Samputensili SI 400 RS Gear Grinding Machine
Key Specifications
Max Gear Diameter
Module Range
Max Face Width
Helix Angle Range
Grinding Wheel Type
Wheel Spindle Speed
Overview
The Samputensili SI 400 RS is a continuous generating gear grinding machine designed for hard finishing of external spur and helical gears up to 400mm pitch diameter. Built by Italian gear machine specialist Samputensili (part of the SAMP Group), the SI 400 RS incorporates the company's RS (Rough and Smooth) grinding cycle that combines roughing and finishing passes with a single multi-layer threaded grinding wheel, reducing overall cycle time compared to conventional two-wheel approaches. The machine features a synchronized electro-spindle drive for the threaded wheel and an independent CNC dressing unit. Gear quality achievable is DIN 4 / AGMA 12. The Siemens 840D sl control with Samputensili's GearTec programming system makes setup and process documentation straightforward. The SI 400 RS is commonly found in automotive powertrain and industrial gearbox production.
Full Specifications
| Parameter | Value |
|---|---|
| Max Gear Diameter | 400 mm |
| Module Range | 1 - 6 |
| Max Face Width | 280 mm |
| Helix Angle Range | ±45 degrees |
| Grinding Wheel Type | Multi-layer threaded wheel (RS technology) |
| Wheel Spindle Speed | Up to 7,500 RPM |
| Achievable Gear Quality | DIN 4 / AGMA 12 |
| Dressing | CNC rotary diamond dresser |
| Control | Siemens 840D sl + Samputensili GearTec |
| Noise Optimization | Topographic modification capable |
Strengths & Limitations
Strengths
- RS dual-layer wheel technology combines roughing and finishing for shorter cycles
- DIN 4 / AGMA 12 quality for quiet, accurate automotive transmission gears
- GearTec software for straightforward programming of complex gear forms
- Topographic modification for noise-optimized gear flanks
- Italian precision engineering with global Samputensili SAMP service
Limitations
- Module 6 maximum (smaller than Reishauer RZP 400 at module 8)
- High capital cost
- RS wheel technology learning curve vs conventional single-wheel grinding
Best For
Frequently Asked Questions
01
RS technology uses a threaded grinding wheel with multiple abrasive layers — a coarser roughing layer that removes material quickly and a finer finishing layer that produces the final surface quality. By cycling between these layers on the same wheel without changing tools, the RS process reduces total cycle time compared to using separate roughing and finishing wheels.
Community Discussions
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Links to community discussions. Summaries are editorial — visit the original thread for full context.
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