30:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion) View larger

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30:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion)

0104110000065964

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This gearmotor is a powerful 12V brushed DC motor with a 30:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 1920 counts per revolution of the gearbox’s output shaft. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available without an encoder.

Key specifications:

voltage no-load performance stall extrapolation
12 V 540 RPM, 150 mA 8.5 kg⋅cm (120 oz⋅in), 5.5 A


See description for more details about the product.

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Overview

These powerful brushed DC gearmotor are available in a variety of different gear ratios and feature integrated quadrature encoders with 64 counts per revolution (CPR) of the motor shaft. The motor and encoder portion is available by itself (no gearbox), and versions without the encoder are also available.

Rated
Voltage
Stall
Current
No-Load
Current
Gear Ratio No-Load Speed
(RPM)
Extrapolated
Stall Torque
Max Power
(W)


a.jpg

Without Encoder


b.jpg

With Encoder

(kg ⋅ cm) (oz ⋅ in)
12 V






5.5 A






0.15 A






1:1 (no gearbox) 10,000 0.5 7 - - item #4750
19:1 540 8.5 120 12 item #4741 item #4751
30:1 330 14 190 12 item #4742 item #4752
50:1 200 21 290 10 item #4743 item #4753
70:1 150 27 380 10 item #4744 item #4754
100:1 100 34 470 8 item #4745 item #4755
131:1 76 45 630 6 item #4746 item #4756
150:1 67 49 680 6 item #2829 item #2828

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. In order to avoid damaging the gearbox, we recommend keeping continuously applied loads under 10 kg-cm (150 oz-in), and the recommended upper limit for instantaneous torque is 25 kg-cm (350 oz-in). Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes; a general recommendation for brushed DC motor operation is 25% or less of the stall current.


These motors are intended for use at 12 V, though in general, these kinds of motors can run at voltages above and below the nominal voltage (they can begin rotating at voltages as low as 1 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

The gearboxes are composed mainly of spur gears, but they feature helical gears for the first stage for reduced noise and improved efficiency:

c.jpg


37D Gearmotor (Helical Pinion) with the gearbox removed showing the helical pinion gear and first mating gear.


The encoder portion is protected by a black plastic end cap:

d.jpg
e.jpg


The end cap is easily removable if you need to access the encoder or want to slightly reduce the overall gearmotor size, but there is a little bit of base plastic that will remain, as shown in the pictures below:

f.jpg
g.jpg


Specifications

Dimensions

Size: 37D x 68L mm1
Weight: 200 g
Shaft diameter: 6 mm2


General specifications

Gear ratio: 30:1
No-load speed @ 12V: 330 rpm
No-load current @ 12V: 0.2 A
Stall current @ 12V: 5.5 A3
Stall torque @ 12V: 14 kg·cm3
Max output power @ 12V: 12 W
No-load speed @ 6V: 170 rpm4
No-load current @ 6V: 0.15 A4
Stall current @ 6V: 3.0 A4
Stall torque @ 6V: 7.9 kg·cm4
Motor type: 12V


Performance at maximum efficiency

Max efficiency @ 12V: 54 %
Speed at max efficiency: 280 rpm
Torque at max efficiency: 1.8 kg·cm
Current at max efficiency: 0.78 A
Output power at max efficiency: 5.1 W


Notes:

1 Length measurement is from gearbox face plate to back of encoder cap (it does not include the output shaft). See dimension diagram for details.
2 D shaft.
3 Stalling is likely to damage the gearmotor. Stall parameters come from a theoretical extrapolation of performance at loads far from stall. As the motor heats up, as happens as it approaches an actual stall, the stall torque and current decrease.
4 This motor will run at 6 V but is intended for operation at 12 V.
5 May vary by a few centimeters.


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30:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion)

30:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion)

This gearmotor is a powerful 12V brushed DC motor with a 30:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 1920 counts per revolution of the gearbox’s output shaft. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available without an encoder.

Key specifications:

voltage no-load performance stall extrapolation
12 V 540 RPM, 150 mA 8.5 kg⋅cm (120 oz⋅in), 5.5 A


See description for more details about the product.

Add to cart now!

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