Reishauer RZP 400 Gear Grinding Machine
Key Specifications
Max Gear Diameter
Module Range
Gear Type
Max Face Width
Max Helix Angle
Grinding Wheel Spindle Speed
Overview
The Reishauer RZP 400 is a continuous generating gear grinding machine designed for medium-to-large gears up to 400mm pitch diameter in the automotive, heavy truck, and industrial gearbox markets. The RZP 400 uses Reishauer's established threaded grinding wheel process where the wheel continuously generates the involute gear tooth profile through a synchronized helical motion. This continuous generation method is significantly faster than profile grinding for high-volume production. The machine handles modules 1 to 8 and external spur and helical gears. Reishauer integrates topographic correction capability for managing gear geometry deviations and noise optimization. The two-wheel spindle with automatic dressing ensures consistent wheel geometry throughout the production run. The RZP 400 is designed for automotive transmission gear production and is typically installed in cells with gear hobbers and hard turning machines.
Full Specifications
| Parameter | Value |
|---|---|
| Max Gear Diameter | 400 mm |
| Module Range | 1 - 8 |
| Gear Type | External spur and helical |
| Max Face Width | 300 mm |
| Max Helix Angle | ±45 degrees |
| Grinding Wheel Spindle Speed | Up to 8,000 RPM |
| Table Speed (Workpiece) | Fully CNC servo |
| Accuracy | DIN 4 achievable (AGMA 12) |
| Dressing | Rotary diamond dressing, CNC |
| Control | Reishauer ANCA CNC / proprietary |
Specifications sourced from reishauer.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Continuous generating grinding for fastest cycle times in volume production
- Two grinding wheel spindles with automatic dressing for consistent quality
- Topographic correction for noise-optimized gear flanks
- Handles both spur and helical gears in the same setup
- Proven in automotive transmission production worldwide
Limitations
- Highest capital cost in gear grinding category
- Requires specialized gear metrology equipment for setup and SPC
- Continuous generating not suited for internal gears or large modules > 8
Best For
Frequently Asked Questions
01
Generating grinding uses a threaded wheel that continuously sweeps through the gear tooth space via synchronized helical motion, producing the involute profile by the relative motion of wheel and gear. Profile grinding uses a formed wheel shaped exactly to the tooth space, grinding the profile directly. Generating is faster for production volumes; profile grinding is more flexible for small batches and large modules.
02
The Reishauer RZP 400 achieves DIN 4 or AGMA 12 gear quality, which is suitable for automotive transmission gears, industrial reducers, and aerospace accessory gearboxes. This quality level produces very low noise transmission gears.
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