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25:1, 36mm Planetary Gearmotor, RS-385 Motor
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Code: MP-36025-385
Price: $37.50
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These gearmotors are custom made for robotic applications. They feature all metal planetary gears and use two ball bearings to support the shaft. The integrated motor mounts and extra long shafts make them easy to integrate into your design and eliminate the cost and complexity of separate motor mounts and shaft extenders.
A durable, 5-pole balanced armature, RS-385 (Speed 400 size) motor comes standard with these gearboxes. If this motor does not meet your needs, it can be easily replaced with any motor having a 2.3mm shaft and a standard RS-380 mounting pattern. You can pull the pinion off the included motor with our GWS Standard Gear Puller or purchase a new pinion. We also carry replacement motors if you need one.
Note:
This gearbox is available with either an RS-380 (speed 400) or RS-550 mounting plate. If you plan to change the motor, please ensure that you purchase the correct gearbox - the mounting plate is different for the two motors.
Bundle Savings
You can save 10% on a matching bearing block when you purchase it with the gearmotor. Simply check the box to add it.
IMPORTANT NOTE:
Mounting a large load to the end of an unsupported shaft may damage the gearmotor!!! The shafts on these motors are supported by two ball bearings making them fairly rugged; however, we do not recommend them to be used with large overhung loads. We recommend using a design that supports the end of the shaft. If it is not possible to support the end of the shaft, we recommend mounting the load as close to the face of the gearmotor as possible and cutting the shaft to length. Our 1.5 inch bearing block provides a simple and effective way to support the shaft.
Gearmotor Specifications| Physical | | Type | : Planetary | | Reduction | : 25:1 | | Stages | : 2 | | Gear Material | : All Metal | | Weight (Gearbox only) | : 6.5 oz | (184g) | | Weight (with motor) | : 9 oz | (255g) | | Length (Gearbox only) | : 1.6 in | (40mm) | | Length (with motor) | : 3.2 in | (81mm) | | Width (Sqaure) | : 1.5 in | (38mm) | | Shaft Diameter | : 0.375 in | (10mm) | | Shaft Length | : 2.15 in | (55mm) | | Shaft Key | : 0.125 in | (3.2mm) | | Shaft End Tap | : #8-32 | | Mounting Holes (12) | : #10-32 |
| | Calculated Performance* | | Motor | : RS-385 (Pinion) | | Operating v | : 3v - 9v | | Nominal v | : 7.2v | | No Load RPM | : 654 | | No Load A | : 1A | | Stall Current | : 17A | | Stall Torque | : 238 oz-in | 1681 mN-m | | Kt | : 14 oz-in/A | 99 mN-m/A | | Kv | : 91 rpm/v |
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*All performance numbers are calculated using motor data at Nominal Voltage. They do not factor in loss from the gearbox.
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