New products: 12V versions of the 25D mm metal gearmotors

Our 25D mm metal gearmotors are now available with 12 V motors in three power levels: High-Power (HP 12V) (5.5 A stall), Medium-Power (MP 12V) (2.1 A stall), and Low-Power (LP 12V) (1.1 A stall). The new 12 V LP motor can deliver approximately the same power as its 6 V counterpart, but since the voltage is doubled, it only requires half the current to do so, which means you can control it with lower-current, higher-voltage motor drivers like the DRV8801 or MAX14870 motor driver carriers. At their respective nominal voltages, the 12V HP motor has nearly the same free-run speed as the 6V HP motor, but it produces approximately twice the torque, which in turn means approximately double the output power. The 12V MP motors fall nicely between the 12V LP and HP options, offering a significantly more power than the LPs without the large current draw of the HPs. All five motor variants are the same size, which makes it easy to swap one for another if your design requirements change.

As with our original 6 V options, we have paired these new motors with a variety of gearboxes spanning gear ratios from 4.4:1 through 378:1. The result is 26 new versions, bringing our total selection of 25D mm metal gearmotors to more than 50 options. Unfortunately, we do not have encoder options for the 12 V motors yet, but we should have those later this year.

Rated Voltage	Motor Type	Stall Current @ Rated Voltage	No-Load Speed @ Rated Voltage	Approximate Stall Torque @ Rated Voltage	With Encoder	Without Encoder
6 V	high-power (HP)	6.5 A	9800 RPM	2 oz-in	1:1 HP 6V w/encoder
			2200 RPM	8 oz-in	4.4:1 HP 6V w/encoder	4.4:1 HP 6V
			1000 RPM	17 oz-in	9.7:1 HP 6V w/encoder	9.7:1 HP 6V
			480 RPM	36 oz-in		20.4:1 HP 6V
			285 RPM	60 oz-in	34:1 HP 6V w/encoder	34:1 HP 6V
			210 RPM	80 oz-in	47:1 HP 6V w/encoder	47:1 HP 6V
			130 RPM	130 oz-in	75:1 HP 6V w/encoder	75:1 HP 6V
			100 RPM	160 oz-in	99:1 HP 6V w/encoder	99:1 HP 6V
			57 RPM	260 oz-in		172:1 HP 6V
6 V	low-power (LP)	2.4 A	6100 RPM	1 oz-in	1:1 LP 6V w/encoder
			1400 RPM	5 oz-in		4.4:1 LP 6V
			630 RPM	11 oz-in	9.7:1 LP 6V w/encoder	9.7:1 LP 6V
			300 RPM	24 oz-in		20.4:1 LP 6V
			180 RPM	40 oz-in	34:1 LP 6V w/encoder	34:1 LP 6V
			130 RPM	50 oz-in	47:1 LP 6V w/encoder	47:1 LP 6V
			82 RPM	85 oz-in	75:1 LP 6V w/encoder	75:1 LP 6V
			62 RPM	110 oz-in		99:1 LP 6V
			36 RPM	170 oz-in	172:1 LP 6V w/encoder	172:1 LP 6V
			27 RPM	220 oz-in		227:1 LP 6V
			16 RPM	250 oz-in		378:1 LP 6V
			12 RPM	300 oz-in		499:1 LP 6V
12 V	high-power (HP)	5.5 A	2200 RPM	23 oz-in		4.4:1 HP 12V
			1000 RPM	44 oz-in		9.7:1 HP 12V
			480 RPM	85 oz-in		20.4:1 HP 12V
			285 RPM	120 oz-in		34:1 HP 12V
			210 RPM	165 oz-in		47:1 HP 12V
			130 RPM	240 oz-in		75:1 HP 12V
			100 RPM	300 oz-in		99:1 HP 12V
12 V	medium-power (MP)	2.1 A	1750 RPM	11 oz-in		4.4:1 MP 12V
			800 RPM	22 oz-in		9.7:1 MP 12V
			375 RPM	42 oz-in		20.4:1 MP 12V
			225 RPM	63 oz-in		34:1 MP 12V
			165 RPM	85 oz-in		47:1 MP 12V
			100 RPM	125 oz-in		75:1 MP 12V
			77 RPM	165 oz-in		99:1 MP 12V
			45 RPM	250 oz-in		172:1 MP 12V
			34 RPM	320 oz-in		227:1 MP 12V
12 V	low-power (LP)	1.1 A	1250 RPM	8 oz-in		4.4:1 LP 12V
			570 RPM	15 oz-in		9.7:1 LP 12V
			270 RPM	29 oz-in		20.4:1 LP 12V
			160 RPM	43 oz-in		34:1 LP 12V
			115 RPM	60 oz-in		47:1 LP 12V
			75 RPM	85 oz-in		75:1 LP 12V
			55 RPM	115 oz-in		99:1 LP 12V
			32 RPM	180 oz-in		172:1 LP 12V
			24 RPM	240 oz-in		227:1 LP 12V
			15 RPM	320 oz-in		378:1 LP 12V

Keep in mind that stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. For these gearboxes, the recommended upper limit for instantaneous torque is 200 oz-in (15 kg-cm), and 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) motors; a general recommendation for brushed DC motor operation is 25% or less of the stall current.

Brushed DC motor performance curves.

We list stall torques and currents for our gearmotors because these are end points of approximately linear DC motor performance curves shown above, and with them you can determine how the motor will behave as the voltage or load changes. For more information about how to generate specific performance curves for our gearmotors from the specifications we provide, see the first frequently asked question on any of the motor product pages.