Working accuracy (standard test specimen)

Inspection item	UNCG200
Roundness	0.003mm/1000mm
Consistency of the longitudinal section diameter	0.008mm/1000mm
Roughness	Ra≤0.32μm

 
Technical parameters of UNCG200 CNC Universal Cylindrical Grinding Machine

Model		Unit	UNCG200
CNC system			FANUC 0i-MF
Distance between centers		mm	500 / 750 (20”/ 30”)
Center height		mm	125 / 160 (4.9”/ 6.3”)
Max. grinding diameter		mm	200 (7.9”)
Max. workpiece weight between centers		kg	50
Grinding wheel	OD x W x ID	mm	400/500×40/50×203 (16/20x1.6/2x8”)
	Linear speed	m/s	35/45
	Feed speed	mm/min	0.05-5000
	Min. setting unit	mm	0.001
Worktable	Type		Two layer conical degree adjusting worktable
	Feed speed	mm/min	0.05-5000
	Min setting unit	mm	0.001
Work head	Center		MT-4
	Rotating speed	rpm	30-300; stepless
Tailstock	Center		MT-4
	Travel of center	mm	25 / 60 (1”/ 2.4”)
Internal grinding	Range of international grinding	mm	13-80 (0.51-3.1”)
	Max. length of international grinding	mm	100 (3.9”)
Electrical system	Power of wheel spindle motor	kW	7.5/11
	Torque of wheel head feeding motor	Nm	8/12
	Torque of worktable feeding motor	Nm	8/12
	Power of work head spindle motor	kW	4.7
	Power of internal grinding motor	kW	0.55
	Hydraulic pump motor	kW	0.75 (4P)
	Motor of wheel spindle bearing lubrication pump	kW	0.75 (4P)
Cubage dimension	Hydraulic and lubricating oil tank	L	30
	Spindle bearings oil tank	L	30

Optional accessories
1. Hydraulic steady rest: 78-98 or 80-115mm;
2. Grinding wheel automatic balancer;
3. Wheel anti-collision and idle running elimination device;

Features
1. With integral protective cover, the machine tool is convenient for maintenance and in conformity with human engineering requirements.
2. With a sleeve type hydrostatic/hydrodynamic main shafting adopted for the grinding wheel spindle, the machine tool features on the high rotary precision and good rigidity.
3. With two-axis linkage feeding, the machine tool is equipped with worktable (Z axis) and wheel head (X axis) driven by AC servo motor and ball screws. The minimum setting unit is 0.1μm, while the maximum fast feed speed can reach 5m/min.
4. The machine tool can be provided with various diamond dressers (installed on the rear side of the work head) according to the needs of customers, thus realizing precise numerical control dressing for complex wheel profile and automatic compensation.
5. The machine tool is provided with active measuring device, thus realizing the closed-loop control of grinding process.
6. The machine tool is provided with all-around controlling functions including grinding program changes, work-piece quality control, machine condition monitoring, fault self-diagnostics, abnormal alarm, and convenient menu type interface input.

The NCG, UNCG range of CNC cylindrical grinding machines covers a range of component sizes up to 5 metres long, 0.8 metre in diameter and up to a maximum component weight of 3000 kg. All the machines include the latest Fanuc,Siemens control and equipment packages
There are many options and configurations available, for example external, internal or universal grinding, C axis for grinding non-circular shapes eg polygons, cams etc and the there is also the possibility of multiple grinding heads with automatic B axis rotation.
All levels of automation and other personalised options are also available
NC, CNC & Universal Cylindrical Grinders
FORTUNE PACIFIC specializes in designing and manufacturing a wide range of grinding machines and accessories that are exported to over 50 countries around the world. FORTUNE PACIFIC was established in 1999 and has maintained consistently favorable customer feedback. 

These grinding machines can be either conventional or numerical controlled (i.e., NC, 2NC, CNC) utilizing Fanuc, Siemens, and Mitsubishi controls.

Easy and user-friendly operating systems eliminate the need for highly skilled engineers, resulting in lower operating and maintenance costs.
Better lubrication system with maximum wear resistance.
Higher precision, more rigidity, and the least possible noise.
Customizable machine body along with a programmable control system.
Able to meet mass production requirements with higher efficiency and accuracy.

including
Automated Grinding
CNC Universal Cylindrical Grinder
CNC CYLINDRICAL GRINDER (PLUNGE TYPE)
CNC CYLINDRICAL GRINDER (ANGULAR TYPE)
CNC TRAVERSE WHEELHEAD CYLINDRICAL GRINDER

A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation.

Grinding is used to finish workpieces that must show high surface quality (e.g., low surface roughness) and high accuracy of shape and dimension. As the accuracy in dimensions in grinding is of the order of 0.000025 mm, in most applications it tends to be a finishing operation and removes comparatively little metal, about 0.25 to 0.50 mm depth. However, there are some roughing applications in which grinding removes high volumes of metal quite rapidly. Thus, grinding is a diverse field.

Overview
The grinding machine consists of a bed with a fixture to guide and hold the work piece, and a power-driven grinding wheel spinning at the required speed. The speed is determined by the wheel’s diameter and manufacturer’s rating. The grinding head can travel across a fixed work piece, or the work piece can be moved while the grind head stays in a fixed position.

Fine control of the grinding head or table position is possible using a vernier calibrated hand wheel, or using the features of numerical controls.

Grinding machines remove material from the work piece by abrasion, which can generate substantial amounts of heat. To cool the work piece so that it does not overheat and go outside its tolerance, grinding machines incorporate a coolant. The coolant also benefits the machinist as the heat generated may cause burns. In high-precision grinding machines (most cylindrical and surface grinders), the final grinding stages are usually set up so that they remove about 200 nm (less than 1/10000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible.

Features
1. With integral protective cover, the machine tool is convenient for maintenance and in conformity with human engineering requirements.
2. With a sleeve type hydrostatic/hydrodynamic main shafting adopted for the grinding wheel spindle, the machine tool features on the high rotary precision and good rigidity.
3. With two-axis linkage feeding, the machine tool is equipped with worktable (Z axis) and wheel head (X axis) driven by AC servo motor and ball screws. The minimum setting unit is 0.1μm, while the maximum fast feed speed can reach 5m/min.
4. The machine tool can be provided with various diamond dressers (installed on the rear side of the work head) according to the needs of customers, thus realizing precise numerical control dressing for complex wheel profile and automatic compensation.
5. The machine tool is provided with active measuring device, thus realizing the closed-loop control of grinding process.
6. The machine tool is provided with all-around controlling functions including grinding program changes, work-piece quality control, machine condition monitoring, fault self-diagnostics, abnormal alarm, and convenient menu type interface input.

Technical parameters of UNCG200 CNC Universal Cylindrical Grinding Machine

Model		Unit	UNCG200
CNC system			FANUC 0i-MF
Distance between centers		mm	500 / 750 (20”/ 30”)
Center height		mm	125 / 160 (4.9”/ 6.3”)
Max. grinding diameter		mm	200 (7.9”)
Max. workpiece weight between centers		kg	50
Grinding wheel	OD x W x ID	mm	400/500×40/50×203 (16/20x1.6/2x8”)
	Linear speed	m/s	35/45
	Feed speed	mm/min	0.05-5000
	Min. setting unit	mm	0.001
Worktable	Type		Two layer conical degree adjusting worktable
	Feed speed	mm/min	0.05-5000
	Min setting unit	mm	0.001
Work head	Center		MT-4
	Rotating speed	rpm	30-300; stepless
Tailstock	Center		MT-4
	Travel of center	mm	25 / 60 (1”/ 2.4”)
Internal grinding	Range of international grinding	mm	13-80 (0.51-3.1”)
	Max. length of international grinding	mm	100 (3.9”)
Electrical system	Power of wheel spindle motor	kW	7.5/11
	Torque of wheel head feeding motor	Nm	8/12
	Torque of worktable feeding motor	Nm	8/12
	Power of work head spindle motor	kW	4.7
	Power of internal grinding motor	kW	0.55
	Hydraulic pump motor	kW	0.75 (4P)
	Motor of wheel spindle bearing lubrication pump	kW	0.75 (4P)
Cubage dimension	Hydraulic and lubricating oil tank	L	30
	Spindle bearings oil tank	L	30

The NCG, UNCG range of CNC cylindrical grinding machines covers a range of component sizes up to 5 metres long, 0.8 metre in diameter and up to a maximum component weight of 3000 kg. All the machines include the latest Fanuc,Siemens control and equipment packages
There are many options and configurations available, for example external, internal or universal grinding, C axis for grinding non-circular shapes eg polygons, cams etc and the there is also the possibility of multiple grinding heads with automatic B axis rotation.
All levels of automation and other personalised options are also available
NC, CNC & Universal Cylindrical Grinders
FORTUNE PACIFIC specializes in designing and manufacturing a wide range of grinding machines and accessories that are exported to over 50 countries around the world. FORTUNE PACIFIC was established in 1999 and has maintained consistently favorable customer feedback.