The CMT ER32 Precision Collet - 1/4" Diameter (6.35mm) is a high-accuracy tool-holding collet engineered to DIN 6499 standards, designed for use with ER32 chuck systems on CNC routers, machining centers, and point-to-point machines. Built for professional woodworking and light metalworking environments, this replaceable collet delivers consistent, repeatable clamping force on 1/4" shank router bits and milling tools - helping operators maintain tight tolerances across long production runs. Whether you are running hardwood panels, MDF sheets, or aluminum components, this ER32 collet provides the secure, concentric grip needed to keep cutting tools performing at their best.

Key Features

• DIN 6499 Precision Machining - ground to the internationally recognized DIN 6499 standard, this collet minimizes runout so your cutting tools track accurately and produce cleaner cuts with less surface tearout.
• ER32 System Compatibility - fits a broad range of ER32 chucks including CMT models 183.000, 183.100, 183.200, 183.250, 183.300, and 183.400, giving you flexibility across multiple machine setups without purchasing separate tool-holding systems.
• 1/4" (6.35mm) Bore Diameter - sized to accept standard 1/4" shank router bits and spiral mills, one of the most widely used shank sizes in professional CNC routing and milling applications.
• Replaceable Standard Collet Design - swaps out independently without replacing the full chuck assembly, reducing downtime and maintenance cost when a collet shows wear or is dedicated to a specific tool.
• Fits Most Tapered Spindle Noses - the ER32 profile is a globally standardized collet size, compatible with a wide variety of CNC router spindles and machining center spindle noses beyond just CMT-branded chucks.
• 0.015mm Clamping Tolerance - this fine clamping tolerance ensures tool concentricity is maintained, which directly reduces vibration, extends cutting tool life, and improves finished surface quality on wood, composite, and aluminum workpieces.

Why This Product

• If you already run CMT ER32 chucks (183.000, 183.100, 183.200, 183.250, 183.300, or 183.400), this collet is a direct, confirmed-fit replacement - no guesswork about compatibility.
• The DIN 6499 precision ground construction keeps runout to a minimum, which is critical when routing fine joinery, dado cuts, or complex CNC profiles where tool deviation of even a fraction of a millimeter affects fit and finish.
• With a 0.015mm clamping tolerance, this collet holds 1/4" shank tools with exceptional grip consistency - reducing the risk of tool pull-out during aggressive feed rates in hardwood or aluminum milling operations.
• As a replaceable standard ER32 collet, it lets you dedicate individual collets to specific tools and swap them quickly during job changes, improving workflow efficiency on busy CNC routing or boring setups.

Specifications

• Manufacturer Part Number: 184.065.00
• Brand: CMT Orange Tools
• Collet System: ER32
• Standard: DIN 6499
• Bore Diameter: 1/4" (6.35mm)
• Clamping Tolerance: 0.015mm
• Compatible Chucks: 183.000, 183.100, 183.200, 183.250, 183.300, 183.400
• Collet Range: 3mm to 20mm (standard ER32 series)

Approved Applications

• CNC Routing
• Boring
• Milling
• Hardwood machining
• Softwood machining
• MDF and plywood processing
• Composite material cutting
• Aluminum milling