Overhaul and Repair Services for Werner and Pfleiderer (W and P) ZSK70 Coperion Extruder Gearboxes (11.5 Nm/cm³ Specific Torque)
We provide comprehensive solutions for twin-screw extruder gearboxes, including custom manufacturing, professional overhaul, preventive maintenance and direct replacement of identical-specification or equivalent-performance transmission gearboxes.
We have successfully completed numerous repair and replacement projects for gearboxes manufactured by leading German and Japanese twin-screw extruder original equipment manufacturers (OEMs). Our service coverage includes:
- Werner and Pfleiderer (W and P)
- Coperion
- Toshiba
- JSW
- Kobe Steel (KOBE)
- Leistritz
- Maris
- PIV Drives
- Eisenbeiss
- among others.
ZSK70 Gearbox technical data
| Parameter |
Value |
| Output Speed |
900 rpm |
| Input Speed |
2276 rpm |
| Screw Diameter |
70 mm |
| Center Distance |
58.5 mm |
| Single Shaft Torque |
1500 N·m |
| Specific Torque |
11.5 Nm/cm³ |
| Drive Motor Power |
429 kW |
| Designed Service Life of Gearbox |
72000 hours |
| Gear Material |
20CrNi2Mn |
| Original Manufacturer |
Flender |
Our Competitive Advantages
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Industry-Leading Performance Level
Performance equivalent to that of international leading brands including German Flender, Austrian Eisenbeiss, W and P, Berstorff, Leistritz, JSW and Toshiba.
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High Specific Torque
Maximum specific torque up to 15 Nm/cm³.
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Superior Precision Retention
Radial bearings on output shafts are theoretically free of radial load due to the symmetrical drive design, ensuring consistent precision over long-term continuous operation.
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Extended Service Life
Designed service life up to 72000 hours (approximately 10 years under normal operating conditions).
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High Operating Speed
Maximum input speed up to 1750 rpm.
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Excellent Processing Quality
Tight screw clearance reduces material backflow, shortens material residence time in barrels and minimizes excessive shear, ensuring uniform product quality.
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High Production Efficiency
Extruders equipped with our gearboxes can achieve 1 to 2 times higher output compared with low-torque extruders of the same screw diameter.
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Premium Component Configuration
All bearings are sourced from international first-tier brands: Sweden SKF and Germany INA. Oil seals are imported from Germany.
About us
We are dedicate to develop, design, and manufacture co-rotation, counter-rotation parallel twin-screw extruder production line.Our extruders have the advantages of “high torque, high efficiency, low energy-consumption, high price/performance ratio, long service life " (designed service life of gearbox as long as 72000 hrs). We keep the same step with the most advanced extruder manufaturers in the world.
We can supply :Twin screw extruder production line;
High torque gearbox;Automatic long fiber reinforced thermoplastic composites (LFT - D) production line;Counter-rotation parallel twin screw extruder;Differential concentration mixer;
Repairing and machining large parts; Design, machine all of screw elements on Japan and Germany extruders.
