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Planetary Gearboxes
Frame 34 Gearboxes
Specifications
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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InLine Planetary Specifications
| MODEL | DRAWING NUMBER | GEAR RATIO | BACKLASH (arc min) | MIN EFF (%) | GEARBOX LENGTH (in) | WT (lbs) | TORQUE | INERTIA | ||
|---|---|---|---|---|---|---|---|---|---|---|
| CONT. (in lbs) | PEAK (in lbs) | REFLECTED (oz in sec²) | GEARHEAD (oz in sec²) | |||||||
| 34P:3 | G2500005 | 3 | 6 | 90 | 4.19 | 7 | 1285 | 2008 | 0.004901 | 0.004672 |
| 34P:4 | G2500005 | 4 | 6 | 90 | 4.19 | 7 | 1219 | 1905 | 0.002522 | 0.002833 |
| 34P:5.5 | G2500005 | 5.5 | 6 | 90 | 4.19 | 7 | 1113 | 1740 | 0.002040 | 0.001585 |
| 34P:7 | G2500005 | 7 | 6 | 90 | 4.19 | 7 | 935 | 1461 | 0.001955 | 0.000998 |
| 34P:10 | G2500005 | 10 | 6 | 90 | 4.19 | 7 | 552 | 828 | 0.001923 | 0.000496 |
| 34P:16 | G2500006 | 16 | 11 | 85 | 5.31 | 8 | 1315 | 2055 | 0.002522 | 0.002824 |
| 34P:22 | G2500006 | 22 | 11 | 85 | 5.31 | 8 | 1333 | 2083 | 0.002040 | 0.001580 |
| 34P:28 | G2500006 | 28 | 11 | 85 | 5.31 | 8 | 1346 | 2103 | 0.001955 | 0.000995 |
| 34P:40 | G2500006 | 40 | 11 | 85 | 5.31 | 8 | 1364 | 2132 | 0.001923 | 0.000495 |
| 34P:49 | G2500006 | 49 | 11 | 85 | 5.31 | 8 | 1015 | 1587 | 0.001955 | 0.000942 |
| 34P:55 | G2500006 | 55 | 11 | 85 | 5.31 | 8 | 1232 | 1925 | 0.001923 | 0.000476 |
| 34P:70 | G2500006 | 70 | 11 | 85 | 5.31 | 8 | 1027 | 1605 | 0.001923 | 0.000468 |
| 34P:100 | G2500006 | 100 | 11 | 85 | 5.31 | 8 | 507 | 761 | 0.001923 | 0.000462 |
Right Angle Specifications
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| MODEL NUMBER | DRAWING NUMBER | GEAR RATIO | BACKLASH (arc min) | MIN. EFF. (%) | GEARHEAD LENGTH (in) | WT. (lbs) | MAX RATED CONTINUOUS TORQUE (in-lb) | MOMENTARY TORQUE(in-lb) | REFLECTED PINION INERTIA (oz in sec²) | GEARBOX INERTIA (oz in sec²) |
|---|---|---|---|---|---|---|---|---|---|---|
| 34RA:3 | G2500055 | 3 | 11 | 85 | 9.16 | 12.5 | 1285 | 2008 | 0.004901 | 0.011760 |
| 34RA:4 | G2500055 | 4 | 11 | 85 | 9.16 | 12.5 | 1219 | 1905 | 0.002522 | 0.006818 |
| 34RA:5.5 | G2500055 | 5.5 | 11 | 85 | 9.16 | 12.5 | 1113 | 1740 | 0.002040 | 0.003693 |
| 34RA:7 | G2500055 | 7 | 11 | 85 | 9.16 | 12.5 | 935 | 1461 | 0.001955 | 0.002300 |
| 34RA:10 | G2500055 | 10 | 11 | 85 | 9.16 | 12.5 | 552 | 828 | 0.001923 | 0.001134 |
| 34RA:16 | G2500056 | 16 | 15 | 80 | 10.29 | 13.5 | 1315 | 2055 | 0.002522 | 0.002944 |
| 34RA:22 | G2500056 | 22 | 15 | 80 | 10.29 | 13.5 | 1333 | 2083 | 0.002040 | 0.001644 |
| 34RA:28 | G2500056 | 28 | 15 | 80 | 10.29 | 13.5 | 1346 | 2103 | 0.001955 | 0.001035 |
| 34RA:40 | G2500056 | 40 | 15 | 80 | 10.29 | 13.5 | 1364 | 2132 | 0.001923 | 0.000514 |
| 34RA:49 | G2500056 | 49 | 15 | 80 | 10.29 | 13.5 | 1015 | 1587 | 0.001955 | 0.000955 |
| 34RA:55 | G2500056 | 55 | 15 | 80 | 10.29 | 13.5 | 1232 | 1925 | 0.001923 | 0.000488 |
| 34RA:70 | G2500056 | 70 | 15 | 80 | 10.29 | 13.5 | 1027 | 1605 | 0.001923 | 0.000475 |
| 34RA:100 | G2500056 | 100 | 15 | 80 | 10.29 | 13.5 | 507 | 761 | 0.001923 | 0.000465 |
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.
Government Projects & Defense Applications
Empire Magnetics has been awarded and completed US Navy contracts in excess of $100,000 as a prime contractor. The Cage code number assigned was OYMU1, CEC code 19665900H. As a subcontractor to RSI/Comsat, SAIC, Lockheed Martin, Westinghouse, General Electric and other prime contractors for the US Government, contracts in excess of $200,000 have been awarded and completed.
Nationwide & International Distributors for Specialty Motors & Complete Motor System Solutions
Empire Magnetics products are distributed by a nationwide and international network of motion control sales professionals. Your local distributor carries the drives and controls, and the accessories needed to build a complete motion control system.