Danobat IRD-300

Specs verified 2026-10-05 · danobat.com Updated 2026-10-05

Danobat Overbeck IRD series radius grinding machine, shown without enclosure

Image: danobat.com, Danobat

Key Specifications

max internal grinding diameter

200 mm (7.87 in)

max internal grinding length

100 mm (3.94 in)

max external grinding length

100 mm (3.94 in)

max swing diameter

215 mm (8.46 in)

max workpiece length incl clamping

250 mm (9.84 in)

max workpiece weight incl clamping

80 kg (176 lb) / 100 Nm

How much does the Danobat IRD-300 cost?

Price estimate

Uncertain

We do not have a price for the Danobat IRD-300 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

Radius grinding in a small footprint is the brief of the Danobat IRD-300, the entry model of the Overbeck IRD series. Its workhead sits on a B0 axis that swivels +91° / -15°, so a spherical seat, a contoured bore or a steep taper can be generated by swinging the part past the wheel. Danobat calls the IRD the only grinding machine that combines radius grinding with fully integrated non-round capabilities.

The envelope is the smallest of the three IRD models. Swing is 215 mm (8.46 in), the workpiece with clamping can be 250 mm (9.84 in) long, and the weight limit is 80 kg (176 lb), paired in the table with 100 Nm. Bores are ground up to 200 mm (7.87 in) in diameter. Internal and external grinding lengths are both 100 mm (3.94 in). X travels 400 mm (15.75 in) and Z 300 mm (11.81 in).

Those numbers are the same as the ID-300 in every row the two share. What separates them is the swivelling workhead on this machine and the turret: Danobat states the IRD-300 offers up to 3 spindles and a measuring probe, and that it is 40% smaller than other alternatives. The outer dimensions are 215 x 210 x 220 cm (84.65 x 82.68 x 86.61 in), height x width x depth.

Automation was part of the design. Per the series page, even the most compact IRD model comes with a dedicated space for a robot. The rest is the common Overbeck build of granite base, linear motors, direct-drive workhead and motor spindles, programmed through DoGrind+ with its assistants for thread, non-round, jig and taper work.

Full Specifications

Parameter	Value
Max Internal Grinding Diameter	200 mm (7.87 in)
Max Internal Grinding Length	100 mm (3.94 in)
Max External Grinding Length	100 mm (3.94 in)
Max Swing Diameter	215 mm (8.46 in)
Max Workpiece Length Incl Clamping	250 mm (9.84 in)
Max Workpiece Weight Incl Clamping	80 kg (176 lb) / 100 Nm
B0 Axis Swivel	+91° / -15°
X Axis Travel	400 mm (15.75 in)
Z Axis Travel	300 mm (11.81 in)
Machine Dimensions	215 x 210 x 220 cm (84.65 x 82.68 x 86.61 in) (height x width x depth)
Spindle Turret	up to 3 spindles and a measuring probe

Specifications sourced from danobat.com — verified 2026-10-05

Strengths & Limitations

Strengths

B0 axis swivels the workhead +91° / -15° for radius, taper and contour grinding in one set-up
Up to 3 spindles and a measuring probe in a machine 210 cm wide and 220 cm deep
Dedicated space for a robot in the most compact IRD model, according to Danobat
Radius grinding combined with integrated non-round capability in one software
400 mm (15.75 in) of X travel on a machine with a 215 mm (8.46 in) swing

Limitations

Grinding length is 100 mm (3.94 in) inside and outside, the shortest in the IRD series
Carries up to 3 spindles where the IRD-500 and IRD-700 carry up to 5
80 kg (176 lb) weight limit including clamping, listed with 100 Nm
Swing of 215 mm (8.46 in) rules out the larger rings the IRD-500 accepts

Best For

Small parts with spherical or radiused bores, such as valve seats and ball races Mixed batches needing ID, OD, face, taper and radius grinding in one clamping Compact cells with a robot loading inside the machine's own footprint Non-round and thread forms on parts up to 250 mm (9.84 in) long with clamping

Frequently Asked Questions

01 What makes the IRD-300 different from the ID-300?

The B0 axis. Both share a 215 mm (8.46 in) swing, 200 mm (7.87 in) maximum bore, 400 mm (15.75 in) of X travel and the same outer dimensions. The IRD-300 adds a workhead that swivels +91° / -15° for radius grinding, and Danobat quotes it with up to 3 spindles and a measuring probe; the ID-300 is listed with up to 4 spindles.

02 What swivel range does the B0 axis have?

+91° / -15° on all three IRD models. Swinging past the perpendicular lets the wheel follow a full quarter radius and reach a face square to the bore. The ILD-600, by comparison, has a B0 range of +20° / -10° intended for tapers and small radii.

03 What are the capacities of the IRD-300?

Maximum internal grinding diameter 200 mm (7.87 in), internal grinding length 100 mm (3.94 in), external grinding length 100 mm (3.94 in), swing 215 mm (8.46 in), workpiece length including clamping 250 mm (9.84 in). The workpiece weight limit including clamping is 80 kg (176 lb), stated with 100 Nm.

04 Does the IRD-300 come with a robot?

Not as a stated standard. Danobat says every IRD model is engineered for easy integration and that the most compact model comes with a dedicated space for a robot, adding that the compact model may come with an integrated robot. Gantries and hybrid systems are named as alternatives, so loading is chosen per project.