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Pilot bore can be opened to the nominal ID reflected in the part number
Friction force stops and holds the motor shaft
Design fully engages the thread for secure locking
Click here for spec sheet: NAT Spec Sheet
HB840R Bronze Helical Gear 35mm ID Pilot bore can be openedBoston Gears stock helical gears are manufactured in both right and left handed configurations with an industry standard 45 helix angle to transmit motion and power between non intersecting shafts that are parallel or at 90 to each other. For parallel shaft operation, helical gears with opposite hand helix angles are required. For shafts at 90, a same hand helix angles must be used. For parallel shaft applications, the overlapping tooth contact of our
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