Hose Clamp Assembly: Band Tension and Torque
How a worm-drive hose clamp line is specified: band forming and tension, screw thread engagement, the twisting test, and what a run-off checks.
How a hose clamp line is specified
A worm-drive clamp is judged by one thing: it must hold its stated tightening range without the band slipping or the thread stripping. That makes the band width, thickness and material, the screw size and thread, and the torque your twisting test applies the specification — the machine is built around them.
Station sequence
On a linear frame the band arrives in a vibrating tray, is conveyed and held, then coiled to diameter, fitted with the housing, and the screw is tightened. The finished clamp is checked for twisting force before it drops into the tray, so a clamp that would slip in service never reaches packing.
The line runs on SMC, SIEMENS, Panasonic, Keyence, Schneider and BASLER components, with no pollution in the working area. Machines are specified by clamp size rather than by industry, because the same clamp goes on automotive cooling, fuel and air lines, marine and engine connections and building drainage joints.
What decides reject rate
- Band tension. Too little and the clamp slips under torque; too much and the thread strips before the stated range is reached.
- Thread engagement. A screw that enters at an angle cross-threads, and the clamp fails the twisting test even though every dimension is in tolerance.
- Housing orientation. The housing sits one way; a flipped housing changes where the screw bears on the band.
- Band edge finish. A burr on the band edge cuts into the hose it is meant to hold.
What we need from you
- A clamp sample plus the drawing: diameter range, band width, band thickness and material
- Screw size and thread, and the torque the twisting test applies
- How your customer tests the clamp, and the pass limit
- Target cycle time, annual volume and the clamp sizes sharing the line
How the project runs
Quote from drawing, tooling design, build, then run-off with your band and screws in our plant in Chashan, Dongguan. Two years warranty, with professional operation training. Quote normally takes about three working days once the information is complete.
Send a drawing to [email protected] or call +86-18123647785. Related lines: automatic riveting machines, hairpin assembly machines.
Machines for this part: Hose Clamp Assembly Machine — the models we build, with station count and cycle time per line.
Send the drawing for this line. We come back with station layout, cycle time and price.
A quote normally takes three working days once the part information is complete. If something is missing we tell you which drawing is needed instead of guessing a price.
- 012D drawing or STEP file, and the sub-parts
- 02Material and surface finish of each component
- 03Target cycle time, annual volume, shifts per day
- 04The defect you cannot ship — leak, torque, appearance
- 05Bottle neck thread or mating part