AmTecs Cast Iron 75kW 4 Pole Motor – 280SB5 Flange Motor
AmTecs cast iron 75kW 4 pole three-phase electric motor in IEC 280SB5 format, built for heavy-duty industrial service on fans, pumps, blowers, belt drives, and machinery where a standard industrial running speed is preferred. This IE3 motor combines robust cast iron construction with B5 flange mounting, making it a dependable choice for direct machine coupling and installations where flange fixing is preferred.
This version runs at approximately 1486rpm on 50Hz supply and is designed for users who need a reliable flange motor with IP55 protection, Class F insulation, and continuous-duty industrial performance.
Motor Overview
The AmTecs cast iron IE3 range is built for industrial duties where reliability, consistent thermal performance, and mechanical strength are important. This 75kW 4 pole motor uses a 280S IEC frame with B5 mounting, making it a practical option for replacements, OEM builds, and new machinery projects requiring a dependable mechanical fit.
Key Technical Specifications
- Motor Type: 3 phase cast iron electric motor
- Brand: AmTecs
- Power Output: 75kW
- Pole Configuration: 4 pole
- Nominal Speed: 1486rpm
- Efficiency Class: IE3
- Full Load Efficiency: 95%
- Power Factor: 0.87
- Frame Size: 280S
- Mounting Arrangement: B5 – Flange Motor
- Voltage: 400/690V 3 phase 50Hz
- Enclosure Protection: IP55
- Duty Cycle: S1 continuous duty
- Insulation Class: F
- Thermal Protection: PTC thermistors fitted as standard
- Approx. Full Load Torque: 482Nm
- Sound Pressure Level: 73dB(A)
- Weight: 565kg
Why Choose This AmTecs Cast Iron Motor?
- Heavy-duty cast iron build for demanding industrial environments and improved mechanical durability.
- Flange Motor format to suit compatible equipment and installation layouts.
- IE3 efficiency to support reduced running losses in continuous-duty applications.
- IP55 enclosure and Class F insulation for dependable day-to-day industrial service.
- PTC thermistors fitted to support suitable motor protection arrangements.
Typical Applications
This motor is commonly selected for flange-coupled pumps, fans, process equipment, and machinery where a direct flange-mounted installation is required. It is well suited to industrial duties where a robust IEC motor replacement is needed and where the selected pole count matches the required shaft speed.
Internal Links & Compatible Options
Same motor power, different mounting options: jump to the AmTecs Cast Iron 75kW 4 Pole Motor mounting style you need (280S Frame).
Need a different motor power? Explore the closest available motor sizes around 75kW.
More Amtecs motors: Browse all 75kW motors | Browse all Amtecs Cast Iron Motors
At Worm Gear Motors Online we offer competitive prices on genuine AmTecs cast iron 75kW 4 pole motors, with fast UK delivery and expert help choosing the correct frame and mounting style for your application.
Frequently Asked Questions
What kind of machinery suits this motor?
This AmTecs motor is a good fit for industrial systems such as pumps, fans, agitators, belt-driven equipment, and plant machinery where a durable IEC motor is required.
What is the approximate operating speed?
This 4 pole model runs at around 1486rpm on 50Hz power, giving users an industrial motor option for that speed band.
Can I get the same motor in another mounting style?
Yes. Equivalent products within the same power are available in alternative mountings such as B3, B5, and B35 where the frame size allows.
What enclosure rating does the motor have?
The motor has an IP55 enclosure rating to help protect against dust ingress and water spray in general industrial settings.
Is the motor intended for continuous duty?
Yes, the motor is designed for S1 continuous duty, making it suitable for day-to-day running in the correct application.
Can you help with replacement matching?
Yes, we can help compare frame size, power, pole count, and mounting details when you are replacing an existing motor.
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