Hardinge Kellenberger T1000
Key Specifications
X Travel
Z Travel
Max Spindle
Spindle Taper
Spindle Power
Max Workpiece ⌀
Overview
The Hardinge Kellenberger T1000 is a production-class CNC cylindrical grinding machine designed for high-precision OD, face, and shoulder grinding of shaft-type workpieces. Built by Kellenberger, a brand within the Hardinge Grinding Group, the T1000 targets production environments where cycle time and volumetric accuracy must coexist. With a center distance of 400 mm and center heights of 125 or 175 mm, the machine handles workpieces up to 250 or 350 mm in diameter and 150 kg in weight, covering the bulk of automotive, hydraulic, and industrial shaft grinding applications.
The grinding head delivers 10 or 20 kW of water-cooled motor power, driving grinding wheels from 400 mm up to 600 mm diameter at peripheral speeds of 45 to 60 m/s. This range allows the T1000 to run conventional aluminum oxide wheels for general-purpose grinding as well as CBN and superabrasive wheels for high-speed production grinding. The Z-axis provides 600 mm of travel at feed rates up to 30,000 mm/min, while the X-axis cross slide moves through 350 mm at 15,000 mm/min, enabling efficient plunge and traverse grinding cycles.
Kellenberger equips the T1000 with a workhead capable of 1 to 3,000 RPM with encoder resolution of 0.00001 degrees, supporting both between-centers and chucked workholding. The MT5/MT6 mounting cone accommodates standard workholding, and the tailstock with MT3 taper provides 80 mm of stroke with precision adjustment of plus/minus 60 micrometers. Scale resolution across all axes is 0.01 micrometers, delivering the position feedback accuracy that sub-micron roundness demands.
The machine runs on a Siemens SINUMERIK ONE control with a 24-inch touchscreen, representing the latest generation of CNC platform with integrated digital twin capability. The T1000 occupies a 2.4 x 2.9 meter footprint at 6,300 kg, making it a substantial but not oversized production grinding platform. Roundness accuracy is specified at 0.4 micrometers standard or 0.2 micrometers with the high-precision workhead option.
Full Specifications
| Parameter | Value |
|---|---|
| Center Distance | 400 mm (15.7 in) |
| Center Height | 125 / 175 mm (4.9 / 6.9 in) |
| Max Workpiece Diameter | 250 / 350 mm (9.8 / 13.8 in) |
| Max Workpiece Weight | 150 kg (331 lb) |
| Z-Axis Travel | 600 mm |
| Z Feed Rate | 30,000 mm/min (1,181 ipm) |
| X-Axis Travel | 350 mm |
| X Feed Rate | 15,000 mm/min (591 ipm) |
| Grinding Wheel Diameter | 400 / 500 / 600 mm (15.7 / 19.7 / 23.6 in) |
| Grinding Wheel Width | 80 / 120 mm (3.1 / 4.7 in) |
| Grinding Spindle Power | 10 / 20 kW (13.4 / 26.8 hp) water-cooled |
| Peripheral Speed | 45 / 60 m/s |
| Workhead Speed | 1 - 3,000 RPM |
| Workhead Cone | MT5 / MT6 |
| Tailstock Cone | MT3 |
| Tailstock Stroke | 80 mm (3.1 in) |
| Roundness Accuracy | 0.4 / 0.2 µm |
| Scale Resolution | 0.01 µm |
| CNC Control | Siemens SINUMERIK ONE (24" touchscreen) |
| Floor Space Required | 2,400 x 2,900 mm (94.5 x 114.2 in) |
| Machine Weight | 6'300 kg |
| Spindle Motor Power | 10 / 20 kW |
| Max Spindle Speed | 1 - 1 500 / 3 000 min-1 |
| Spindle Taper | MT5 / MT6 |
| Spindle Nose To Table Max | 125 / 175 mm |
| Max Turning Diameter | < 250 / 350 mm |
| Max Turning Length | 400 mm |
| Rapid Traverse X | 15 000 mm/min |
| Rapid Traverse Z | 30 000 mm/min |
| Positioning Accuracy | 0.01 µm |
| Repeatability | 0.4 / 0.2 μm |
| Floor Space | 2.4 m x 2.9 m |
| Cnc Control | SIEMENS SINUMERIK ONE |
| Electrical | 400 V / 460 V, 35 A - 80 A |
| Tailstock Quill Travel | 80 mm |
Specifications sourced from kellenberger.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Siemens SINUMERIK ONE control with digital twin capability represents the latest generation CNC platform for grinding
- Water-cooled grinding spindle with up to 20 kW handles both conventional and CBN superabrasive wheel applications
- Scale resolution of 0.01 micrometers across all axes enables sub-micron roundness accuracy on production parts
- Workhead encoder resolution of 0.00001 degrees supports precision C-axis interpolation for form grinding
- Accommodates grinding wheels from 400 to 600 mm diameter, covering a wide range of production grinding operations
- Compact 2.4 x 2.9 meter footprint relative to performance makes it practical for production floor layouts
Limitations
- 400 mm center distance limits workpiece length compared to larger universal grinders with 1,000+ mm capacity
- Kellenberger brand recognition is lower than Studer or Schaudt outside European markets despite comparable precision
- Machine weight of 6,300 kg requires proper foundation preparation for optimal grinding accuracy
- Production-oriented configuration may lack the versatility of universal grinders with swiveling wheelhead and ID spindle options
Best For
Frequently Asked Questions
01
New Kellenberger T1000 machines typically price between $450,000 and $700,000 depending on grinding spindle power, workhead configuration, and automation options. Higher-precision workhead options and CBN-capable spindle configurations push toward the upper end of the range.
02
The T1000 runs on a Siemens SINUMERIK ONE control with a 24-inch touchscreen display. This is the latest Siemens CNC platform, offering integrated digital twin capability, advanced grinding cycle programming, and Industry 4.0 connectivity.
03
Yes. The T1000's grinding spindle supports peripheral speeds up to 60 m/s with the 20 kW water-cooled motor option, which is well within the operating range for vitrified and electroplated CBN wheels. CBN operation significantly reduces cycle times and extends wheel life in production grinding.
04
Both are production-capable cylindrical grinders in a similar size class. The Studer S31 uses a Granitan mineral casting base and StuderGuide hydrostatic guideways, while the T1000 features SINUMERIK ONE control with digital twin capability. The T1000 is more production-focused, while the S31 offers more universal flexibility with swiveling wheelhead options.
