Used KONDO CNC Roll Grinder Japan | 2500mm FANUC 21i

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Product Highlight

Used KONDO heavy-duty CNC roll and cylindrical grinder from Japan, equipped with FANUC 21i control. With 2500 mm between centers, Ø650 mm grinding capacity and a 1000 kg maximum workpiece load, this machine is well suited for long shafts, industrial rolls, rollers and other large cylindrical components. Its fine CNC feed control, powerful 15 kW grinding spindle and large working capacity make it a practical option for heavy-duty grinding, repair and reconditioning applications.

Product Description

Used KONDO CNC roll grinder and heavy-duty cylindrical grinding machine from Japan is designed for precision OD grinding of long shafts, industrial rolls, rollers and other large cylindrical components.

Equipped with a FANUC 21i CNC control, the machine offers 2500 mm distance between centers, Ø650 mm maximum grinding diameter and up to 1000 kg workpiece capacity. Fine CNC feed control and a 15 kW grinding wheel spindle make it a strong option for workshops handling large shaft and roll grinding applications.

Technical Specifications

Specification	Details
Machine Type	CNC Roll Grinder / Heavy-Duty Cylindrical Grinder
Condition	Used / Pre-owned
Brand	KONDO
Country of Origin	Japan
Manufacture Year	2006
CNC Control	FANUC Series 21i
Maximum Distance Between Centers	2500 mm
Swing Over Table	Ø900 mm
Grinding Diameter	Ø20–Ø650 mm
Maximum Workpiece Load Between Centers	1000 kg
Grinding Wheel Size	Ø610 × 75 × Ø203.2 mm
Grinding Wheel Speed Control	Inverter controlled, 4 ranges
Wheel Speed with Ø610 Wheel / 45 m/s Specification	1410 rpm
Wheelhead Infeed Travel – X Axis	430 mm
Minimum X-Axis Command Unit	Ø0.001 mm
X-Axis Manual Pulse Generator	×1: Ø0.001 mm / ×10: Ø0.01 mm / ×100: Ø0.1 mm
X-Axis Rapid Feed G00	3000 mm/min
X-Axis Cutting Feed G01	0.001–3000 mm/min
Longitudinal Traverse – Z Axis	2785 mm
Minimum Z-Axis Command Unit	0.001 mm
Z-Axis Manual Pulse Generator	×1: 0.001 mm / ×10: 0.01 mm / ×100: 0.1 mm
Z-Axis Rapid Feed G00	6000 mm/min
Z-Axis Cutting Feed G01	0.001–3000 mm/min

Workhead

Specification	Details
Drive Type	Belt-driven, dead-spindle type
Spindle Taper	MT No.5
Through Hole Diameter	Ø40 mm
Speed Control	CNC controlled, stepless
Normal Workhead Speed	10–150 rpm
Maximum Workhead Speed	300 rpm

Tailstock

Specification	Details
Tailstock Type	Manual / Hydraulic Combination
Tailstock Taper	MT No.5
Through Bore Diameter	Ø25 mm
Manual Quill Stroke	100 mm
Hydraulic Quill Stroke	50 mm

Motor Power

Motor	Power
Grinding Wheel Spindle Motor	15 kW
Workhead Motor with Reduction Gear	4.4 kW
X-Axis Wheelhead Infeed Motor	2.1 kW
Z-Axis Traverse Motor	4.2 kW
Grinding Wheel Spindle Lubrication Motor	0.1 kW
Slideway Lubrication Motor	0.060 kW
Grinding Coolant Motor	0.25 kW
Machine Bed Flushing Motor	0.18 kW

Specifications are based on the supplied machine information. Buyers should confirm the final configuration, accuracy and included accessories before purchase.

Applications & Suitable Industries

Used Japanese KONDO CNC cylindrical grinder is particularly suitable for machining long, large-diameter and relatively heavy rotational components.

Typical applications include:

Industrial roll grinding for straight cylindrical roll surfaces
Long shaft OD grinding
Large rotor shaft and drive shaft grinding
Mandrel and spindle grinding
Heavy machinery shaft manufacturing
Regrinding and refurbishment of worn rolls and rollers
Large precision cylindrical components
Steel processing and roll maintenance workshops
Heavy equipment component manufacturing
Contract machining and industrial repair workshops

With a 2500 mm center distance and 1000 kg workpiece capacity, it is especially attractive to buyers who need substantially more capacity than a conventional 500–1000 mm cylindrical grinder.

FAQ

What is the maximum size of shaft or roll this machine can grind?

The machine provides 2500 mm between centers, a maximum stated grinding diameter of Ø650 mm, a Ø900 mm swing over the table, and a maximum workpiece load of 1000 kg between centers.

What CNC system does this used KONDO grinder use?

It is equipped with a FANUC Series 21i CNC control, providing programmable X- and Z-axis movement together with manual pulse generator control for fine positioning.

How fine is the programmable feed on this cylindrical grinder?

The stated minimum setting unit is Ø0.001 mm for wheelhead infeed and 0.001 mm for longitudinal travel, making the machine suitable for applications requiring fine grinding adjustment. Final achievable tolerance and surface finish should be confirmed by an actual test grind.

Can this machine be used for industrial roll and long-shaft regrinding?

Yes. Its 2500 mm center distance, Ø650 mm grinding capacity and 1000 kg workpiece load make it suitable for many long-shaft, roller and industrial roll regrinding applications. Buyers should confirm the required profile, tolerance, wheel specification and workholding arrangement for their specific parts.