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"Lube for Life"
By Dr. Alan J. Heckler
Hoist, August/September 2003, pg. 19

"Bearings Lubed-for-Life"
By Dr. Alan J. Heckler
Plant Engineering, March 2004, pp. 44-45

"Microporous Polymeric Lubricants Provide Unconventional but Effective Solutions"
By Dr. Neil Canter
Tribology & Lubrication Technology, June 2004, pp. 18-22

"Staying Power"
Edited by Elisabeth Eitel
Motion System Design, September 2004, pp. 34-40

"Improved Lubrication System for Overhead Cranes"
By Brandon M. Collins, Dr. Alan J. Heckler and Amy B. Minck
Iron & Steel Technology, June 2007, pp. 46-50

"Lubed for Life Using Microporous Polymeric Lubricants"
By Dr. Alan Heckler
Machinery Lubrication, September/October 2002, pp. 48-52

"The Right Touch"
By Dr. Alan Heckler and Dr. Franklin Guzzetta
Motion System Design, July 2005, pp. 32-36

By Brandon Collins and Dr. Alan Heckler
Overhead Crane & Hoist (OCH), July/August 2010, pp. 12-13

"MicroPoly Lubricants"
By Dr. Franklin H. Guzzetta and Dr. Alan J. Heckler

"Applications of Solid Profiles Made from MicroPoly Lubricants"
By Dr. Alan J. Heckler and Dr. Franklin H. Guzzetta

"Microporous Polymeric Lubricants"
By Dr. Alan J. Heckler

A Study of an Improved Overhead Crane Wheel Flange Lubrication System"
By Alan J. Heckler, Brandon M. Collins, Amy Minck Lachman, Franklin H. Guzzetta and Thomas Coyle
Iron and Steel Technology, September 2014

MicroPoly-filled bearings do have speed limitations. The following formula and chart determine the maximum allowable speed for a MicroPoly-filled bearing running at room temperature.

Maximum RPM =  NDM Value
1/2 (Bore + O.D.)

Note: Bore and O.D. must be in mm. Limiting Speeds:

Bearing TypeNdm Value
Single row ball bearing, metal cage 300,000
Single row ball bearing, plastic cage 40,000
Double row ball bearing 150,000
Angular contact ball bearing 150,000
Self-aligning ball bearing 150,000
Cylindrical roller bearing 150,000
Needle roller bearing 150,000
Spherical roller bearing 85,000
Tapered roller and roller thrust bearings 45,000
Double tapered roller bearing 22,500

These values are based on normal ambient operating temperatures. As operating temperatures increase, the maximum operating speed may have to be decreased.

The values reflected in the table above may be affected by the quality of the bearings used. High quality bearings generally outperform lower quality bearings.

Max RPM Calculator Tool


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