Product Description
CMT Stop Collar for 1/2" Shanks is a precision accessory designed to work with top bearing router bits, giving woodworkers and CNC operators reliable, repeatable depth control on every pass. By locking onto the shank of a 1/2" bit, this collar acts as a mechanical stop that limits travel and keeps the bit from being pulled through the collet or chuck under load - a critical safeguard during demanding routing and drilling operations.
Key Features
- Designed for top bearing bits - purpose-built compatibility means the collar seats correctly and functions reliably without improvised workarounds when used with CMT top bearing router bits.
- 1/2" bore (12.7mm) for standard shank sizes - fits the most common router bit and drill shank diameter, making it a versatile addition to a wide range of woodworking setups including routers, drill presses, and CNC routing machines.
- Depth of cut control - sets a hard, repeatable stop so every cut is consistent from the first pass to the last, eliminating the need to re-measure between identical operations.
- Prevents bit pullout - keeps the bit anchored in the collet or chuck even under routing load, reducing the risk of bit slippage and protecting both the workpiece and the operator.
Why This Product
- Repeatability for production and batch work - once the collar is set to the correct depth, every subsequent cut matches exactly, saving time and reducing waste across large woodworking runs.
- Added safety through mechanical stop action - the collar physically prevents the bit from traveling deeper than intended, which is especially valuable on a drill press or CNC routing machine where feed force can be high.
- Engineered specifically for top bearing bits - rather than a generic collar, this accessory is matched to the geometry of top bearing router bits, ensuring a secure and accurate fit without guesswork.
- Simple, direct compatibility with a 12.7mm bore - the precisely sized bore means no adapters or shims are needed when pairing this collar with standard 1/2" shanks across a variety of woodworking applications.
Specifications
- Manufacturer Part Number: 541.002.00
- Brand: CMT Orange Tools
- Product Type: Stop Collar
- Compatible Shank: 1/2"
- Bore Diameter: 12.7mm
Approved Applications
- Setting cutting depth on router bits and drill bits
- Preventing bit pullout through the collet or chuck
- Use with top bearing router bits on routers, drill presses, and CNC routing machines
- Repeatable depth operations across all woodworking materials
Frequently Asked Questions
What type of bits is this stop collar designed to work with?
This stop collar is specifically designed for use with top bearing router bits. It is sized for 1/2" shanks and provides a secure mechanical stop when used with compatible bits.
What is the bore diameter of the CMT 541.002.00 stop collar?
The bore diameter is 12.7mm, which corresponds to a standard 1/2" shank. This allows the collar to fit snugly onto any 1/2" router bit or drill bit shank.
What machines can this stop collar be used with?
The stop collar is compatible with routers, drill presses, and CNC routing machines - any tool that accepts 1/2" shank bits and benefits from repeatable depth control or bit pullout prevention.
How does a stop collar prevent bit pullout?
Once locked onto the shank, the collar acts as a physical barrier against the collet or chuck face, preventing the bit from being drawn deeper into the tool under cutting load. This keeps the bit at a fixed, consistent position throughout the operation.
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