External cylindrical grinding machine IRD series

internal cylindricalinternal threadexternal thread

Overview
The IRD series consolidates internal, external and radius grinding in a single machine concept and software environment. Designed for flexible production and automation integration, the range offers three models (IRD-300, IRD-500, IRD-700) and multiple configuration options for diverse part types and batch sizes.

Process flexibility

• Multiple grinding processes in one setup: internal (ID), external (OD), face, taper, radius, thread, non-round and jig grinding.
• Radius grinding integrated with non-round grinding in the same system.
• Up to 5 grinding spindles and an in-process measuring probe depending on model and configuration.

Software: DoGrind+

• All-in-one environment for simple and complex grinding cycles.
• Direct programming on the machine control for many cycles without external software.
• Wizard support for thread, non-round, jig and taper grinding to assist selection, confirmation and execution.
• Fast customer-specific customization with short implementation lead times.

Automation

• Engineered for easy integration: compact models provide dedicated space for an integrated robot.
• Multiple automation families: robot inside the machine (S FLEXMOTION), robot in a cell (M FLEXMOTION), external robot or gantry solutions (L FLEXMOTION, M MOTION, L MOTION, HYBRID).
• Solutions tailored to parts, batch variety and production layout (robots, gantries, hybrid systems).

Overbeck precision & key technologies

• Natural granite machine base for thermal stability and vibration damping.
• Linear motors for fast, precise, backlash-free axis motion and low maintenance.
• In-house direct-drive workheads for rigidity, modularity and stable long-cycle performance.
• High-precision grinding spindles with integrated motors, optimized bearings and lubrication for thermal stability and consistent surface quality.

Highlights

• Compact footprint (IRD-300 is approximately 40% smaller than many alternatives) while offering high flexibility.
• Three model family covering a wide part range: IRD-300, IRD-500, IRD-700.
• Energy-aware software with power compensation to reduce energy consumption (up to ~30% potential savings depending on process).

Customisation
Available options and customer-specific configurations include:

• Spindle turret: direct-driven turret with ~300° swivelling range; capacity for up to 5 spindles plus one measuring probe.
• Clamping systems: three-jaw chuck, magnetic chuck, shoe system, customized chucks, steady rest, tailstock.
• Dressing systems: fixed dresser, dressing spindle, radius dresser, dressing revolver, dresser on the workhead, roller dresser.
• Measuring systems: touch probe, in-process measuring, post-process measuring, tool measuring device.

Technical data (summary table)
Columns: IRD-300 | IRD-500 | IRD-700
Max. internal grinding diameter (mm): 200 | 300 | 500
Max. internal grinding length (mm): 100 | 200 | 400
Max. external grinding length (mm): 100 | 150 | 400
Max. workpiece swing diameter (mm): 215 | 360/410 | 700
Max. workpiece length including clamping system (mm): 250 | 400 | 700
Max. workpiece weight incl. clamping system (kg / Nm): 80/100 | 80/100 - 180/300 | 500/500
B0 axis swivelling angle (º): +91º / -15º | +91º / -15º | +91º / -15º
X and Z axis stroke (mm): 400/300 | 450/485 | 700/700
Machine dimensions H x W x D (cm): 215 x 210 x 220 | 215 x 275 x 225 | 235 x 400 x 280

Technical specifications

• Denomination: IRD series (IRD-300, IRD-500, IRD-700).
• Max internal grinding diameters: 200 mm (IRD-300), 300 mm (IRD-500), 500 mm (IRD-700).
• Max internal grinding lengths: 100 / 200 / 400 mm (models 300/500/700 respectively).
• Max external grinding lengths: 100 / 150 / 400 mm.
• Max workpiece swing diameters: 215 mm / 360 or 410 mm / 700 mm.
• Max workpiece length incl. clamping: 250 / 400 / 700 mm.
• Max workpiece weight incl. clamping: up to ~80–500 kg depending on model and configuration.
• Axis strokes X / Z up to 700 / 700 mm on largest model.
• B0 swivel range: +91º / -15º.
• Machine footprints (HxWxD): IRD-300 ~215 x 210 x 220 cm; IRD-500 ~215 x 275 x 225 cm; IRD-700 ~235 x 400 x 280 cm.
• Up to 5 grinding spindles plus measuring probe optional; multiple dressing and clamping variants supported.
• Granite base, linear motors, direct-drive workheads and thermally stable spindle design for high repeatability and surface quality.