40CrNiMoA Cold Rolling Involute Spline Twin Screw Shaft For ZE52 Double Co-Rotating Extruder

40CrNiMoA Cold Rolling Involute Spline Twin Screw Shaft For ZE52 Double Co-Rotating Extruder

This involute inner spline main shaft fits double co-rotating twin screw extruder ZE52 model. It acts as the core load-bearing carrier for all conveying, mixing and kneading screw elements.

We tailor this shaft to meet high-load plastic compounding production demands. It delivers stable high torque bearing capacity, durable structural strength and precise dimensional accuracy for round-the-clock continuous extrusion work.

1. Multi-grade wear-resistant alloy steel options

   We supply three kinds of pre-hardened alloy steel raw materials. Each material keeps stable mechanical performance under long-time high-temperature extrusion environment. The steel base resists thermal deformation and chemical erosion from plastic additives, fillers and flame retardants.

2. High-precision cold rolling spline forming

   European CNC cold rolling equipment processes all involute spline teeth. Uniform tooth surface structure distributes torque evenly during rotation. Modular screw blocks lock tightly on the shaft without sliding displacement under high-speed heavy load.

3. Uniform vacuum quenching heat treatment

   The whole shaft undergoes sealed vacuum quenching treatment. The shaft body gains consistent hardness without internal stress. It withstands instantaneous torque impact during startup and shutdown, no bending or cracking after long service cycles.

4. Flexible customizable structural design

   We adjust shaft diameter, total length and L/D ratio to match ZE52 extruder barrel parameters. Customers pick solid structure for simple extrusion tasks or hollow cooling structure for high-temperature high-filler production. Modular brick layout supports free collocation of mixing, conveying and devolatilization elements.

Modern twin screw extrusion production runs at higher rotating speed and heavier torque load. Ordinary spline shafts easily wear out and deform under such harsh working conditions. This cold rolling spline shaft solves frequent shutdown maintenance troubles.

Main applicable industries:

• Modified engineering plastic granulation
• Color masterbatch, filler masterbatch production
• Biodegradable plastic compounding
• Recycled plastic reprocessing
• High-filler composite material extrusion
• Replacement spare core shaft for ZE52 double twin screw extruder

We manufacture spline shafts directly in factory workshop. We accept custom processing based on customer’s engineering drawings for non-standard ZE series extruder sizes.

Send your barrel inner diameter, production L/D ratio and daily processing load to technical team. We select matched steel grade and spline size then offer fast quotation.

Using this high-strength spline shaft reduces extruder breakdown frequency and extends the whole machine service life.