Products for **USB Sensing** and **Control**

ID: 3271_1

This DC motor has a 18:1 gearbox, a rated speed of 139 RPM and rated torque of 20.4 Kg·cm.

Discontinued

The 3271 is a 24 volt gear motor, generating 20.4 Kg-cm of torque at 139 RPM. It's a large motor that provides lots of torque, even at higher speeds.

The planetary gearbox on this motor is more sophisticated than a typical spur gearbox and will provide greater efficiency, higher torque, and quieter motor operation.

This revision of the 3271 has had its rear shaft and mounting holes changed to be compatible with the 3531 - Optical Rotary Encoder HKT22.

Motor Properties | |
---|---|

Motor Type | DC Motor |

Output Power (Mechanical) | 30 W |

Maximum Speed at Rated Voltage | 139 RPM |

Rated Torque | 20.4 kg·cm |

Stall Torque | 132 kg·cm |

Electrical Properties | |

Rated Voltage | 24 V DC |

Rated Current | 2.2 A |

Stall Current | 10.8 A |

Physical Properties | |

Shaft Diameter | 12 mm |

Wire Length | 300 mm |

Weight | 1.5 kg |

Gearbox Specifications | |

Gearbox Type | Planetary |

Gear Ratio | 18 ^{1}⁄_{16} : 1 |

Number of Gear Trains | 2 |

Maximum Strength of Gears | 153 kg·cm |

Shaft Maximum Axial Load | 200 N |

Shaft Maximum Radial Load | 100 N |

Backlash Error | 3° |

DC motors can be simply connected to a power supply according to their rated voltage in order to make them run, but if you want to have control over direction, velocity, and acceleration in real-time, you'll need to use a motor controller. In order to connect this motor to a controller, you can connect the wires to the motor terminal on the controller. Don't worry about wiring the motor backwards; doing so will only reverse the direction of rotation. This motor requires higher voltage than our small motors, so only the following controllers are suitable:

Product | Electrical Properties | Controller Properties | Board Properties | |||||
---|---|---|---|---|---|---|---|---|

Image | Part Number | Price | Supply Voltage Max | Continuous Motor Current Max | Number of Motor Ports | Velocity Resolution | Acceleration Resolution | Controlled By |

1065_1B | $75.00 | 28 V DC | 5 A | 1 | 0.39 % Duty Cycle | 24.5 % Duty Cycle/s | USB (Mini-USB) | |

DCC1000_0 | $75.00 | 30 V DC | 25 A | 1 | 0.001 Duty Cycle | 1 % Duty Cycle/s | VINT | |

DCC1002_0 | $40.00 | 30 V DC | 4 A | 1 | 0.001 Duty Cycle | 0.1 Duty Cycle/s | VINT | |

DCC1003_0 | $60.00 | 30 V DC | (per motor) 4 A | 2 | 0.001 Duty Cycle | 0.1 Duty Cycle/s | VINT |

If you need to connect the main shaft of this motor to another device with a shaft, you can use a shaft coupler:

Product | Physical Properties | ||||||
---|---|---|---|---|---|---|---|

Image | Part Number | Price | Inner Diameter | Material | Coupling Rated Torque | Coupling Rated Speed | Torsional Stiffness |

TRM4317_0 | $2.80 | 12 mm | Aluminum | 35.7 kg·cm | 12000 RPM | — | |

TRM4318_0 | $6.85 | 12 mm | Aluminum | 611.8 kg·cm | 4000 RPM | — |

If you're using this motor to drive a rotary system that requires a lot of torque, you may be interested in pulleys and sprockets. By using a two pulleys or sprockets of different sizes, you can increase the gear ratio of the motor. Pulleys and sprockets can also be used to transmit the motor's rotation over a long distance. For more guidance on building a transmission system, visit our Rotary Motion Primer. Here is a list of our 12mm bore pulleys and sprockets:

Product | Physical Properties | |||
---|---|---|---|---|

Image | Part Number | Price | Inner Diameter | Number of Teeth |

TRM4107_0 | $3.00 | 12 mm | 36 | |

TRM4108_0 | $3.00 | 12 mm | 44 | |

TRM4109_0 | $3.55 | 12 mm | 60 | |

TRM4110_0 | $4.45 | 12 mm | 80 | |

TRM4120_0 | $3.00 | 12 mm | 16 | |

TRM4121_0 | $3.70 | 12 mm | 24 | |

TRM4122_0 | $5.00 | 12 mm | 34 | |

TRM4123_0 | $7.40 | 12 mm | 50 | |

TRM4124_0 | $12.95 | 12 mm | 72 | |

TRM4139_0 | $2.45 | 12 mm | 10 | |

TRM4140_0 | $2.80 | 12 mm | 18 | |

TRM4141_0 | $3.35 | 12 mm | 32 | |

TRM4142_0 | $4.65 | 12 mm | 52 | |

TRM4144_0 | $2.80 | 12 mm | 9 | |

TRM4145_0 | $3.55 | 12 mm | 14 | |

TRM4146_0 | $4.45 | 12 mm | 20 |

Mounting this motor to a flat surface is easy with these metal mounting brackets. The holes on the bracket match those on the front of the gearbox. The following brackets will fit the mounting holes on this motor:

Product | Physical Properties | |||
---|---|---|---|---|

Image | Part Number | Price | Mounting Plate Size | Material |

3339_0 | $4.00 | NEMA - 23 | Mild Steel (Coated) |

Systems with heavy loads or pulley/sprocket assemblies often put a lot of sideways strain on the motor shaft. If you're using this motor to drive such a system, you can use rotary bearings to protect the motor:

Product | Physical Properties | Mechanical Properties | ||||
---|---|---|---|---|---|---|

Image | Part Number | Price | Inner Diameter | Bearing Type | Static Load | Dynamic Load |

TRM4502_0 | $4.00 | 12 mm | Rotary Shaft (Flanged) | 2.4 kN | 5.1 kN | |

TRM4503_0 | $4.00 | 12 mm | Rotary Shaft (Pillow Block) | 2.4 kN | 5.1 kN |

The rear shaft of this motor can be equipped with an encoder for applications where you need to keep track of the exact position, velocity, or acceleration of the motor. The mounting holes on the back of this motor are compatible with the following encoders:

Product | Motor Properties | Physical Properties | Gearbox Specifications | |||||
---|---|---|---|---|---|---|---|---|

Image | Part Number | Price | Maximum Speed at Rated Voltage | Rated Torque | Shaft Diameter | Weight | Gear Ratio | Gearbox Type |

3254_0 | $10.00 | 230 RPM | 200 g·cm | 6 mm | 128 g | 10 : 1 | Spur | |

3255_0 | $10.00 | 127 RPM | 310 g·cm | 6 mm | 133 g | 18 : 1 | Spur | |

3256_0 | $11.00 | 46 RPM | 820 g·cm | 6 mm | 137 g | 50 : 1 | Spur | |

3257_0 | $11.00 | 23 RPM | 1.6 kg·cm | 6 mm | 136 g | 100 : 1 | Spur | |

3261_0 | $18.00 | 1080 RPM | 240 g·cm | 6 mm | 144 g | 3 ^{12}⁄_{17} : 1 |
Planetary | |

3262_1 | $18.00 | 285 RPM | 900 g·cm | 6 mm | 170 g | 13 ^{212}⁄_{289} : 1 |
Planetary | |

3263_1 | $20.50 | 78 RPM | 3.1 kg·cm | 6 mm | 193 g | 50 ^{801}⁄_{895} : 1 |
Planetary | |

3264_1 | $20.50 | 28 RPM | 8.5 kg·cm | 6 mm | 192 g | 139 ^{184}⁄_{1221} : 1 |
Planetary | |

3265_0 | $38.00 | 670 RPM | 540 g·cm | 8 mm | 416 g | 3 ^{12}⁄_{17} : 1 |
Planetary | |

3266_0 | $42.00 | 175 RPM | 1.9 kg·cm | 8 mm | 464 g | 13 ^{212}⁄_{289} : 1 |
Planetary | |

3266_1 | $42.00 | 175 RPM | 1.9 kg·cm | 8 mm | 464 g | 13 ^{212}⁄_{289} : 1 |
Planetary | |

3267_0 | $43.00 | 49 RPM | 6.6 kg·cm | 8 mm | 526 g | 50 ^{801}⁄_{895} : 1 |
Planetary | |

3267_1 | $43.00 | 49 RPM | 6.6 kg·cm | 8 mm | 526 g | 50 ^{801}⁄_{895} : 1 |
Planetary | |

3268_1 | $43.00 | 18 RPM | 17.3 kg·cm | 8 mm | 526 g | 139 184/1221 : 1 | Planetary | |

3269_3 | $69.00 | 588 RPM | 5.1 kg·cm | 12 mm | 1.3 kg | 4 ^{1}⁄_{4} : 1 |
Planetary | |

3270_1 | $66.00 | 192 RPM | 14.3 kg·cm | 12 mm | 1.5 kg | 12 ^{24}⁄_{25} : 1 |
Planetary | |

3272_2 | $72.00 | 53 RPM | 51 kg·cm | 12 mm | 1.7 kg | 46 ^{82}⁄_{125} : 1 |
Planetary | |

3273_2 | $72.00 | 33 RPM | 82.6 kg·cm | 12 mm | 1.7 kg | 76 ^{49}⁄_{64} : 1 |
Planetary | |

3274_2 | $76.00 | 15 RPM | 173 kg·cm | 12 mm | 2 kg | 167 ^{601}⁄_{625} : 1 |
Planetary | |

DCM4000_0 | $40.00 | 3280 RPM | 2.5 kg·cm | 8 mm | 1.4 kg | — | — | |

DCM4001_0 | $80.00 | 772 RPM | 10.6 kg·cm | 12 mm | 1.9 kg | 4.25:1 | Planetary | |

DCM4002_0 | $82.00 | 182 RPM | 45 kg·cm | 12 mm | 2.1 kg | 18:1 | Planetary | |

DCM4003_0 | $84.00 | 50 RPM | 162.5 kg·cm | 12 mm | 2.2 kg | 65:1 | Planetary | |

DCM4004_0 | $50.00 | 3000 RPM | 4.4 kg·cm | 10 mm | 2.7 kg | — | — | |

DCM4005_0 | $60.00 | 3563 RPM | 6.1 kg·cm | 10 mm | 3.3 kg | — | — |

Product | Motor Properties | Physical Properties | Gearbox Specifications | |||||
---|---|---|---|---|---|---|---|---|

Image | Part Number | Price | Maximum Speed at Rated Voltage | Rated Torque | Shaft Diameter | Weight | Gear Ratio | Gearbox Type |

3261E_1 | $48.00 | 1080 RPM | 240 g·cm | 6 mm | 147 g | 3 ^{12}⁄_{17} : 1 |
Planetary | |

3263E_1 | $50.50 | 78 RPM | 3.1 kg·cm | 6 mm | 193 g | 50 ^{801}⁄_{895} : 1 |
Planetary |