JM Performance Products Changes Material Used in Retention Knobs
Westec 2019: JM Performance Products has begun changing the material used in the production of its retention knobs from 8620H to 9310H grade steel.
Share
JM Performance Products has begun changing the material used in the production of its retention knobs from 8620H to 9310H grade steel. The 9310H material offers 40% greater tensile strength, the company says, which is expected to meet changing milling demands. This change in material predominantly affects the 30- and 40-taper knobs, although some 50-taper knobs have been included.
The company’s high-torque knobs are designed to eliminate toolholder expansion, which is said to be the main cause of vibration, chatter, runout, poor tool life, poor tolerances and other milling issues.
Having identified a design flaw regarding the expected cross-sectional strength of the knobs, JMPP has begun modifying the size of the coolant holes in many of the 30- and 40-taper knobs. The knobs will continue to supply more coolant than demanded, but will be sized to increase the cross-sectional strength of the knobs.
As the retention knobs made from 8620H are phased out, they will be replaced by an HS (High Strength) version.
Related Content
-
How to Troubleshoot Issues With Tool Life
Diagnosing when a tool is failing is important because it sets an expectation and a benchmark for improvements. Finding out why gives us a clue for how to fix it.
-
Parts and Programs: Setup for Success
Tips for program and work setups that can simplify adjustments and troubleshooting.
-
The Future of High Feed Milling in Modern Manufacturing
Achieve higher metal removal rates and enhanced predictability with ISCAR’s advanced high-feed milling tools — optimized for today’s competitive global market.