Wheel:

• heat-treatable steel, machined, hardness 190–230 HB
• lightly-oiled surface
• 3° taper tread to axle
• extremely low rolling resistance
• extremely high static and dynamic load capacity

Other features:

• chemical resistance to many aggressive substances
• operating temperature:
  ball bearing version: -20 °C to +120 °C
  heat-resistant ball bearing version: -30 °C to +300 °C, load capacity reduced by 50% at +300 °C
• the load capacities provided in the table refer to the allocation of flanged wheels to rail profiles in accordance with DIN 536 specified below (crane rail standard):
  SPKVS 50K–SPKVS 200K: A45
  SPKVS 250K: A55
  SPKVS 300K–SPKVS 400K: A65

• electrical conductivity (ohmic resistance) ≤ 10⁴ Ω