RS Pro, 12 V dc, 20000 gcm, Brushed DC Geared Motor, Output Speed 55 rpm

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TW
Product Details

42mm Planetary Geared Motor - 975D Series

Reduction Table (rpm) - 975D
Manufacturer Part No. 4.5V 6V 9V 12V
975D41 500 1800 2700 3600
975D1041 19 69 104 138
975D5041 4 14 21 28

RS Pro 42mm Planetary Geared Motor - 975D Series

From RS Pro, this planetary geared DC motor is made from premium materials, and boasts a high quality construction. As such, it is suitable for use in heavy duty environments.

This DC geared motor uses a brush to deliver current to the motor windings. As such they ensure a a low cost and simplified design, while still offering versatility and reliability. They are ideal for low speed applications that require high starting torque.

The gear motor features a planetary gearhead, with bronze output bearings that guarantees a high torque transfer from the motor through the gearbox.

This 42 mm geared motor is designed for most low voltage applications, and provides a 55 rpm no-load output speed.

Features and Benefits

• 12 V dc Supply Voltage
• Robust units which boast a high quality motor
• Sintered bronze bearings
• High Efficiency


DC geared motors are highly versatile, and are used in many appliances and technologies. Whether you're a hobbyist or industrial manufacturer, this DC electric motor can be used in both model and industrial applications. Typical applications include;

• Prototyping
• Water pumps
• Camera Systems
• Robotics
• Fans

What are the Advantages of a Planetary Gearhead?

A planetary, or elliptical, gear system can bring many advantages to a DC motor. As well as allowing the motor to multiply torque, if can also offer speed reduction to improve system performance and efficiency. Gear heads can also reduce the effects of overshoot by ensuring the motor inertia better matches the load inertia.

What's the Difference Between Brushed and Brushless DC Motors?

Electric motors that use a brush to deliver current to the motor windings have a simpler construction than their brushless equivalents, and are therefore usually lower in cost. They are also able to be wired directly to a DC power source, and have no need for an encoder or drive, which results in more simplified wiring options.

Unfortunately, wear and tear on the brush element means a shorter service life and less efficiency. They are also typically noisier than brushless DC motors.

Why RS Pro?

RS Pro strives to provide you with the choice and reliability you need in your component purchasing. From designing prototypes to finding reliable maintenance solutions, RS Pro can furnish you with the parts you need, when you need them.

Providing high-quality hardware tested by our in-house experts, RS Pro offers you an assurance of quality at competitive prices.

At every stage of the design and manufacturing process, RS Pro is there to support you.

MFA Como Geared Motors

A selection guide for MFA Como Geared Motors available:

Multi-ratio spur geared motors:

Suitable for low torque R&D and education applications
Useful in seeking suitable speeds for applications by selecting the appropriate ratio and/or voltage

Metal single ratio spur geared motors mounted on steel brackets:

Suitable for industrial/modelling applications
Economical and easily accessible

Metal single ratio epicyclic geared motors:

Suitable for industrial/modelling applications
Higher efficiency than spur (can be above 90%)
Smaller size and weight for the same or similar rating
Can be equally efficient in either direction
Co-axial configuration of input and output shafts allows inline installation with motor and machine

Attribute Value
Output Speed 55 rpm
Supply Voltage 12 V dc
Maximum Output Torque 20000 gcm
DC Motor Type Brushed
Shaft Diameter 8mm
Power Rating 41.3 W
Gearhead Type Planetary
Length 111.9mm
Width 44.6mm
Current Rating 5.5 A
Core Construction Iron Core
Series 975D
22 In stock for FREE next working day delivery
Price Each
£ 44.59
(exc. VAT)
£ 53.51
(inc. VAT)
Per unit
1 +
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