Specifications

• Availability 0 pcs
• Brand VEM
• Item Number K21R250M8-4B3 VEM
• Category 2-Speed Motors

Weight and Dimensions

• Weight (kg) 375

Product Properties

• Rated power (kW) 48
• Speed at 50Hz (rpm) 2 Speeds
• Frequency 50/60 Hz
• Energy efficiency Not applicable
• Mounting B3 / 1M1001 (foot)
• Brake No Brake
• IP Class IP55
• Explosion safety (Atex) No protection
• IEC Framesize 250

Detailed Product Properties

• Voltage 380-400VD / 660-690VY
• IEC Framesize 250
• Shaft diameter (mm) 60
• Housing material Cast Iron
• AC/DC AC
• Standard IEC
• Shaft height IEC in JDE 250
• Shaft length (mm) 140
• Shaft key width (mm) 18
• Shaft key length (mm) 125
• Thread shaft bore M20
• Shaft height, B3 mounted (mm) 250
• Width foot holes, B3 mounted (mm) 406
• Length foot holes, B3 mounted (mm) S=286, M=311
• Diameter foot holes (mm) 24
• Outer diameter flange B5/V1/B35/V3 (mm) 550
• Spigot B5/V1/B35/V3 (mm) 450
• Pitch circle diameter B5/V1/B35/V3 (mm) 500
• Number of flange holes 8
• Diameter flange holes B5/V1/B35/V3 (mm) 18.5