Note: It is important to realize that when you increase or decrease speed (RPM), horsepower also increases or decreases proportionately. HOWEVER, torque always remains constant.
HP =
4KW x 1.31
KW =
HP x 0.7457
ft-lb =
Nm x 0.737562
in-lb =
Nm x 8.85
Nm =
ft-lb x 1.356
in-lb x 0.113
ft-lb/sec =
HP x 550
Torque
KW x 1.341
Horsepower / RPM / Torque Relationship
Circumference
Gear Ratios
Articles
Power Transmission Design Magazine Basic Engineering Belt and Chain Drives Gear and Gear Drives Clutches and Brakes Adjustable Speed Drives Bearings Couplings and U Joints Motors