Brook Crompton 225S/M Flange Mounted 3-Phase AC Induction Motor

The Brook Crompton 3-phase AC induction motor, serial number 656565, is a reliable industrial-grade electric motor manufactured in Guisley, Leeds, United Kingdom. Built to comply with IEC 60034, this unit is engineered for continuous duty and designed to deliver dependable mechanical power in industrial applications.

This motor operates at 415 V (50 Hz) or 460 V (60 Hz) and supports both 50 Hz and 60 Hz frequency operations. Its speed is rated at ~1480 RPM @ 50 Hz and ~1780 RPM @ 60 Hz, classifying it as a 4-pole motor. It draws a nominal current of 52.4 A under standard load and includes a 1.15 service factor, enabling brief overload conditions without exceeding thermal limits.

The motor is equipped with deep groove ball bearings (6312-C3) on both the drive end (DE) and non-drive end (NDE), offering high tolerance to heat and mechanical stress. The IP55 enclosure provides effective dust ingress protection and resistance to water jets, while TEFC cooling (Totally Enclosed Fan Cooled) ensures reliability under harsh operating conditions.

Featuring a 225S/M frame size and B5 flange mounting, this motor is ideal for direct coupling in industrial machines such as pumps, fans, compressors, and conveyors.

Specifications:

– Manufacturer: Brook Crompton (Part of Invensys Corporation)
– Country of Origin: Guisley, Leeds, United Kingdom
– Serial Number: 656565
– Motor Type: 3-Phase AC Induction Motor
– Voltage Rating:
 • 415 V @ 50 Hz
 • 460 V @ 60 Hz
– Frequency: 50 Hz / 60 Hz
– Current Draw: 52.4 A
– Rated Speed:
 • ~1480 RPM @ 50 Hz
 • ~1780 RPM @ 60 Hz
– Frame Size: 225S/M
– Mounting Type: B5 (Flange Mounted)
– Enclosure Rating: IP55 (Dust protected, water-jet resistant)
– Cooling Method: TEFC (Totally Enclosed Fan Cooled – inferred)
– Service Factor: 1.15
– Insulation Class: F
– Bearing Details:
 • Drive End (DE): 6312-C3
 • Non-Drive End (NDE): 6312-C3
– Bearing Type: Deep groove ball bearing, C3 clearance
– Standard Compliance: IEC 60034
– Design Intent: High-reliability industrial motor for heavy-duty operations
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