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- Product Code: Pololu-995
- MPN: 995
These tiny brushed DC gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and with five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. The 6 V and 12 V HPCB motors 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 6 V HPCB and 6 V HP motors are identical except for their brushes, which only affect the lifetime of the motor.
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).
Details for item #995
Exact gear ratio: 25×34×37×35×3812×10×10×14×10≈248.98:125×34×37×35×3812×10×10×14×10≈248.98:1
This gearmotor is a miniature high-power, 6 V brushed DC motor with a 248.98:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.
|voltage||no-load performance||stall extrapolation|
|6 V||120 RPM, 70 mA||3.4 kg⋅cm (47 oz⋅in), 1.6 A |
|Size:||10 × 12 × 26 mm1|
|Shaft diameter:||3 mm2|
|No-load speed @ 6V:||120 rpm|
|No-load current @ 6V:||0.07 A|
|Stall current @ 6V:||1.6 A|
|Stall torque @ 6V:||3.4 kg·cm|
|Max output power @ 6V:||1.1 W|
|Extended motor shaft?:||N|
|Motor type:||1.6A stall @ 6V (HP 6V)|
Performance at maximum efficiency
|Max efficiency @ 6V:||32 %|
|Speed at max efficiency:||100 rpm|
|Torque at max efficiency:||0.55 kg·cm|
|Current at max efficiency:||0.30 A|
|Output power at max efficiency:||0.59 W|
1. Output shaft adds 9 mm to the 26 mm length.
2. D Shaft.