Schneeberger Sirius

$260,000 - $360,000 Updated 2026-03-17

Key Specifications

Number of CNC Axes

Tool Diameter Range

1 – 32 mm

Maximum Grinding Length

280 mm

Grinding Spindle Configuration

2-spindle head (auto-index)

Grinding Spindle Speed

Up to 10,000 RPM

Grinding Spindle Power

7.5 kW

Overview

The Schneeberger Sirius is a CNC tool grinding center designed to combine high production throughput with the flexibility to handle a broad spectrum of rotary cutting tool types. Positioned as a mid-to-high production platform within Schneeberger's grinding machine range, the Sirius targets tool manufacturers and large captive tool rooms that need a dependable workhorse capable of handling large batch production while retaining the versatility to switch between tool types with minimal changeover time. The machine's design reflects Schneeberger's Swiss engineering heritage — precision construction, thermally stable structures, and a focus on long-term dimensional repeatability.

The Sirius handles tool diameters from 1 mm to 32 mm, covering the mainstream range from small micro drills to large-shank end mills and form cutters. Grinding length extends to 280 mm, accommodating long series and extra-long reach tools. Five fully interpolating CNC axes enable helical, variable-pitch, and eccentric geometries. Schneeberger equips the Sirius with a two-spindle grinding head that automatically indexes to the required wheel, reducing dead time between operations on tools requiring multiple grinding passes with different wheel profiles.

The machine runs on Schneeberger's MARS software platform, providing parametric tool geometry programming, 3D grinding simulation, and integration with Schneeberger's quality documentation tools. A built-in tool measurement probe option allows in-process dimensional verification, automatically feeding corrections back to the CNC to compensate for wheel wear during long production runs.

The Sirius is engineered for integration with loading automation, and Schneeberger offers a dedicated robot loading system matched to the machine's part interface. The machine's design includes quick-change fixturing to minimize tool changeover time when switching between tool families, supporting the mixed-production environment common in commercial tool grinding services.

Full Specifications

Parameter	Value
Number Of CNC Axes	5
Tool Diameter Range	1 – 32 mm
Maximum Grinding Length	280 mm
Grinding Spindle Configuration	2-spindle head (auto-index)
Grinding Spindle Speed	Up to 10,000 RPM
Grinding Spindle Power	7.5 kW
Positioning Accuracy	±0.001 mm
Repeatability	±0.0005 mm
In-Process Probing	Optional integrated probe
Machine Base	Thermally stable granite composite
Control System	Fanuc + Schneeberger MARS software
Automation Interface	Robot loading compatible

Specifications sourced from schneeberger.com — verified 2026-03-28

Strengths & Limitations

Strengths

32 mm maximum tool diameter covers the mainstream production range from micro drills to large-shank end mills
Two-spindle head with automatic indexing reduces dead time between operations without manual wheel changes
In-process probing option enables closed-loop dimensional control, reducing scrap on long production runs
MARS software parametric programming accommodates a wide variety of tool types without specialist CNC programming knowledge
Thermally stable granite composite base maintains precision across extended production shifts

Limitations

5-axis configuration (not 6-axis) is less capable than premium 6-axis grinders for certain highly complex geometries
Two-spindle head (vs. three on the Corvus) may require additional wheel changes for tools needing three or more wheel specifications
Mid-to-high capital cost requires sustained production volume to achieve competitive cost-per-tool metrics

Best For

Commercial tool grinding services running high volumes of carbide end mills and drills in the 1–32 mm diameter range Large captive tool rooms in automotive or aerospace facilities producing diverse cutting tool portfolios Tool manufacturers using automated loading for extended unattended production, particularly for overnight runs Operations requiring in-process dimensional control to maintain tight batch consistency across large production runs

Frequently Asked Questions

01 What types of tools can the Schneeberger Sirius grind?

The Sirius can grind a wide range of solid carbide and HSS rotary tools including twist drills, straight-flute drills, end mills (2, 3, 4-flute), ball nose end mills, reamers, step drills, countersinks, and thread mills. The MARS software library includes parametric definitions for all standard tool types.

02 How does the in-process probing option work?

The optional integrated touch probe measures a ground feature (such as tool diameter, flute width, or relief angle) after the grinding operation is complete but while the tool is still in the collet. The measurement result is compared to the nominal value, and if deviation exceeds a set threshold, the CNC automatically applies a compensation offset before grinding the next tool.

03 How does the Sirius differ from the Schneeberger Corvus?

The Corvus is a more compact 5-axis machine with a three-spindle head, optimized for tool diameters up to 25 mm in a smaller footprint. The Sirius handles a larger diameter range (up to 32 mm), offers a 280 mm grinding length, and is positioned for higher production volumes. The Sirius is the larger, more production-oriented machine.

04 What automation is available for the Sirius?

Schneeberger offers robot loading automation matched to the Sirius loading interface, supporting unattended production of standard tool blanks. The machine's loading door, workpiece-ready signals, and fault outputs are all designed for automated cell integration.

05 Does the Sirius support wheel dressing?

The Sirius supports external wheel dressing of its grinding wheels offline. For production environments requiring on-machine dressing, Schneeberger offers dressing attachments that can be integrated into the machine setup. The Sirius does not include an integrated automatic dresser as a standard feature, unlike some premium alternatives.