Pololu 20.4:1 Metal Gearmotor 25Dx65L mm LP 12V with 48 CPR Encoder

Name: Pololu 20.4:1 Metal Gearmotor 25Dx65L mm LP 12V with 48 CPR Encoder
Brand: Pololu
SKU: PO4883
Price: 82.36 USD
Availability: InStock

Item No.: PO4883

HAN: 4883

EAN: 4060137101762

HS Code: 8501109990

Herkunftsland: CN

Lagerstufe: Maintain

82,36 $

per pack

incl. 19% VAT plus (L)

Net: 69,21 $

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Product Description

This gearmotor consists of a low-power, 12 V brushed DC motor combined with a 20.4:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 979.62 counts per revolution of the gearbox’s output shaft. 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 without an 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, 60 mA
stall extrapolation: 2.4 kg?cm (33 oz?in), 0.9 A

Dimensions

Size: 25D x 65L mm (Length measurement is from gearbox face plate to back of encoder cap (it does not include the output shaft))
Weight: 98 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: 0.060 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

Lead length: 8 in (May vary by a few inches.)
Encoders?: Y

Technical documents / Downloads

25D GearmotorDocument (PDF)Download

Dimensions and Weight
Item information	Value
GTIN:	4060137101762
HAN:	4883
Category:	I-Form
No-Load Speed (RPM):	280
Form/Type:	Low-Power (LP)
Shaft:	Single
Encoder:	With
Rated Voltage (V):	12
Gear Ratio:	20.4:1
Dimension (mm):	25D
Stall Torque (kg-cm):	2.4
No-Load Current (A):	0.06
Max Power (W):	1.7
Stall Current (A):	0.9
Shipping weight:	0,17 kg
Item weight:	0,14 kg
Dimensions ( Length × Width × Height ):	6,50 × 2,50 × 2,50 cm

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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/