JM Performance Products, Inc.

1234 High Street

Fairport Harbor , OH 44077 US


As Seen In Modern Machine Shop

High-Torque Retention Knobs Solve Aerospace Milling Production Challenge

High-Torque Retention Knobs Solve Aerospace Milling Production Challenge
L.H. Thomson exclusively uses high-torque retention knobs from JM Performance Products on every tool on its machines to improve heavy milling on titanium and stainless steel parts.

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.

retention knobs

Retention Knobs Cut Down on Toolholder Expansion
Eastec 2019: JM Performance Products’ high-torque retention knobs are designed to eliminate toolholder expansion, which causes vibration, chatter, run-out, poor finishes and poor tolerances.

Olson Custom Designs shop floor

With Retention Knobs, Shop Sets Sight on Aerospace Machining
Mitch and Brian Olson didn’t know much about CNC machining when they started their machine shop, but they learned that if they wanted to pursue high-accuracy aerospace work, they would need to overcome a flaw inherent in V-flange tooling.

Makino D200Z five-axis machine

Machining Technology Spotted at Amerimold 2018
Amerimold presents a range of mold production equipment, strategies and best practices. Here is some of the mold machining technology displayed at this year’s event, ranging from automation to CAD/CAM.

JM Performance Products' Taper Shank Test Fixture.

Testing Gage Checks for Toolholder Expansion
Concerns over tooling cost containment and optimal tooling performance have led to the creation of JM Performance Products Inc.’s Taper Shank Test Fixture. 

side by side spindle comparison

Overcoming Toolholder Deformation with High-Torque Retention Knobs
At Hansen Engineering Co., toolholder expansion reduced spindle contact, causing a variety of production issues. High-torque retention knobs from JM Performance Products increased productivity and reduced downtime.

Toolholder wear indicative of taper deformation

The Knob Problem
The retention knob is an unmistakably critical component of the machining process. However, the tightening of the knob itself can lead to the toolholder not seating securely in the machine. You may be losing tool life to knob tightness without even knowing it.

Test fixture

Video: Retention Knob Tightening And Toolholder Deflection
This footage illustrates how the toolholder taper is measured in a test designed to capture the retention knob’s effect on the shape of the toolholder taper.

Product Categories of JM Performance Products, Inc.

Data Collection Devices for Gaging, SPC, etc.
Gages, Digital
Milling Machines, Universal
Retention Knobs
Tool Conditioning Equipment
Tooling Systems, Modular and/or Quick-Change
Training of All Types, Including Audiovisual/Internet

Trade Names

ClampForce Drawbar Gage
High Torque Retention Knob
Retention Knob Sockets
Spindle Cleaning and Restoration ki
Taper Shank Test Fixture
Taper Shank Test Fixture