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19:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion)

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19:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion)

Reference: 0104110000065940

Condition: New product

This gearmotor is a powerful 12V brushed DC motor with a 18.75:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 1200 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

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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 are 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)	Without Encoder	With Encoder
Rated Voltage	Stall Current	No-Load Current	Gear Ratio	No-Load Speed (RPM)	(kg ⋅ cm)	(oz ⋅ in)	Max Power (W)	Without Encoder	With Encoder
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:

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:

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: