Used TAIYO KOKI NVG-8T CNC Vertical Grinding Machine

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Product Highlight

Used TAIYO KOKI NVG-8T is a Japanese CNC vertical grinding machine designed for high-precision ID, OD and face grinding. Equipped with FANUC 32i control, a Ø750 mm rotary table, up to Ø800 mm grinding capacity, 700 kg workpiece load and a 6-position ATC, it is well suited for bearings, gears, hydraulic parts, machine tool components and other large precision rotational workpieces. Its vertical configuration provides stable support for heavy components while helping manufacturers consolidate precision grinding operations.

Product Description

Used TAIYO KOKI NVG-8T CNC vertical grinding machine from Japan, equipped with FANUC 32i control, Ø800 mm grinding capacity, 700 kg table load, and 6-position ATC. Built for precision ID, OD and face grinding of medium-to-large rotational components.

Technical Specifications

Specification	Details
Condition	Used / Pre-owned
Manufacturer	TAIYO KOKI
Model	NVG-8T
Machine Type	CNC Vertical Multi-Process Grinding Machine
Country of Origin	Japan
CNC Control	FANUC Series 32i-Model A
CNC Display	10.4-inch color LCD
Internal Grinding Diameter	Approx. Ø45–Ø800 mm
Maximum External Grinding Diameter	Ø800 mm
Internal Grinding Length	325 mm for workpieces up to Ø250 mm
Internal Grinding Length	500 mm for workpieces above Ø250 mm
Maximum External Grinding Length	500 mm
Work Spindle Swing	Ø850 mm
Workpiece Height Above Table	600 mm, including fixture
Rotary Table Diameter	Ø750 mm
Maximum Table Load	700 kg
Table Speed	8–200 rpm, stepless
X-Axis Travel	1,200 mm to right / ATC position
X-Axis Travel to Left	300 mm
Z-Axis Travel	725 mm
X/Z Rapid Traverse	0–24,000 mm/min
Minimum Command Increment	0.0001 mm
Internal Grinding Spindle Speed	2,500–10,000 rpm
Internal Grinding Wheel Diameter	Ø40–Ø250 mm
Internal Spindle Taper	BT50, 7/24 taper
External Grinding Spindle Speed	2,400–3,000 rpm
External Grinding Wheel Size	Ø355 × 65 mm
Max. Wheel Peripheral Speed	2,700 m/min
Main Spindle Motor	3.7 / 5.5 kW
Internal Grinding Spindle Motor	7.0 kW
External Grinding Spindle Motor	7.5 kW
X-Axis Motor	6.0 kW
Z-Axis Motor	5.5 kW
Hydraulic Pump Motor	0.75 kW
Coolant Pump Motor	1.5 kW
Grinding Spindle Cooling Pump	0.2 kW
ATC / Tool Capacity	6 positions
Power-On Time	Approx. 1,333 hours
Operating Time	Approx. 705 hours
Distance from Worktable to Grinding Spindle End	Approx. 1,050 mm
C-Axis Travel	360°
Minimum Indexing / Command	0.0001
Coolant Separation	Magnetic separator
Machine Structure	Gantry-style vertical structure
Approx. Machine Dimensions	3,340 × 4,050 × 3,200 mm

FANUC 32i Control Features

CNC Feature	Specification
CNC System	FANUC 32i
Display	10.4-inch color LCD
Manual Pulse Generator	Equipped
I/O Interface	RS232C
Program Memory	128 Kbyte
Registered Programs	Up to 250
Custom Macro	Custom Macro B
Grinding Fixed Cycles	Supported
Optional Block Skip	4 blocks
Extended Program Editing	Supported
Handle Interrupt	Supported

Included / Machine-Specific Equipment

The machine specification includes a coolant temperature control system, high-capacity magnetic separator, grinding wheel dressing equipment, external grinding wheel flange, mist collector and permanent magnetic chuck configuration. These systems are useful for maintaining grinding stability, coolant cleanliness and repeatable precision during production.

Applications & Suitable Industries

Used TAIYO KOKI NVG-8T is designed for precision grinding of medium-to-large rotational components, particularly where workpiece weight, concentricity and setup stability are important.

Typical applications include:

Bearing rings and bearing components
Large gear components and gear housings
Hydraulic and pneumatic parts
Precision sleeves, bushings and hubs
Motor and gearbox components
Automotive drivetrain components
Aerospace precision components
Machine tool spindle and structural components
Pump and compressor components
Large hardened cylindrical parts
Internal diameter grinding
External diameter grinding
Face grinding and precision finishing

Its vertical workholding layout is particularly suitable for relatively large or heavy circular components. With up to Ø800 mm grinding capacity and 700 kg table load, the NVG-8T can be an attractive alternative for manufacturers that need Japanese precision grinding capability without purchasing a new machine.

FAQ

What is the maximum grinding diameter of the NVG-8T?

The machine can handle external grinding up to approximately Ø800 mm and internal grinding from approximately Ø45 to Ø800 mm, making it suitable for medium and large precision rotational components.

Can this used NVG-8T perform both ID and OD grinding?

Yes. The machine is configured for both internal diameter grinding and external diameter grinding. Its vertical multi-process layout is well suited to applications requiring several precision-ground surfaces on the same type of component.

What CNC control is installed on this TAIYO KOKI grinder?

It is equipped with a FANUC Series 32i-Model A CNC control, including a 10.4-inch color display, manual pulse generator, Custom Macro B, grinding cycles and RS232C interface.