Pololu 99:1 Metal Gearmotor 25Dx54L mm HP 12V brushed DC motor

Pololu 99:1 Metal Gearmotor 25Dx54L mm HP 12V brushed DC motor

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SKU: PO3207
GTIN: 4060137102110
Category: I-Form
Manufacturers: Pololu
MPN: 3207
Storage Tiers: Maintain

This gearmotor consists of a high-power, 12 V brushed DC motor combined with a 98.78:1 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.

Exact gear ratio: 22×22×22×22×22×23 / 12×10×10×10×10×10 ? 98.78:1

Key specifications

voltage: 12 V
no-load performance:100 RPM, 250 mA
stall extrapolation:29 kg?cm (400 oz?in), 5.0 A

Dimensions

Size:25D x 54L mm(Length measurement is from gearbox face plate to back of motor (it does not include the output shaft or motor terminals).)
Weight:91g
Shaft diameter:4 mm(D shaft)

General specifications

Gear ratio: 98.78:1
No-load speed @ 12V: 100 rpm(Typical; ±20%)
No-load current @ 12V: 0.25 A(Typical, ±50%; no-load current depends on internal friction, which is affected by many factors, including ambient temperature and duration of motor operation.)
Stall current @ 12V: 5.0 A
Stall torque @ 12V: 29 kg·cm(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.)
No-load speed @ 6V: 50 rpm
Stall current @ 6V: 2.5 A
Stall torque @ 6V: 15 kg·cm(This motor will run at 6 V but is intended for operation at 12 V.)
Motor type: 12V, 5.0A stall (HP 12V)

Performance at maximum efficiency

Max efficiency @ 12V: 36 %
Speed at max efficiency: 87 rpm
Torque at max efficiency: 4.5 kg·cm
Current at max efficiency: 0.94 A
Output power at max efficiency: 4.0 W

General specifications

Encoders?: N

Storage Tiers:	Maintain
Dimension (mm):	25D
Form/Type:	High-Power (HP)
Encoder:	Without
Stall Current (A):	5
Stall Torque (kg-cm):	29
Rated Voltage (V):	12
Gear Ratio:	99:1
Shaft:	Single
No-Load Speed (RPM):	100
No-Load Current (A):	0.25
Shipping weight:	0,11 kg
Item weight:	0,09 kg
Dimensions ( Length × Width × Height ):	5,40 × 2,50 × 2,50 cm