Hardev Hydraulics manufactures precision serration rolling machines for DIN 5481 serrated shaft profiles on 4–60mm diameter shafts. Cold-rolled serrations provide superior press-fit strength for steering columns, power tools, bicycle cranks and automotive sub-assemblies.
A serration rolling machine cold-forms sharp-crested serrations (teeth) on the cylindrical surface of a shaft. Unlike splines, serrations are typically used for press-fit interference connections — the serrated shaft is pressed into a matching hub, creating a high-torque, vibration-resistant joint.
The most common standard is DIN 5481 (45° included angle serrations). Cold rolling produces serrations with higher surface hardness, better dimensional consistency and superior press-fit performance compared to milling or knurling.
| HH-SRM Series Serration Rolling Machine | |
|---|---|
| Shaft Diameter Range | 4mm – 60mm |
| Serration Standard | DIN 5481 (primary) |
| Flank Angle | 45° included angle |
| Serration Profile | Sharp-crested (pointed) |
| Machine Type | Two Roll (Hydraulic) |
| Hydraulic Force | 36 Metric Tons |
| Motor Power | 7.5 kW |
| Production Speed | 15 – 50 pcs/min |
| Materials | MS, Alloy Steel, Stainless Steel |
Contact us for availability of custom serration profiles beyond DIN 5481.
Serrations (DIN 5481): press-fit connections, high bite torque.
Splines (DIN 5480): sliding/fixed torque transmission.
Knurling: hand grip, press-fit in soft materials.
Automotive steering shaft-to-wheel hub serration connections in passenger cars and commercial vehicles.
Electric motor armature shaft serrations for angle grinders, drills and other power tools manufactured in India.
Bicycle crankset spindle serrations for press-fit connections — widely used by bicycle manufacturers in Ludhiana.
Windshield wiper motor output shaft serrations for automotive wiper mechanisms.
Serrated shaft connections in automotive seat height and tilt adjustment mechanisms.
Any application requiring a permanent or semi-permanent shaft-to-hub press-fit with high torque transmission.
Share your shaft diameter, serration standard and production volume — we'll send the right machine recommendation with pricing in 24 hours.
