Reishauer RZ 400
This model was not found in Reishauer's current lineup when we checked on 2026-10-03 . It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
Max Workpiece ⌀
maximum gear diameter
maximum workpiece length
module range
gear type
grinding process
How much does the Reishauer RZ 400 cost?
Estimated price range
Our best estimate for a cnc gear cutting machine in this class — not a quote from Reishauer. Configuration moves it a long way.
Overview
The Reishauer RZ 400 is listed as a CNC continuous generating gear grinding machine for external spur and helical gears up to 400 mm (15.7 in) in diameter and module 8 mm, with a 32 kW (43 hp) continuous grinding spindle. It is not in Reishauer's current lineup, and the listed figures are unverified, so use them to judge whether a used RZ 400 is worth a closer look and take the binding values from the machine's own papers.
The envelope goes beyond thin disc gears: 250 mm (9.84 in) of face width, a maximum workpiece length of 350 mm and a workpiece weight of up to 200 kg (441 lb). On wide gears near the top of the diameter range, the 200 kg (441 lb) limit may be reached before the diameter limit is.
Both the workpiece spindle and the grinding spindle are listed as direct-drive and backlash-free, and the grinding spindle runs at up to 6,000 RPM. The tool is a cylindrical grinding worm, CBN or vitrified, with integrated continuous dressing. The table also lists 6 CNC axes and real-time, sensor-based CNC thermal compensation.
Loading is by an integrated ring loader or gantry loader, with a load/unload time of under 8 seconds. The electrical supply is listed as 400 VAC 3-phase 50 Hz, so a plant on a different supply has to plan for conversion. At 14,000 kg (30,865 lb), the machine falls between the RZ 550 at 12,900 kg and the RZ 1000 at 15,500 kg.
Full Specifications
| Parameter | Value |
|---|---|
| Maximum Gear Diameter | 400 mm (15.7 in) |
| Maximum Workpiece Length | 350 mm |
| Module Range | 0.5-8 |
| Gear Type | External spur and helical gears |
| Grinding Process | Continuous generating grinding (worm wheel grinding) |
| Grinding Wheel | Cylindrical grinding worm, CBN or vitrified |
| Dressing System | Integrated continuous dressing |
| Accuracy Achievable | AGMA Quality 11-13 (DIN/ISO Grade 3-5) |
| CNC Control | Reishauer CNC with grinding parameter management |
| Machine Weight | 14,000 kg (30,865 lb) |
| Electrical | 400 VAC 3-phase 50 Hz |
| Max Gear Dia | 15.748" |
| CNC Control | CNC (Siemens Sinumerik 840 D) |
| Machine Type | CNC Continuous Generating Gear Grinding Machine |
| Grinding Type | Continuous generating grinding |
| Max Workpiece Diameter | 400 mm (15.7 in) |
| Max Workpiece Weight | 200 kg (441 lb) |
| Max Module | 8 mm |
| Min Module | 1 mm |
| Max Face Width | 250 mm (9.84 in) |
| Gear Types | External spur and helical gears |
| Workpiece Spindle Drive | Direct-drive (backlash-free) |
| Grinding Spindle Drive | Direct-drive (backlash-free) |
| Grinding Spindle Power | 32 kW (43 hp) continuous |
| Grinding Spindle Speed | Up to 6,000 RPM |
| Loading | Ring loader or gantry loader (integrated) |
| Load Unload Time | Under 8 seconds |
| Number of Axes | 6 CNC axes |
| Thermal Compensation | Real-time sensor-based CNC thermal compensation |
| Quality Achievable | DIN 3962 Class 3-4 / AGMA Q13-14 |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 32 kW (43 hp) continuous grinding spindle running at up to 6,000 RPM
- Workpiece spindle and grinding spindle are both listed as direct-drive and backlash-free
- Integrated ring loader or gantry loader with a load/unload time under 8 seconds
- Real-time, sensor-based CNC thermal compensation is listed
- Takes workpieces up to 400 mm (15.7 in) in diameter, 250 mm (9.84 in) in face width and 200 kg (441 lb)
Limitations
- Maximum module of 8 mm leaves coarser gears to a larger machine
- Workpiece length is limited to 350 mm, so long shafts do not fit
- Electrical supply is listed only as 400 VAC 3-phase 50 Hz
- External spur and helical gears only; no internal gears are listed
- Not in Reishauer's current lineup, and the listed figures are unverified
Best For
Frequently Asked Questions
01
The listed limits are 400 mm (15.7 in) in workpiece diameter, 250 mm (9.84 in) in face width, 350 mm in workpiece length, 200 kg (441 lb) in workpiece weight and a maximum module of 8 mm. Gear types are external spur and helical.
02
The grinding spindle is listed at 32 kW (43 hp) continuous and up to 6,000 RPM. It and the workpiece spindle are both described as direct-drive and backlash-free. The tool is a cylindrical grinding worm, CBN or vitrified, dressed by an integrated continuous dressing system.
03
By an integrated ring loader or gantry loader. The listed load/unload time is under 8 seconds. On a used machine, find out which of the two loaders is fitted and whether its grippers suit your part.
04
The listed weight is 14,000 kg (30,865 lb) and the electrical supply is 400 VAC 3-phase 50 Hz. No footprint, air or coolant figures are listed, so the installation drawing has to come with the machine.
05
The RZ 400 is not in Reishauer's current lineup and is treated here as an older model. The listed figures are unverified. By weight it falls between the RZ 550 at 12,900 kg and the RZ 1000 at 15,500 kg.
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