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

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.

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