10:1 Micro Metal Gearmotor HPCB 6V with 12 CPR Encoder, Side Connector

Our Micro Metal Gearmotor family consists of tiny brushed DC metal gearmotors with nitride-hardened martensitic stainless steel gears in a wide range of gear ratios, motor windings, brushes, and encoder configurations:

Micro Metal Gearmotor next to a US quarter dollar for size reference.

The following comparison table shows basic specifications for all of the available versions (see the Micro Metal Gearmotor datasheet (5MB pdf) for additional information, including detailed performance graphs):

Rated Voltage	Stall Current	No-Load Current	No-Load Speed (RPM)	Extrapolated Stall Torque		Max Power (W)	Approx Gear Ratio	No Encoder	w/ Extended Motor Shaft	w/ Encoder, Back Conn.	w/ Encoder, Side Conn.
				(kg⋅cm)	(oz⋅in)
HPCB 12V (high-power, carbon brushes)
12 V	0.75 A	100 mA	6800	0.09	1.3	–	5:1	#3036	#3047	#5204	#5205
		80 mA	3400	0.17	2.4	1.5	10:1	#3037	#3048	#5206	#5207
			2200	0.25	3.5	1.4	15:1	#4788	#4789	#5208	#5209
			1100	0.39	5.4	1.1	30:1	#3038	#3049	#5210	#5211
			650	0.67	9.3	1.1	50:1	#3039	#3050	#5212	#5213
			450	1.0	14	1.1	75:1	#3040	#3051	#5214	#5215
			330	1.3	18	1.1	100:1	#3041	#3052	#5216	#5217
			220	1.8	25	1.0	150:1	#3042	#3053	#5218	#5219
			160	2.5	35	1.0	210:1	#3043	#3054	#5220	#5221
			130	3.0	42	1.1	250:1	#3044	#3055	#5222	#5223
			110	3.3	46	1.0	298:1	#3045	#3056	#5224	#5225
			85	5.0	69	1.1	380:1	#4798	#4799	#5226	#5227
			35	10	140	–	1000:1	#3046	#3057	#5228	#5229
Rated Voltage	Stall Current	No-Load Current	No-Load Speed (RPM)	Extrapolated Stall Torque		Max Power (W)	Approx Gear Ratio	No Encoder	w/ Extended Motor Shaft	w/ Encoder, Back Conn.	w/ Encoder, Side Conn.
				(kg⋅cm)	(oz⋅in)
HPCB 6V (high-power, carbon brushes)
6 V	1.5 A	170 mA	6500	0.09	1.3	–	5:1	#3060	#3082	#5178	#5179
		150 mA	3300	0.17	2.4	1.3	10:1	#3061	#3071	#5180	#5181
			2100	0.25	3.5	1.3	15:1	#4786	#4787	#5182	#5183
			1100	0.45	6.2	1.2	30:1	#3062	#3072	#5184	#5185
			650	0.74	10	1.2	50:1	#3063	#3073	#5186	#5187
			430	1.1	15	1.3	75:1	#3064	#3074	#5188	#5189
			330	1.6	22	1.3	100:1	#3065	#3075	#5190	#5191
			220	2.0	28	1.1	150:1	#3066	#3076	#5192	#5193
			160	2.8	39	1.1	210:1	#3067	#3077	#5194	#5195
			130	3.2	44	1.1	250:1	#3068	#3078	#5196	#5197
			110	3.4	47	1.0	298:1	#3069	#3079	#5198	#5199
			85	5.0	69	1.1	380:1	#4796	#4797	#5200	#5201
			33	11	150	–	1000:1	#3070	#3080	#5202	#5203
Rated Voltage	Stall Current	No-Load Current	No-Load Speed (RPM)	Extrapolated Stall Torque		Max Power (W)	Approx Gear Ratio	No Encoder	w/ Extended Motor Shaft	w/ Encoder, Back Conn.	w/ Encoder, Side Conn.
				(kg⋅cm)	(oz⋅in)
HP 6V (high-power)
6 V	1.6 A	120 mA	6100	0.11	1.5	–	5:1	#1000	#2210	#5152	#5153
		100 mA	3100	0.22	3.0	1.6	10:1	#999	#2211	#5154	#5155
			2000	0.30	4.2	1.5	15:1	#4784	#4785	#5156	#5157
			1000	0.57	7.9	1.5	30:1	#1093	#2212	#5158	#5159
			590	0.86	12	1.3	50:1	#998	#2213	#5160	#5161
			410	1.3	18	1.4	75:1	#2361	#2215	#5162	#5163
			310	1.7	24	1.3	100:1	#1101	#2214	#5164	#5165
			210	2.4	33	1.2	150:1	#997	#2386	#5166	#5167
			150	3.0	42	1.1	210:1	#996	#2216	#5168	#5169
			120	3.4	47	1.1	250:1	#995	#2217	#5170	#5171
			100	4.0	56	1.1	298:1	#994	#2218	#5172	#5173
			84	5.5	76	1.1	380:1	#4794	#4795	#5174	#5175
			31	12	170	–	1000:1	#1595	#2373	#5176	#5177
Rated Voltage	Stall Current	No-Load Current	No-Load Speed (RPM)	Extrapolated Stall Torque		Max Power (W)	Approx Gear Ratio	No Encoder	w/ Extended Motor Shaft	w/ Encoder, Back Conn.	w/ Encoder, Side Conn.
				(kg⋅cm)	(oz⋅in)
MP 6V (medium-power)
6 V	0.67 A	80 mA	4400	0.06	0.8	–	5:1	#2362	#2376	#5126	#5127
		70 mA	2200	0.11	1.5	–	10:1	#2363	#2377	#5128	#5129
			1400	0.20	2.8	0.70	15:1	#4782	#4783	#5130	#5131
			720	0.33	4.6	0.57	30:1	#2364	#2378	#5132	#5133
			420	0.54	7.5	0.55	50:1	#2365	#2379	#5134	#5135
			290	0.78	11	0.54	75:1	#2366	#2380	#5136	#5137
			220	0.94	13	0.50	100:1	#2367	#2381	#5138	#5139
			150	1.3	18	0.48	150:1	#2368	#2382	#5140	#5141
			100	1.7	24	0.46	210:1	#2369	#2383	#5142	#5143
			88	2.2	31	0.48	250:1	#2370	#2384	#5144	#5145
			73	2.4	33	0.44	298:1	#2371	#2385	#5146	#5147
			57	3.6	50	0.53	380:1	#4792	#4793	#5148	#5149
			22	6.7	93	–	1000:1	#2372	#3059	#5150	#5151
Rated Voltage	Stall Current	No-Load Current	No-Load Speed (RPM)	Extrapolated Stall Torque		Max Power (W)	Approx Gear Ratio	No Encoder	w/ Extended Motor Shaft	w/ Encoder, Back Conn.	w/ Encoder, Side Conn.
				(kg⋅cm)	(oz⋅in)
LP 6V (low-power)
6 V	0.36 A	50 mA	2500	0.05	0.7	–	5:1	#1100	#2200	#5100	#5101
		40 mA	1300	0.10	1.4	–	10:1	#1099	#2201	#5102	#5103
			860	0.17	2.4	0.37	15:1	#4780	#4781	#5104	#5105
			450	0.29	4.0	0.31	30:1	#993	#2202	#5106	#5107
			270	0.44	6.1	0.29	50:1	#1098	#2203	#5108	#5109
			180	0.64	8.9	0.29	75:1	#2360	#2209	#5110	#5111
			130	0.74	10	0.25	100:1	#992	#2204	#5112	#5113
			90	1.1	15	0.25	150:1	#1097	#2205	#5114	#5115
			65	1.6	22	0.25	210:1	#1096	#2206	#5116	#5117
			54	1.7	24	0.23	250:1	#1095	#2207	#5118	#5119
			45	2.0	28	0.22	298:1	#1094	#2208	#5120	#5121
			36	2.9	40	0.27	380:1	#4790	#4791	#5122	#5123
			13	5.5	76	–	1000:1	#1596	#3058	#5124	#5125

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. The recommended upper limit for instantaneous torque is 2.5 kg⋅cm (35 oz⋅in) for the 380:1 and 1000:1 gearboxes, and 2 kg⋅cm (25 oz⋅in) for all the other gear ratios; we strongly advise keeping applied loads well under this limit. Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes, especially for the versions that use high-power (HP and HPCB) motors; a general recommendation for brushed DC motor operation is 25% or less of the stall current.

In general, these kinds of motors can run at voltages above and below their nominal voltages; lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

Motor windings/brush options

The 6V and 12V HPCB motors have long-life carbon brushes, and they offer the same performance at their respective nominal voltages, just with the 12 V motor drawing half the current of the 6 V motor. The 6V HP, MP, and LP motors have shorter-life precious metal brushes, which are generally lower-friction than carbon brushes and preferred for lower-current applications. The HPCB versions (shown on the left in the picture below) can be differentiated from versions with precious metal brushes (shown on the right) by their copper-colored terminals. Note that the HPCB terminals are 0.5 mm wider than those on the other Micro Metal Gearmotor versions (2 mm vs. 1.5 mm), and they are about 1 mm closer together (6 mm vs. 7 mm).

Micro Metal Gearmotor HPCB long-life carbon brushes (left) next to Micro Metal Gearmotor HP precious metal brushes (right).

Encoder options

Micro Metal Gearmotor (standard version without encoder or extended motor shaft).

Micro Metal Gearmotor with 12 CPR encoder, back connector (cable not included).

Micro Metal Gearmotor with 12 CPR encoder, side connector (cable not included).

Micro Metal Gearmotor with extended motor shaft.

In addition to standard versions that are not intended for use with encoders, we have versions of our Micro Metal Gearmotors available with integrated 12 CPR quadrature encoders on the motor shafts (i.e. on the inputs to the gearbox). These are available in two styles—back connector and side connector—and work with our assortment of 6-pin JST SH-style cables and 6-pin JST SH-style connector boards (cables are not included). A plastic snap-on housing covers the encoder disc and electronics.

We also have motor versions available with an extended motor shaft for adding your own encoder. This 1 mm diameter shaft extends 4.5 mm from the rear of the motor and rotates at the same speed as the input to the gearbox. These versions work with our separately available encoders for Micro Metal Gearmotors.

Gearbox options

The table below shows the exact gear ratios for our Micro Metal Gearmotors. All gearboxes have the same overall dimensions except for 1000:1, which is 3.5 mm longer than the others. The gearboxes use brass plates on all versions except 380:1, which has steel plates for increased durability and resistance to wear from radial loads.

Micro Metal Gearmotor size comparison of 1000:1 (bottom) vs other gear ratios (top).

Please note that the higher gear ratios can generate enough torque to damage themselves if exposed to loads beyond what they are rated for (25 kg⋅mm for 1000:1 and 380:1, 20 kg⋅mm for everything else). The point of these higher gear ratios is not to deliver more overall torque but rather to allow for slower speeds at a given voltage and to draw less current for a given torque within its rated operating range.

Dimensions

Our Micro Metal Gearmotors all have gearboxes with a 10 × 12 mm cross section and a 9 mm-long, 3 mm-diameter D-shaped gearbox output shaft. The gearbox length is the same for all gear ratios except 1000:1, which is 3.5 mm longer than the others. On versions without an encoder, the motor fits entirely within the 10 × 12 mm gearbox cross section. The two encoder options fit within the gearbox cross section on the side opposite the connector and extend past it by 3 mm or 4 mm on the connector side, depending on the connector orientation; for the other two sides, the encoder extends past the gearbox cross section by 0.25 mm.

In terms of size, these gearmotors are very similar to Sanyo’s popular 12 mm NA4S DC gearmotors, and gearmotors with this form factor are sometimes also referred to as N20 motors. The versions with carbon brushes (HPCB) have slightly different terminal and end-cap dimensions than the versions with precious metal brushes, but all of the other dimensions are identical.

See our detailed dimension diagrams (635k pdf) for more information.

Details for item #5181

Micro Metal Gearmotor with 12 CPR encoder, side connector.

Gearmotor details:

Key specifications:

Exact gear ratio: 35×3713×10≈9.96:135×3713×10≈9.96:1

Using the encoder

This gearmotor includes an integrated two-channel incremental Hall effect encoder that senses the rotation of a magnetic disk on a rear protrusion of the motor shaft. The quadrature encoder provides a resolution of 12 counts per revolution (CPR) of the motor shaft when counting both edges of both channels. To compute the counts per revolution of the gearbox output, multiply 12 by the gearbox reduction factor. For example, for a 50:1 gearbox, the encoder would provide approximately 617 CPR of the gearbox output shaft (see exact gear ratios above).

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Micro Metal Gearmotor with 12 CPR encoder, side connector.

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