, predictable performance in CNC routing and milling operations.
Specifications
- Manufacturer Part Number: 992.183.01
- Brand: CMT Orange Tools
- Description: Clamping Nut M40 x 1.5mm RH
- Shank / Thread: M40 x 1.5mm
- Diameter: 50mm
- Rotation: Right-Hand (RH)
- Compatible Chuck Series: 183.000, 183.100, 183.200, 183.250, 183.300, 183.400
- Collet System: ER32
Frequently Asked Questions
Which CMT chuck models is this clamping nut compatible with?
This clamping nut is compatible with the CMT 183.000, 183.100, 183.200, 183.250, 183.300, and 183.400 chuck series - all of which use the ER32 collet standard with an M40 x 1.5mm right-hand thread interface.
Does this clamping nut include a bearing?
No. This is a clamping nut without a bearing. It is designed for standard ER32 collet clamping applications across the compatible 183 series chuck bodies listed above.
What does the right-hand thread direction mean for my application?
A right-hand (RH) thread tightens in the clockwise direction. This orientation is standard for most CNC routing and milling applications and ensures the nut stays securely engaged during normal forward-direction spindle operation.
What is the outer diameter of this clamping nut?
The outer diameter of this clamping nut is 50mm. This dimension is important when selecting the correct C-spanner or torque wrench size for applying proper clamping force to the ER32 collet and chuck assembly.
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