Used TOYO T-31N CNC Vertical Honing Machine

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Product Highlight

Used TOYO T-31N is a Japanese CNC vertical honing machine built for precise and efficient internal bore finishing. With a maximum honing diameter of Ø60 mm, 300 mm processing length, Mitsubishi control, servo infeed and a 200–1,200 rpm spindle range, it is a practical solution for automotive and precision component manufacturers seeking proven Japanese honing technology.

Product Description

Used TOYO T-31N CNC vertical honing machine made in Japan, designed for high-precision internal bore finishing in automotive and precision component production. Equipped with Mitsubishi control and servo systems, the machine supports bore diameters up to Ø60 mm, honing lengths up to 300 mm, and spindle speeds from 200 to 1,200 rpm. This unit is well maintained and suitable for manufacturers looking for reliable Japanese precision honing capability at a lower investment cost than purchasing new equipment.

Technical Specifications

Specification	Details
Brand	TOYO
Manufacturer	Toyo Advanced Technologies Co., Ltd.
Model	T-31N
Machine Type	CNC Vertical Honing Machine
Condition	Used, well-maintained
Country of Origin	Japan
Control System	Mitsubishi
Number of Spindle Heads	1
Maximum Honing Diameter	Ø60 mm
Maximum Honing Length	300 mm
Maximum Spindle Stroke	450 mm
Spindle Speed	200–1,200 rpm
Spindle Rotation	Clockwise when viewed from above
Spindle Reciprocation Rate	22 cycles/min
Spindle Drive Method	NC + Ball Screw
Infeed Method	Constant-speed servo infeed
Sizing Method	Counter sizing
Reference Roundness	0.001 mm
Reference Cylindricity	0.003 mm
Reference Surface Finish	Ra 0.1 μm
Workpiece Clamping	Manual
Loading Method	Manual
Work Height from Floor	Approx. 1,100 mm
Coolant Type	Water-soluble coolant
Reciprocation Servo Motor	Mitsubishi 3.0 kW AC Servo
Servo Motor Model	HC-LFS302B with brake
Spindle Motor	Mitsubishi 2.2 kW, 4-pole inverter motor
Spindle Motor Series	SF-JRV, 200 V
Infeed Servo Motor	Mitsubishi 0.6 kW AC Servo
Infeed Servo Model	HA-FF63C-S2
Coolant System	Magnetic separator
Coolant Discharge	Approx. 40 L/min
Coolant Tank Capacity	Approx. 200 L
Coolant Chiller	750 W
Lubrication System	5 L / 70 W

Accuracy note for buyers: Roundness, cylindricity and surface finish values should be treated as reference processing performance. Actual results depend on workpiece material, bore geometry, honing stones, tooling condition, coolant, process parameters and machine setup.

Applications and Suitable Industries

Used TOYO T-31N vertical honing machine is particularly suitable for manufacturers requiring accurate internal diameter finishing and stable bore geometry.

Typical applications include automotive transmission components, precision bushings, sleeves, valve components, compressor parts, hydraulic components, pneumatic components, bearing-related parts, pump components and other precision cylindrical bores.

Its Ø60 mm maximum bore capacity and 300 mm processing length make it especially useful for small-to-medium precision components where roundness, cylindricity, bore size consistency and low surface roughness are critical.

TOYO has extensive experience in machine tools for automotive and precision component manufacturing, and the company currently lists CNC honing machines as part of its machine-tool portfolio.

FAQ

What is the maximum bore diameter this T-31N can hone?

The maximum specified honing diameter is Ø60 mm, with a maximum honing length of approximately 300 mm, making it suitable for a wide range of precision internal bore applications.

What control system does this TOYO honing machine use?

The machine uses a Mitsubishi control and servo system. Mitsubishi components are also used for spindle reciprocation, spindle drive and honing infeed control.

Can the machine be used in a mass-production line?

Yes, the T-31N is designed as a production-oriented CNC honing machine. However, the supplied standard specification indicates manual loading and manual workpiece clamping, so buyers requiring automatic loading, robotic handling or line integration should confirm the required automation configuration before purchase.