ZI25A

ZI25A Generative Internal Gear Grinder

The NIDEC ZI25A is a new internal generating gear grinder designed for high-precision, high-speed machining of mid-size gears. Building on the success of the ZI20A, the ZI25A offers increased capacity (up to 250mm external diameter) and enhanced features:

Generative Grinding Technology: Effectively removes thermal treatment-induced distortion from ring gears, ensuring high precision and NVH performance.

Advanced Synchronization: High-speed and high-precision synchronization between the grinding spindle and work table.

Optimized Grinding Performance: Wide crossed axis angle for optimal grinding results.

Efficient Grinding Wheel: Threaded wheel generating grinding wheel with a barrel-like shape for enhanced efficiency.

Precise Wheel Maintenance: On-board dressing system ensures consistent grinding wheel condition.

Cost-Effective Tooling: Collaboration with RWTH Aachen University has resulted in durable grinding wheels that minimize tooling costs.

The ZI25A is ideal for applications in automotive drive units, reducers, robot joints, and more.

Max. workpiece diameter (mm) ⌀200
Module 1 to 3
Grinding wheel diameter (mm) ⌀50 to 120
Grinding wheel head swivel angle (deg) ±40
Grinding wheel speed (min-1) 15,000
Table diameter (mm) ⌀250
Max. table speed (min-1) 6,000
Spindle motor (Cont.) (kW) 25
No of contolled axes 8
Total electric power (kVA) 120
Machine weight (kg) 12,000