Pololu 20.4:1 Metal Gearmotor 25Dx50L mm LP 12V brushed DC motor

Name: Pololu 20.4:1 Metal Gearmotor 25Dx50L mm LP 12V brushed DC motor
Brand: Pololu
SKU: PO3251
Price: 45.13 USD
Availability: InStock

Item No.: PO3251

HAN: 3251

EAN: 4060137102004

HS Code: 8501109990

Herkunftsland: CN

Lagerstufe: Maintain

45,13 $

per pack

incl. 19% VAT plus (L)

Net: 37,93 $

Choose tax zone / country of delivery

Product Description

This gearmotor consists of a low-power, 12 V brushed DC motor combined with a 20.4:1 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: 22×22×22×23 / 12×10×10×10 ? 20.4:1

Key specifications

voltage: 12 V
no-load performance:280 RPM, 50 mA
stall extrapolation:2.4 kg?cm (33 oz?in), 0.9 A

Dimensions

Size:25D x 50L mm(Length measurement is from gearbox face plate to back of motor (it does not include the output shaft or motor terminals).)
Weight:85 g
Shaft diameter:4 mm(D shaft)

General specifications

Gear ratio: 20.4:1
No-load speed @ 12V: 280 rpm(Typical; ±20%)
No-load current @ 12V: 0.050 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: 0.90 A
Stall torque @ 12V: 2.4 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.)
Max output power @ 12V: 1.7 W
No-load speed @ 6V: 140 rpm
Stall current @ 6V: 0.45 A
Stall torque @ 6V: 1.2 kg·cm(This motor will run at 6 V but is intended for operation at 12 V.)
Motor type:12V, 0.9A stall (LP 12V)

Performance at maximum efficiency

Max efficiency @ 12V: 43 %
Speed at max efficiency: 230 rpm
Torque at max efficiency: 0.35 kg·cm
Current at max efficiency: 0.16 A
Output power at max efficiency: 0.84 W

General specifications

Encoders?: N

Technical documents / Downloads

25D GearmotorDocument (PDF)Download

Dimensions and Weight
Item information	Value
GTIN:	4060137102004
HAN:	3251
Category:	I-Form
No-Load Speed (RPM):	280
Form/Type:	Low-Power (LP)
Shaft:	Single
Encoder:	Without
Rated Voltage (V):	12
Gear Ratio:	20.4:1
Dimension (mm):	25D
Stall Torque (kg-cm):	2.4
No-Load Current (A):	0.05
Max Power (W):	1.7
Stall Current (A):	0.9
Shipping weight:	0,10 kg
Item weight:	0,08 kg
Dimensions ( Length × Width × Height ):	5,00 × 2,50 × 2,50 cm

Write the first review for this item and help others make a purchase decision!

25D Gearmotor

This File includes

Dimension diagram of the Pololu 25D Metal Gearmotors (pdf)
3D models of 64D mm gearmotors (zip)
Modifying the Wild Thumper to use motors with encoders (pdf)

25D Gearmotor

Manufacturer according to GPSR
Pololu Corporation, Pilot Rd. 920, 89119 Las Vegas, Nevada, Vereinigte Staaten, [email protected], https://www.pololu.com/