Return Tube Bending Machine | Tube Forming Machine Manufacturer

Return Tube Bending Machine

This return tube bending machine is specially designed for decoiling, straightening, bending, and cutting coil copper tubes into return U bends and crossover C bends, used in air conditioners and heat exchangers.

This return tube bending machine is comprised of coil copper tube pay-off device, straightening device, bending & cutting device, unloading device, hydraulic system, pneumatic system and PLC control system.
For coil copper tubes diameter not more than 9.52mm (3/8”), below 5-head pay-off device will be used, passive drive, without power.

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For return bends, there are other auxiliary machines

Return bends End Reducing / Expanding Machine
Return bends welding ring assembling machine
Return bends cleaning & polishing machine

Technical Data

Suitable copper tube materialTP2
Suitable copper tube reel sizeMax. OD: Ф1100mm; ID: Ф130mm
Suitable copper tube diameterΦ7.0mm / Φ9.52mm
Copper tube numbersMax. 5 pieces
Cycle time< 6s (for U bends)
U bend height error±0.5mm
Length error between two legsLess than 0.5mm
Radius error±0.5mm
Pitch error (center distance between legs)±0.1mm
Straightness errorCurvature ≤3mm @L=1000mm
Flattening ratio at tube endsLess than 5%
Thinning ratio at loop areaLess than 30%
Burr height at two endsLess than 0.2mm
Finishing qualityNo wrinkle, scratch, crack, dimple, bulge
Total electric power5kW