Studer S141
Key Specifications
axes
max workpiece length between centers
max external grinding diameter
max internal bore diameter
max workpiece weight between centers
wheelhead configuration
Overview
The Studer S141 is a large universal cylindrical grinding machine combining external and internal cylindrical grinding capability in a single machine, designed for complex components that require both OD and ID grinding to tight concentricity tolerances in one setup. It addresses the most demanding universal grinding requirements in aerospace, die and mold, hydraulics, and precision engineering where multiple grinding operations on a single workpiece must be completed without rechucking.
The S141 handles workpieces up to 1,000 mm (39.4 in) between centers for external cylindrical grinding, with a maximum grinding diameter of 400 mm (15.7 in) OD and an internal bore grinding capability up to 300 mm (11.8 in) diameter. Maximum workpiece weight between centers is 250 kg (551 lb). The multi-spindle wheelhead accommodates both an external grinding wheel and an internal grinding spindle, enabling rapid switchover between OD and ID operations without removing the workpiece.
The wheelhead swivels 0-90 degrees (and optionally ±15 degrees) providing full angular grinding capability. The C-axis workhead provides precision rotational control for face grinding and profiling operations. All linear axes use Studer's StuderGuide hydrostatic guideway system. The machine is built on a Granitan mineral casting base for maximum vibration damping.
StuderGRIND software provides full programming for combined OD/ID sequences, automatic wheel changeover between external and internal spindles, and in-process gauging integration. Automation loading via portal or robot cell is fully supported.
New Studer S141 machines are typically priced in the $550,000-$800,000 range. Used units are occasionally available in the $230,000-$420,000 range.
Full Specifications
| Parameter | Value |
|---|---|
| Axes | 5 (X, Z linear + C workhead, B wheelhead swivel, optional Y) |
| Max Workpiece Length Between Centers | 1,000 mm (39.4 in) |
| Max External Grinding Diameter | 400 mm (15.7 in) |
| Max Internal Bore Diameter | 300 mm (11.8 in) |
| Max Workpiece Weight Between Centers | 250 kg (551 lb) |
| Wheelhead Configuration | Multi-spindle: external + internal |
| Wheelhead Swivel | 0-90 degrees (optional ±15 degrees) |
| External Grinding Wheel | 750 x 100 mm (29.5 x 3.94 in) |
| Guideway System | StuderGuide hydrostatic/aerostatic |
| Base Material | Granitan mineral casting |
| Machine Dimensions | 5,400 x 2,400 x 2,200 mm (212.6 x 94.5 x 86.6 in) |
| CNC Control | StuderWIN with StuderGRIND on Fanuc CNC |
Specifications sourced from studer.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Combined OD and ID grinding capability in a single setup eliminates rechucking errors for complex shafts and housings with both external diameters and internal bores
- 1,000 mm between-centers length handles large shaft components — long hydraulic rods, aerospace structural shafts, and large-bore spindles
- 250 kg between-centers workpiece capacity enables grinding of heavy shaft assemblies and large-diameter components in one machine
- Multi-spindle wheelhead switches between external and internal spindle automatically under CNC control, reducing operator intervention during complex sequences
- Granitan mineral casting base provides exceptional vibration damping for superior surface finish on large, heavy workpieces
- StuderGRIND programming handles complex OD/ID sequences with automatic wheel changeover logic and in-process gauging compensation
Limitations
- Machine footprint of 5,400 x 2,400 mm and Granitan base weight require substantial foundation work and a large, well-conditioned machine shop environment
- Price of $550,000-$800,000 new is at the high end of universal cylindrical grinders — justification requires high-value components or consistent mixed OD/ID work
- Complex multi-spindle configuration requires more skilled operators and more comprehensive maintenance than a single-spindle universal grinder
- Not optimized for high-volume single-operation grinding — the S100 or S33 would be more efficient for pure OD or pure ID production grinding
- Long machine at 5,400 mm requires careful shop planning for access during workpiece loading and machine maintenance
Best For
Frequently Asked Questions
01
The S41 is Studer's large universal cylindrical grinder focused primarily on external OD grinding with a swiveling wheelhead for angular work. The S141 adds a dedicated multi-spindle wheelhead that includes both an external grinding wheel and an internal grinding spindle, making it a true universal machine for OD plus ID combinations. The S141 also typically handles larger workpiece weights and longer between-centers distances than the S41 configuration.
02
Yes — this is the S141's defining capability. With the workpiece clamped in the chuck or between centers, the multi-spindle wheelhead can engage the external grinding wheel for OD work, then index to the internal grinding spindle for bore grinding, all under CNC program control. Concentricity between OD and bore features ground in the same setup is limited only by the machine's geometric accuracy, not by rechucking error.
03
New Studer S141 machines typically price between $550,000 and $800,000 depending on wheelhead configuration, spindle options, automation, and measuring system integration. Used units appear occasionally in the $230,000-$420,000 range, though availability is limited compared to more common models. Contact United Grinding's US dealer network for current pricing.
04
Yes. The S141 integrates with Studer's in-process measuring systems for both external and internal dimensions. The CNC automatically adjusts grinding parameters based on real-time gauge feedback, compensating for wheel wear and thermal drift during production runs. This is standard practice for the high-value components the S141 typically grinds.
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