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120:1 Mini Plastic Gearmotor HP, Offset 3mm D-Shaft Output, with 12 CPR Encoder, Back Connector
This small gearmotor features a brushed DC motor with a 120:1 plastic gearbox and a quadrature encoder with back connector (cables sold separately). While intended for operation at 4.5 V, it runs comfortably in the 3 V to 6 V range. The gearbox has a 9.7 mm long, 3 mm diameter D-shaped output shaft, and a built-in safety clutch helps protect the gears from excessive loads.
| voltage | no-load performance | stall extrapolation | encoder type |
|---|---|---|---|
| 4.5 V | 150 RPM, 130 mA | 1.8 kg⋅cm (25 oz⋅in), 1.25 A | 12 CPR incremental quadrature with back connector |
select_by_specifications 0J1520 0J208
Compare all products in Plastic DC Gearmotors or Encoders for Mini Plastic Gearmotors or Romi Chassis and Accessories or Romi Chassis Components.
| Description | Specs (11) | Pictures (11) | Resources (3) | FAQs (0) | On the blog (0) | Distributors (0) |
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File downloads
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3D models of the Magnetic Encoder with Connector (Top-Entry or Side-Entry) for Mini Plastic Gearmotor (4MB zip)
This file contains 3D models (in the step file format) of the components for the Magnetic Encoder Pair Kit with Top-Entry Connector and the Magnetic Encoder Pair Kit with Side-Entry Connector as well as models of the Mini Plastic Gearmotor with 12 CPR Encoder, Back Connector, and with 12 CPR Encoder, Side Connector.
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dimension diagram: offset 3mm D-shaft and extended motor shaft version HP (184k pdf)
Dimension diagram of the mini plastic gearmotor HP with offset 3mm D-shaft output and extended motor shaft.
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Dimension diagram of the Magnetic Encoder Pair Kit with Connector (Top-Entry or Side-Entry) for Mini Plastic Gearmotor (490k pdf)
This file contains dimension diagrams for the Magnetic Encoder Pair Kit with Top-Entry Connector and the Magnetic Encoder Pair Kit with Side-Entry Connector.
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Coupon Discount
3548INTRO: Get one or more of #3548 120:1 Mini Plastic Gearmotor HP, Offset 3mm D-Shaft Output, with 12 CPR Encoder, Back Connector and #3549 120:1 Mini Plastic Gearmotor HP, Offset 3mm D-Shaft Output, with 12 CPR Encoder, Side Connector at $11.95. This offer is valid through 30 Sep 2026.
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