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131:1 Metal Gearmotor 37Dx57L mm

131:1 Metal Gearmotor 37Dx57L mm
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131:1 Metal Gearmotor 37Dx57L mm131:1 Metal Gearmotor 37Dx57L mm131:1 Metal Gearmotor 37Dx57L mm131:1 Metal Gearmotor 37Dx57L mm
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SKU:  PPPOL1107
Part Number:  1107
Brand:  Pololu

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This 2.22" x 1.45" x 1.45" gearmotor is a powerful, high-quality motor with 131:1 metal gearbox intended for operation at 12 V. These units have a 0.61"-long, 6 mm-diameter D-shaped output shaft.

Key specs at 12 V: 80 RPM and 300 mA free-run, 250 oz-in (18 kg-cm) and 5 A stall.

These motors are intended for use at 12 V, though the motor can begin rotating at voltages as low as 1 V.

Gear motor Dimensions:

The face plate has six mounting holes evenly spaced around the outer edge threaded for M3 screws. These mounting holes form a regular hexagon and the centers of neighboring holes are 15.5 mm apart. You can use our custom 37D metal gearmotor bracket (shown in the left picture below) to mount the gearmotor to your project via these mounting holes and the screws that come with the bracket.

Please note that unlike our smaller metal gearmotors, these 37D mm gearmotors have output shafts with a diameter of 6 mm. The Pololu universal aluminum mounting hub for 6mm shafts can be used to mount our larger Pololu wheels (80mm- and 90mm-diameter) or custom wheels and mechanisms to the gearmotor’s output shaft (see the right picture above).

The picture below shows the dimensions (in mm) of the 37D mm line of gearmotors. The value of X is 22 mm for the 19:1 37Dx52L mm and 29:1 37Dx52L mm versions, 24 mm for the 50:1 37Dx54L mm and 67:1 37Dx54L mm versions, and 26.5 mm for the 100:1 37Dx57L mm and 131:1 37Dx57L mm versions.

Warning: Do not screw too far into the mounting holes as the screws can hit the gears. We recommend screwing no further than 3mm (1/8") into the screw hole.

The operational specs listed in the table below were measured at 6 V. At 12 V, the no-load RPM, stall current, and stall torque will all be approximately twice their 6V values. To see the motor specs for 12V operation, please see the short description at the top of this page or this product’s specification tab.

Dimensions

Size: 37D x 57L mm
Weight: 7.3 oz
Shaft diameter: 6 mm

General specifications

Gear ratio: 131:1
Free-run speed @ 6V: 40 rpm1
Free-run current @ 6V: 250 mA1
Stall current @ 6V: 2500 mA1
Stall torque @ 6V: 125 oz·in1
Free-run speed @ 12V: 80 rpm
Free-run current @ 12V: 300 mA
Stall current @ 12V: 5000 mA
Stall torque @ 12V: 250 oz·in

Notes:

1
This motor will run at 6 V but is intended for operation at 12 V.

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