70:1 Metal Gearmotor 37Dx70L mm 24V with 64 CPR Encoder (Helical Pinion)

Pololu item #: 4694
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 51.95
5 47.79
25 43.97
100 40.45


backorders allowed

This gearmotor is a powerful 24V brushed DC motor with a 70:1 metal gearbox and an integrated quadrature encoder with a resolution of 64 counts per revolution (CPR) of the motor shaft and 4480 CPR of the gearbox’s output shaft. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available without an encoder.

Key specifications:

voltage no-load performance stall extrapolation
24 V 140 RPM, 100 mA 31 kg⋅cm (430 oz⋅in), 3 A

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

 Description Specs (22) Pictures (16) Resources (4) FAQs (1) On the blog (0) 

Dimensions

Size: 37D × 70L mm1
Weight: 205 g
Shaft diameter: 6 mm2

General specifications

Gear ratio: 70:1
No-load speed @ 24V: 140 rpm
No-load current @ 24V: 0.1 A
Stall current @ 24V: 3 A3
Stall torque @ 24V: 31 kg·cm3
Max output power @ 24V: 10 W4
No-load speed @ 12V: 72 rpm5
No-load current @ 12V: 0.08 A5
Stall current @ 12V: 1.7 A5
Stall torque @ 12V: 18 kg·cm5
Motor type: 24V

Performance at maximum efficiency

Max efficiency @ 24V: 50 %
Speed at max efficiency: 120 rpm
Torque at max efficiency: 3.9 kg·cm
Current at max efficiency: 0.42 A
Output power at max efficiency: 5.0 W

General specifications

Lead length: 20 cm6
Encoders?: Y
Encoder resolution: 64 CPR

Notes:

1
Length measurement is from gearbox face plate to back of encoder cap (it does not include the output shaft). See dimension diagram for details.
2
D shaft.
3
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.
4
This is the output power at the maximum recommended operating load of 10 kg⋅cm; higher power might be achievable for brief durations at higher loads (see performance graphs in the datasheet).
5
This motor will run at 12 V but is intended for operation at 24 V.
6
May vary by a few centimeters.

Related Products

12V Motor with 64 CPR Encoder for 37D mm Metal Gearmotors (No Gearbox, Helical Pinion)
Pololu Machined Aluminum Bracket for 37D mm Metal Gearmotors
Pololu Stamped Aluminum L-Bracket Pair for 37D mm Metal Gearmotors
Pololu Universal Aluminum Mounting Hub for 6mm Shaft, #4-40 Holes (2-Pack)
Pololu Universal Aluminum Mounting Hub for 6mm Shaft, M3 Holes (2-Pack)
Pololu Aluminum Scooter Wheel Adapter for 6mm Shaft
12mm Hex Wheel Adapter for 6mm Shaft (2-Pack)
12mm Hex Wheel Adapter for 6mm Shaft, Extended (2-Pack)
Pololu Wheel 80×10mm Pair - Black
Pololu Wheel 90×10mm Pair - White
TB9051FTG Single Brushed DC Motor Driver Carrier
VNH5019 Motor Driver Carrier
Pololu G2 High-Power Motor Driver 24v13
Dual TB9051FTG Motor Driver Shield for Arduino
Pololu Dual VNH5019 Motor Driver Shield for Arduino
Pololu Dual G2 High-Power Motor Driver 24v14 Shield for Arduino
High-Power Simple Motor Controller G2 24v12 (Connectors Soldered)
Jrk G2 24v13 USB Motor Controller with Feedback
Jrk G2 21v3 USB Motor Controller with Feedback
Pololu Qik 2s15v9 Dual Serial Motor Controller

Related Categories

24V 37D Metal Gearmotors
37D Metal Gearmotors
Pololu Wheels and Tracks
Brushed DC Motor Controllers
Brushed DC Motor Drivers
Robot Controllers
Current Sensors
25D Metal Gearmotors
20D Metal Gearmotors
Micro Metal Gearmotors
Crimp Connector Housings
0.1″ (2.54 mm) Male Headers
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors