Used KELLENBERGER KEL-VARIA US 175/1000 CNC Grinder

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Product Highlight

Used KELLENBERGER KEL-VARIA US 175/1000 is a Swiss CNC universal cylindrical grinding machine designed for precision OD, ID and face grinding. Equipped with FANUC CNC control, hydrostatic axis technology and a two-OD-wheel plus internal-grinding configuration, it provides flexible machining capability for high-precision shafts, spindles, transmission components, tooling and other cylindrical parts. For manufacturers seeking Swiss precision grinding capability without the capital cost of a new premium machine, this used KELLENBERGER offers a compelling combination of versatility, rigidity and micron-level machining potential.

Product Description

Used KELLENBERGER KEL-VARIA US 175/1000 CNC universal cylindrical grinder, made in Switzerland and previously operated in Europe, is configured for high-precision OD, ID and face grinding in a single setup. It features a FANUC Series 300i Model A CNC control, hydrostatic X, Z and B-axis technology, a hydrostatic work spindle, and a flexible configuration with two external grinding wheels and one internal grinding spindle.

The machine has been well maintained and upgraded with a conversational programming interface for easier setup and operation. Seller-reported machining results indicate precision around the 1 μm level, making this pre-owned Swiss cylindrical grinder particularly attractive for precision shafts, spindles, transmission components, tooling and other demanding cylindrical parts.

Technical Specifications

Specification	Details
Manufacturer	KELLENBERGER
Model	KEL-VARIA US 175/1000
Machine Type	CNC Universal Cylindrical Grinding Machine
Condition	Used / Pre-owned
Country of Origin	Switzerland
Previous Operation	Europe
CNC Control	FANUC Series 300i Model A
Programming	Upgraded conversational programming interface
Grinding Capability	OD grinding, ID grinding and face grinding
Grinding Configuration	2 external grinding wheels + 1 internal grinding spindle
Center Height	175 mm
Max. Workpiece Diameter	Ø349 mm
Max. Grinding Length	Approx. 600 mm, seller-provided
Usable Distance Between Centers	Up to 800 mm, seller-provided
X-Axis	Hydrostatic
Z-Axis	Hydrostatic
B-Axis	Hydrostatic
Work Spindle	Hydrostatic
B-Axis Resolution / Indexing	0.1°
Workhead Swivel Range	-10° to +100°
Workhead Spindle Speed	1–1,000 rpm
Workhead Taper	MT5
Spindle Nose	DIN 55026, Size 5
Tailstock Taper	MT4
Tailstock Quill Travel	Approx. 48 mm / 1.9 in
Grinding Wheel Diameters	Ø300 / Ø400 / Ø500 mm, depending on setup
Grinding Wheel Drive	7.5 kW / 10.2 hp
Grinding Spindle Speed	Approx. 800–2,150 rpm
Max. Load Between Centers	Approx. 100 kg
Optional C-Axis	Position-controlled work spindle
Micro-Correction Range	±60 μm
Seller-Reported Concentricity	Below 0.4 μm, subject to verification
Seller-Reported Machining Accuracy	Approximately 1 μm
Reported Straightness Test	Approx. 1 μm over a 600 mm workpiece

Applications & Suitable Parts

The KELLENBERGER KEL-VARIA US 175/1000 used CNC cylindrical grinder is well suited to manufacturers that require tight dimensional relationships between external diameters, internal bores and ground faces. Its multi-wheel configuration helps reduce repeated clamping and can improve process consistency when several grinding operations are completed in one setup.

Typical applications include precision shafts and spindles, bearing journals, gear shafts, splined shafts, couplings, Hirth-type face couplings, machine-tool spindles, pneumatic spindle components, hydraulic pump and valve components, toolholders, collets, precision nuts, gauges, mandrels, cutting tools, punches, ejector pins and precision mold components.

It can also be considered for high-precision components used in aerospace, semiconductor equipment, optical and measuring equipment, automation systems, energy equipment, automotive transmission systems, precision tooling, carbide components, powder metallurgy tooling and general precision engineering.

FAQ

Can this KELLENBERGER grinder perform ID, OD and face grinding?

Yes. The machine is configured with two external grinding wheels and one internal grinding spindle, allowing external diameter, internal diameter and face grinding. For suitable workpieces, multiple grinding operations can be completed without repeated repositioning.

What CNC control does this used KELLENBERGER grinder have?

The machine is equipped with a FANUC Series 300i Model A CNC control. The control system has also been upgraded with a conversational programming interface intended to simplify setup and grinding program operation.

What size workpieces can the KEL-VARIA US 175/1000 handle?

The machine has a 175 mm center height and supports workpieces up to approximately Ø349 mm in diameter. The supplied machine data indicates an effective grinding length of approximately 600 mm and a usable center distance of up to 800 mm; final capacity should be confirmed for the buyer's specific part.

What accuracy can this used KELLENBERGER cylindrical grinder achieve?

According to the seller-provided operating data, the machine is currently working around the 1 μm precision level, with a reported straightness result of approximately 1 μm over a 600 mm test workpiece. For micron-level production requirements, actual accuracy should be confirmed through a sample grinding test and inspection report before purchase.