Save 15% on “active” status Pololu-brand products using code MEMORIALDAY26

227:1 Metal Gearmotor 25Dx56L mm LP 12V

Pololu item #: 3257
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant


Price break Unit price (US$)
1 29.95
5 27.55
25 25.35
100 23.32


backorders allowed

This gearmotor consists of a low-power, 12 V brushed DC motor combined with a 226.76:1 metal spur gearbox. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. This gearmotor is also available with an integrated encoder.

Key specifications:

voltage no-load performance stall extrapolation
12 V 25 RPM, 50 mA 16 kg⋅cm (220 oz⋅in), 0.9 A

Alternatives available with variations in these parameter(s): gear ratio motor type encoders? Select variant…

 Description Specs (19) Pictures (10) Resources (3) FAQs (3) On the blog (0) 爷们儿在线观看 (45) 

Dimensions

Size: 25D x 56L mm1
Weight: 94 g
Shaft diameter: 4 mm2

General specifications

Gear ratio: 226.76:1
No-load speed @ 12V: 25 rpm3
No-load current @ 12V: 0.050 A4
Stall current @ 12V: 0.90 A5
Stall torque @ 12V: 16 kg·cm5
Max output power @ 12V: 1.0 W
No-load speed @ 6V: 13 rpm6
Stall current @ 6V: 0.45 A6
Stall torque @ 6V: 8.0 kg·cm6
Motor type: 12V, 0.9A stall (LP 12V)

Performance at maximum efficiency

Max efficiency @ 12V: 30 %
Speed at max efficiency: 21 rpm
Torque at max efficiency: 2.4 kg·cm
Current at max efficiency: 0.14 A
Output power at max efficiency: 0.53 W

General specifications

Encoders?: N

Notes:

1
Length measurement is from gearbox face plate to back of motor (it does not include the output shaft or motor terminals). See dimension diagram for details.
2
D shaft.
3
Typical; ±20%.
4
Typical, ±50%; no-load current depends on internal friction, which is affected by many factors, including ambient temperature and duration of motor operation.
5
Stalling is likely to damage the gearmotor. Stall parameters come from a theoretical extrapolation of performance at loads far from stall. As the motor heats up, as happens as it approaches an actual stall, the stall torque and current decrease.
6
This motor will run at 6 V but is intended for operation at 12 V.

Related Products

Related Categories

Log In
Pololu Robotics & 爷们儿在线观看
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information 爷们儿在线观看