Bearing Collet Nut ER40 by Tegara

High-Speed, Pre-Balanced: The internal clamping ring's design minimizes imbalance, outperforming standard ER collet nuts with off-center o-rings. It achieves 12,000 RPM without requiring hole drilling, preserving the collet nut's body strength on dynamic balanced machines. Internal ball bearings in a tapered raceway prevent twisting at the collet and nut contact point, ensuring smooth and stable collet collapse around the cutting tool. This enhances overall runout and clamping force. The ball bearings are Taiwanese-made, and the collet nut is balanced to 12,000 RPM. Crafted from alloy steel, hardened to 55-56 HRC, with precision-ground internal threads and taper. Compatible with most standard ER tool holders, ER collets, and ER nose style collet wrenches, regardless of brand.

• Optimized for High-Speed Use: Pre-Balanced Design
• Smooth Operation: Internal Ball Bearing Tapered Raceway
• Premium Quality: Taiwan-Made Ball Bearing
• Durable Construction: Alloy Steel Hardened
• Precision Machining: Ground Internal Thread and Taper
• Versatile Compatibility: Standard ER Tool Holders and Collets
• Easy Wrenching: Compatible with ER Nose Style Collet Wrench