Product Description:

The SRF3756-4996-84-5-56BC-CU is manufactured by Pacific Scientific and belongs to the Permanent Magnet DC Motors series. This permanent-magnet unit converts electrical energy from a direct-current source into rotational motion for industrial automation tasks such as indexing tables or small conveyors, where compact size and straightforward speed control are required. Its permanent-magnet construction gives it a simple DC motor layout with responsive speed adjustment from the applied supply voltage. It is suited to equipment that uses basic armature-voltage control and does not require integrated encoder feedback or complex electronic commutation.

The motor reaches a base speed of 1750 RPM when it receives its nominal armature supply of 90 VDC, allowing shaft speed to be adjusted by changing the applied voltage. At that operating point, the armature draws a continuous line current of 9.5 A and develops a steady output of 36.0 lb-in of torque, which corresponds to 1.0 HP. Heat is removed through a TEFC enclosure that keeps internal parts isolated from airborne contaminants while dissipating losses created by the 0.5 Ω armature resistance and 3.4 mH inductance. The motor uses a 0.6250 in shaft diameter with a 0.188 × 1.38 in key, a 4.500 in pilot diameter, and a 5.875 in mounting bolt circle. Its overall length of 13.25 in supports installation on compact equipment frames.

The winding can momentarily accept 81.0 A for dynamic acceleration without exceeding thermal limits, and each ampere adds torque according to a constant of 4.4 lb-in/A. A standard 56C frame and face mount align the motor with common gearbox or pump adapters. The totally enclosed fan-cooled housing maintains airflow over the lamination stack during sustained duty. This arrangement supports use with standard DC drives that regulate armature voltage and limit overload current. The face-mount format also helps the motor fit common machine interfaces without custom brackets.