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Ideal for space constrained areas
Traditional cost effective rigid coupling design provides torque transmission and alignment
Its proven modular design has set the industry standard for performance and is the most imitated product in today's worm gear speed reducer market
Product Note: BOStonE F-1 bearings may be green
including plain
G689 Brass Internal Spur Gear 1.750" ID Ideal for space constrained areasBoston Gears 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
