Two Roll and Three Roll hydraulic thread rolling machines for M3–M75. Cold-form external threads with 30% higher strength, superior surface finish and zero material waste. ISO 9001:2015 certified by Hardev Hydraulics, Ludhiana.
A thread rolling machine produces external threads by cold-forming — pressing hardened die rolls against a rotating cylindrical blank. Unlike cut threading, rolling displaces metal, creating threads that are 30% stronger, burr-free and dimensionally consistent.
Hardev Hydraulics has manufactured thread rolling machines in Ludhiana, Punjab since 1959. Our machines serve fastener manufacturers, auto-component plants, construction companies and defence suppliers across India.
All models feature hydraulic closed-loop pressure control, hardened EN31 steel die rolls, and PLC-based automatic stroke adjustment. Built to DIN/ISO threading standards.
Hydraulic two-roll cylindrical die machine for precision external threading of bolts, studs and fasteners up to M45. Ideal for medium to high-volume production.
| Thread Range | M3 – M45 |
| Max Pitch | 4.5 mm |
| Hydraulic Force | 36 Metric Tons |
| Hydraulic Power | 5.5 kW |
| Motor Power | 7.5 kW |
| Spindle Speed | 20 – 120 RPM |
| Production Speed | 20 – 65 pcs/min |
Planetary three-roll die machine for large-diameter threads up to M75. Delivers uniform radial force for superior thread concentricity on heavy studs and anchor bolts.
| Thread Range | M10 – M75 |
| Hydraulic Force | 22 Metric Tons |
| Motor Power | 5.5 kW |
| Production Speed | 15 – 45 pcs/min |
| Thread Standards | ISO, DIN, BSP, UNC/UNF |
High-speed flat die series for small fasteners. Two flat hardened dies — one fixed, one reciprocating — roll threads at 150–320 pcs/min. The fastest production option in our range. Motor: 4.0 kW.
Cold working during rolling hardens the thread surface, producing threads with 30–40% higher fatigue strength versus cut threading.
Rolled threads achieve Ra 0.4–0.8 µm — far smoother than cut threads — reducing friction and improving fastener performance.
Thread rolling displaces metal rather than cutting it. No chips, no coolant contamination, lower material cost per piece.
Up to 320 pcs/min on flat die machines — 5–10× faster than CNC thread cutting for the same part.
Hydraulic closed-loop pressure control maintains thread pitch and depth consistency across entire production runs.
Hardened EN31 alloy steel rolls last 100,000–300,000 pieces per grind. Rolls can be reground multiple times.
| Parameter | Thread Rolling (Hardev Hydraulics) | Conventional Cut Threading |
|---|---|---|
| Thread Strength | 30–40% stronger | Base strength |
| Surface Finish | Ra 0.4–0.8 µm | Ra 1.6–3.2 µm |
| Material Waste | Zero — metal displaced | Chips lost as waste |
| Production Speed | 20–320 pcs/min | 2–20 pcs/min |
| Tooling Life | 100k–300k pcs/grind | 500–5,000 pcs |
| Thread Range | M2 – M75 | M1 – M200+ |
| Investment Cost | Higher upfront | Lower upfront |
| Per-Piece Cost (volume) | Lower | Higher |
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