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RS-977 Brushed DC Motor

RS-977 is a brushed DC motor series for OEM equipment. Compare the installation dimensions and published configurations, then confirm the shaft, winding and loaded working point for your assembly.

Product type: Brushed DC Motor
Motor Length: 69mm(Excluding the Shaft)
Motor Diameter: 52mm(Add Magnet Shield Ring: 54mm Max)
Nominal supply: 7.2 / 12 / 24 V

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Confirm the full model code, selected drawing and operating requirements for your OEM order.

Specifications and Configuration References

Dimensions and Source Customization Ranges

Motor Length:	69mm(Excluding the Shaft)
Motor Diameter:	52mm(Add Magnet Shield Ring: 54mm Max)
Shaft Length:	Custom
Shaft Diameter:	6.35mm
Shaft Type:	Round, D-Cut, Knurling, Thread, Ribbing, etc.
Voltage:	0-36V
Speed:	2000-30000RPM
Torque:	0-1.5N.m

The broad voltage, speed and torque ranges in this legacy source block describe historical customization references. They are not the nominal ratings of one winding, a continuous-duty operating envelope, or a promise that every value or combination is available. Use the complete selected configuration and its agreed test conditions for an order.

Published Winding Configurations

MODEL	VOLTAGE		NO LOAD		AT MAXIMUM EFFICIENCY						STALL
	OPERATING RANGE	NOMINAL	SPEED	CURRENT	SPEED	CURRENT	TORQUE		OUTPUT	EFF	CURRENT	TORQUE
	OPERATING RANGE	NOMINAL	rpm	A	rpm	A	g-cm	mN-m	W	%	A	g-cm	mN-m
HRS-977S-8102	6.0 - 9.0	7.2V CONSTANT	6100	2	5600	6	500	49	28.71	66.5	50.8	6100	597.8
HRS-977S-8698F	9.0 - 15.0	12.0V CONSTANT	13000	2.6	12000	8.5	500	49	61.53	60.3	79.3	6500	637
HRS-977S-4834F	18.0 - 24.0	24.0V CONSTANT	6200	0.9	5550	1.75	500	49	28.46	67.8	9.01	4769	467.4
HRS-977S-7612F	18.0 - 24.0	24.0V CONSTANT	17500	2.5	15600	10	900	88.2	144	60	71.6	8290	812.4

Data is configuration-specific. Confirm the selected winding or gear ratio, test supply, loaded working point and drawing revision before ordering. Maximum-efficiency or stall values are separate reference conditions.

Legacy range note: broad voltage, speed and torque figures below are historical customization references, not the nominal rating or confirmed available operating range of one selected motor. Check the complete winding/configuration and its test conditions.

Motor Length: 69mm(Excluding the Shaft)
Motor Diameter: 52mm(Add Magnet Shield Ring: 54mm Max)
Shaft Length: Custom
Shaft Diameter: 6.35mm
Shaft Type: Round, D-Cut, Knurling, Thread, Ribbing, etc.
Voltage: 0-36V
Speed: 2000-30000RPM
Torque: 0-1.5N.m

Dimensions and Technical Drawings

RS-977 RS-977 technical drawing or performance reference — RS-977 technical drawing or performance reference · Open original image

Match the Configuration to Your Equipment

A model name is the starting point. Share the operating conditions and drawing so the electrical and mechanical configuration can be reviewed together.

Supply voltage and loaded speed/torque
Duty cycle, starting current and thermal conditions
Shaft projection, diameter and mounting holes
Lead wires, connectors and control requirements

Custom Motor Development Quality and Validation

Questions from OEM buyers

How do I request an OEM quotation for RS-977?

Send the complete motor or winding code, supply voltage, loaded speed and torque, duty cycle, installation drawing and expected quantity. Include the shaft, mounting and terminal requirements for your OEM assembly.

Can I select this series by its name alone?

Use the complete winding code and matching drawing. Motors with the same series name can have different windings, shaft details and operating points; confirm the selected version before sample evaluation.

What should be checked before a production order?

Confirm the selected model code, drawing revision and acceptance requirements, then evaluate the sample in the intended equipment and operating conditions.