55 kW 1000 rpm Cast Iron Frame Electric Motor 280M-6

55 kW 1000 rpm Cast Iron Frame Electric Motor 280M-6, a HEM Motor three-phase asynchronous motor rated 55 kW / 75 HP. Its robust cast iron frame makes it suitable for dusty, humid and heavy-duty conditions.

Electrical data

Rated power

55 kW / 75 HP

Rated speed

985 rpm

Power factor (cos φ)

0.86

Rated current 380 V / 400 V / 415 V

103 A / 98.1 A / 94.6 A

Rated torque (Mn)

533.2 Nm

Starting torque / rated torque (Ts/Tn)

2.0

Breakdown torque / rated torque (Tmax/Tn)

2.0

Starting current / rated current (Is/In)

7.3

Voltage

400/690 V (Δ/Y)

Frequency

50 Hz

Mechanical features

Model code

280M-6

Frame

Cast iron (GG20)

IEC frame size

280M

Shaft height (H)

280 mm

Cable entry

2 × M63×1.5

Protection class

IP55

Insulation class

F (155 °C)

Temperature rise

Class B (80 K)

Cooling

IC 411, surface cooling by the fan on the frame

Winding

100% copper

Shaft material

C45 carbon steel

Vibration

≤ 1.8 mm/s

Noise

58–75 dB(A)

Applications: heavy-duty conveyors, mills, crushers and machines needing high torque at low speed. For dimensioned drawings, see the technical drawings; for all values, see the technical catalogue.

55 kW 1000 rpm Cast Iron Motor – View

Model: 280M-6

Other options at the same power

• 55 kW 1500 rpm Cast Iron Frame Electric Motor 250M-4
• 55 kW 3000 rpm Cast Iron Frame Electric Motor 250M-2

55 kW Cast Iron Frame Motor – Details

Model: 280M-6

Technical comparison

• Current: 98.10 A at 400 V, about 716 A at start (1.78 A per kW). Compare with other ratings
• Torque: rated 533.2 Nm, about 1,066.4 Nm at start. Same power: 176.9 Nm at 3000 rpm, 353.7 Nm at 1500 rpm, 533.2 Nm at 1000 rpm. Torque table
• 280M frame: shaft height 280 mm; same frame: 90 kW 1500 rpm, 90 kW 3000 rpm. Frame – power table

Frequently Asked Questions

How many amps does a 55 kW 1000 rpm motor draw?

On a 400 V supply it draws about 98.1 A at full load.

Will it replace my old motor?

If your old motor also has an IEC 280M frame, that is the first piece of information for assessing mounting compatibility. To confirm the fit, compare the mounting type, shaft diameter and length, foot hole spacing, flange dimensions if any, as well as power, speed and electrical data. Send photos of your current motor’s nameplate and connections on WhatsApp and we will confirm the right model.

How can I order?

Fill in the order form above and send it via WhatsApp, or call +90 532 345 49 86.