ER40UM(M50) Collet Nut – Precision and Durability for Demanding Machining Tasks Specifications: Thread Diameter: 50 mm / 1.97 in Thread Pitch: 1.5 mm / 0.06 in Outer Diameter: 63 mm / 2.48 in Thickness: 26 mm / 1.02 in Material and Build Quality: Manufactured from strength 40Cr alloy steel Heat treated to a hardness of HRC4850 for durability and toughness Resistant to wear and deformation in load machining environments Key Benefits: Reliable replacement part that restores or maintains tool holder performance Provides a secure and precise grip on collets to ensure tool stability Designed for long service life even under continuous industrial use Compatibility: Works with most ERstyle tool holders Suitable for extension bar nut holding drill bits, boring tools, and other compatible tooling systems Hex nut design allows easy installation and removal Applications: CNC lathes: Ensures accurate tool positioning for fine turning work Milling machines: Maintains tool stability for consistent milling precision General machining: Ideal for mechanical processing, metalworking, and automotive manufacturing where accuracy is critical Practical Use Scenarios: Machine replacing a wornout ER40 nut to improve tool clamping strength and extend production uptime CNC operator setting up a milling job that requires secure collet grip for precision drilling and finishing Automotive parts manufacturer using ER tooling for repetitive metal cutting operations requiring consistent accuracy and reduced downtime This ER40UM(M50) collet nut delivers the strength, precision, and reliability needed for professional machining environments, making it a dependable choice for a wide range of industrial applications.