G693

description

• Boston Gear's internal gears are spur gears turned "inside out." In other words, the teeth are cut into the inside diameter while the outside diameter is kept smooth. This design allows for the driving pinion to rotate internal to the gear, which, in turn, allows for clean operation. Intended for light duty applications, these gears are available only in brass. When choosing a mating spur gear, always remember that the difference in the number of teeth between the internal gear and pinion should not be less than 15 (14 1/2° PA) or 12 (20° PA).

features

• More cost effective, quieter running and metallic options
• Four ball wear test 40 kg: 63 mm
• Reliability from steel, cast iron and brass
• Parallel shaft applications
• Base oil viscosity: 500 SUS @ 100 °F