Empire Magnetics Inc. prepares gearboxes to operate in the same environments as the motors and resolvers. We start with high quality planetary gearboxes. These units are selected to provide maximum torque capacity with the smallest practical volume. We then upgrade the materials construction and lubrication to meet the requirements of the environment.

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Specifications

Model Number Drawing Number Gear Ratio Backlash (degrees) Min Eff. (%) Gearhead Length (in) Wt. (lbs) Max. Rated Cont. Torque (in-lb) Momentary Torque (in-lb) Reflected Inertia (oz-in2)
34P:3 G2500005 3 0.10 90 4.19 7 1285 2008 2.91
34P:4 G2500005 4 0.10 90 4.19 7 1219 1905 2.27
34P:5.5 G2500005 5.5 0.10 90 4.19 7 1113 1740 1.81
34P:7 G2500005 7 0.10 90 4.19 7 935 1461 1.61
34P:10 G2500005 10 0.10 90 4.19 7 552 828 1.42
34P:16 G2500006 16 0.17 85 5.31 8 1315 2055 2.11
34P:22 G2500006 22 0.17 85 5.31 8 1333 2083 2.08
34P:28 G2500006 28 0.17 85 5.31 8 1346 2103 2.06
34P:40 G2500006 40 0.17 85 5.31 8 1364 2132 1.39
34P:49 G2500006 49 0.17 85 5.31 8 1015 1587 1.53
34P:55 G2500006 55 0.17 85 5.31 8 1232 1925 1.39
34P:70 G2500006 70 0.17 85 5.31 8 1027 1605 1.38
34P:100 G2500006 100 0.17 85 5.31 8 507 761 1.38
Gearboxes for stepper motors and brushless motors are designed for the accurate positional functions desired of such systems.
All of the planetary gearheads provide "in line" power transfer so there is no offset from the motor shaft to the output shaft of the gearhead.
Vacuum rated gearboxes have all the materials selected or replaced with items that are compatible with VC, VS, or VX grades. The VS and VX grades are cleaned in the same exacting fashion as other components of this vacuum level.
For VX grade we offer dry film lubrications as an option, while the vapor pressure is lower on dry film lubrications, the wear life is also lower. The application specifics must be considered to make the decision.
Planetary gearboxes are available for stepper motors from size 17 to size 65, adapted versions of these same gearboxes can be mounted to brushless servo motors as well.

Other gearbox types:

For specific applications custom units using spur gears can be provided. Typically these are useful on very small motors such as the size 11.
In other applications where weight or space is highly constrained, we can offer harmonic style gearboxes. These gearboxes offer high ratios (but not low ones) in a compact lightweight design. They offer low backlash, but they are not as stiff as the other gearboxes. They do offer smooth motions for tool path applications.