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K20-1800 Rolling Motor

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(K20-1800)
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Achieve High-Speed, Precision Tube Expansion with the KRAIS K20-1800 Rolling Motor

Experience unparalleled efficiency and accuracy in small-diameter tube fabrication with the KRAIS K20-1800, a pneumatic, torque-controlled rolling motor. This lightweight yet powerful tool is expertly engineered for the fast and effortless expansion of tubes in coolers, condensers, and other heat exchangers where precision is paramount.

The K20-1800 is designed for high-volume production environments. Its high-speed 1800 RPM motor significantly reduces cycle times, while the integrated torque control system ensures perfect, uniform results on every roll. The operator simply sets the desired torque, and the motor automatically stops expansion and reverses out of the tube once the target is reached. This intelligent functionality eliminates the risk of over- or under-expansion, guaranteeing a secure, leak-proof seal and protecting the integrity of the tube sheet.

Specifications:
Measurements in:   English  Metric  All
  • Manufacturer: Krais
  • Type: Pneumatic
  • Tube O.D. (in.): 0.375
  • Tube O.D. (mm): 9.5
  • Free Speed (Rpm): 1800
  • Max. Torque (Ft. Lbs): 2.25
  • Min. Torque (Ft. Lbs): 0.166
  • Series: K20
  • Weight (kg): 1.1
  • Weight (lbs.): 2.42
  • Length (in.): 8.07
  • Length (mm): 205
  • Air Use (cfm): 17
  • Air Use L/Min: 480
  • Chuck Opt.: 3/8"
  • Chucks Inc.: 1/4"
  • Max. Torque (Nm): 3.05
  • Min. Torque (Nm): 0.226
  • Square: 3/8"