Literature

PEM engineers have written many S.A.E Technical papers and have received numerous patents.

Ball & Ramp Slip Clutch Paper (PDF - 156KB)		Increased Fatigue Life and Power Density with Megagears® and Unimegagears® (PDF - 362KB)
Crawler transaxle with differential Lock and Variable Steering (PDF - 185KB)		Increased Gear Fatigue Life With Megagears® and Unimegagears® (PDF - 140KB)
Determining the Static and Dynamic Coefficient of Friction and its causes for variation (PDF - 152KB)		Increased Power Density, Efficiency, and Durability With Megagears® and Unimegagears® (PDF - 242KB)
DU2876 (PDF - 1MB)		Introduction to Gear Design (PDF - 117KB)
DU3457 (PDF - 825KB)		Longer Fatigue life at Lower Cost with Megagears® and Unimegagears® (PDF - 153KB)
Gear Box Design with Flywheel for Reduced Vibrations and Energy Savings (PDF - 260KB)		Natural Frequency of Torsional Vibrations in Sugar Mill Drives (PDF - 330KB)
High Horsepower Planetary Gear Boxes for Reduced Cost and Improved Efficiency in Sugar Cane Mill Applications (PDF - 286KB)		Spur and Helical Gear Design (PDF - 179KB)
Improving Gear Box Durability (PDF - 267KB) NASA - Gear Sound Levels (PDF - 1MB) NASA - High Contact Ratio (PDF - 982KB) Long Term Storage (Word Document - 78KB)		United States Patent (PDF - 470KB) NASA - High Pressure Angle Gears (PDF - 5MB) Guide To Interchangeable Lubricants (PDF - 232KB) EP Additives (Word Document - 80KB)