Popular Products
Working accuracy (standard test specimen)
Technical parameters of NCG320 CNC Cylindrical Grinding Machine
Features
As middle and high grade CNC machine tools, NCG320 CNC cylindrical grinding Machine is independently developed on the basis of applying new technologies and rich experience of designing and manufacturing CNC grinding machines. Characterized by the universalization, high-degree modularization, high rigidity, high efficiency, high adaptability, high precision, easy to operate and reliable performance, these machines are suitable for the mass productive processing of automobile engine crankshaft, camshaft, differential housing, flange plate, and parts of transmission system, such as transmission shaft, half shaft, gear (wheel) shaft, etc. In addition, they also can be applied in the small-scale high precision productions in workshops of military industries, aviation industry, aerospace industry and common precision machining.
1. With the rational layout and 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 high rotary precision and good rigidity. The linear speed of the grinding wheel can reach 60m/s (for specially ordered) and that of CBN grinding wheel is 80m/s (for specially ordered);
3. With two-axis linkage feeding, the machine tool is equipped with worktable (Z axis) and a wheel head (X axis) driven by AC servomotor and ball screws, with maximum fast feed speed of 10m/min;
4. The machine tool can be provided with various types of diamond dressers (installed on the rear side of the work head) according to the needs of customers, thus realizing precise numerical control trimming and automatic compensation;
5. The machine tool is provided with an imported or a domestic active measuring device, thus realizing the closed-loop control of grinding process;
6. The machine tool adopts an imported advanced CNC system and 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.
| Inspection item | NCG320 |
| Roundness | 0.003mm |
| Consistency of the longitudinal section diameter | 0.008mm |
| Roughness: longitudinal grinding | Ra 0.2μm |
| Roughness: plunge-cut grinding | Ra 0.4μm |
| Roughness: end face grinding | Ra 0.63μm |
Technical parameters of NCG320 CNC Cylindrical Grinding Machine
| Model | Unit | NCG320 | |
|---|---|---|---|
| Max. swiveling diameter | mm | Φ350 (14”) | |
| Distance between centers | mm | 750 / 1000 / 1500 (30”/ 39”/ 59”) | |
| Center height | mm | 180 (7”) | |
| Max. grinding diameter | mm | Φ320 (13”) | |
| Max. workpiece weight between centers | kg | 150 | |
| Control System | FANUC/ SIEMENS | ||
| Grinding wheel | OD x W x ID | mm | Φ750×120×Φ305/Φ500(CBN) |
| Linear speed | mm/s | 45/60/80 (CBN) | |
| Wheel head | Total travel | mm | 330 (13”) |
| Feed speed | mm/min | 0.1-5000 | |
| Min. setting unit | mm | 0.001 | |
| Oblique angle | degree | 90° | |
| Worktable | Type | Two layer conical degree adjusting worktable | |
| Feed speed | mm/min | 0.1-5000 | |
| Min setting unit | mm | 0.001 | |
| Work head | Center | MT5 | |
| Rotating speed | rpm | 30-300; stepless | |
| Tailstock | Center | MT5 | |
| Travel of center | mm | 60 (2.4”) | |
| Electrical system | Power of wheel spindle motor | kW | 18.5 |
| Torque of wheel head feeding motor | Nm | 22 (FANUC)/ 27(SIEMENS) | |
| Torque of worktable feeding motor | Nm | 22 (FANUC)/ 27(SIEMENS) | |
| Power of work head spindle motor | kW | 22 (FANUC)/ 27(SIEMENS) | |
| 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 | 45 |
| Spindle bearings oil tank | L | 45 | |
| Internal grinding | Power of internal grinding motor | kW | 11 |
| Range of internal grinding | mm | Φ16-Φ125 | |
| Max. length of internal | mm | 160 | |
| Max. workpiece weight held by chuck | kg | 30 | |
| Net weight | kg | 10000 / 11000 / 13000 | |
As middle and high grade CNC machine tools, NCG320 CNC cylindrical grinding Machine is independently developed on the basis of applying new technologies and rich experience of designing and manufacturing CNC grinding machines. Characterized by the universalization, high-degree modularization, high rigidity, high efficiency, high adaptability, high precision, easy to operate and reliable performance, these machines are suitable for the mass productive processing of automobile engine crankshaft, camshaft, differential housing, flange plate, and parts of transmission system, such as transmission shaft, half shaft, gear (wheel) shaft, etc. In addition, they also can be applied in the small-scale high precision productions in workshops of military industries, aviation industry, aerospace industry and common precision machining.
1. With the rational layout and 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 high rotary precision and good rigidity. The linear speed of the grinding wheel can reach 60m/s (for specially ordered) and that of CBN grinding wheel is 80m/s (for specially ordered);
3. With two-axis linkage feeding, the machine tool is equipped with worktable (Z axis) and a wheel head (X axis) driven by AC servomotor and ball screws, with maximum fast feed speed of 10m/min;
4. The machine tool can be provided with various types of diamond dressers (installed on the rear side of the work head) according to the needs of customers, thus realizing precise numerical control trimming and automatic compensation;
5. The machine tool is provided with an imported or a domestic active measuring device, thus realizing the closed-loop control of grinding process;
6. The machine tool adopts an imported advanced CNC system and 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
As middle and high grade CNC machine tools, NCG320 CNC cylindrical grinding Machine is independently developed on the basis of applying new technologies and rich experience of designing and manufacturing CNC grinding machines. Characterized by the universalization, high-degree modularization, high rigidity, high efficiency, high adaptability, high precision, easy to operate and reliable performance, these machines are suitable for the mass productive processing of automobile engine crankshaft, camshaft, differential housing, flange plate, and parts of transmission system, such as transmission shaft, half shaft, gear (wheel) shaft, etc. In addition, they also can be applied in the small-scale high precision productions in workshops of military industries, aviation industry, aerospace industry and common precision machining.
1. With the rational layout and 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 high rotary precision and good rigidity. The linear speed of the grinding wheel can reach 60m/s (for specially ordered) and that of CBN grinding wheel is 80m/s (for specially ordered);
3. With two-axis linkage feeding, the machine tool is equipped with worktable (Z axis) and a wheel head (X axis) driven by AC servomotor and ball screws, with maximum fast feed speed of 10m/min;
4. The machine tool can be provided with various types of diamond dressers (installed on the rear side of the work head) according to the needs of customers, thus realizing precise numerical control trimming and automatic compensation;
5. The machine tool is provided with an imported or a domestic active measuring device, thus realizing the closed-loop control of grinding process;
6. The machine tool adopts an imported advanced CNC system and 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;
As middle and high grade CNC machine tools, NCG320 CNC cylindrical grinding Machine is independently developed on the basis of applying new technologies and rich experience of designing and manufacturing CNC grinding machines. Characterized by the universalization, high-degree modularization, high rigidity, high efficiency, high adaptability, high precision, easy to operate and reliable performance, these machines are suitable for the mass productive processing of automobile engine crankshaft, camshaft, differential housing, flange plate, and parts of transmission system, such as transmission shaft, half shaft, gear (wheel) shaft, etc. In addition, they also can be applied in the small-scale high precision productions in workshops of military industries, aviation industry, aerospace industry and common precision machining.
1. With the rational layout and 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 high rotary precision and good rigidity. The linear speed of the grinding wheel can reach 60m/s (for specially ordered) and that of CBN grinding wheel is 80m/s (for specially ordered);
3. With two-axis linkage feeding, the machine tool is equipped with worktable (Z axis) and a wheel head (X axis) driven by AC servomotor and ball screws, with maximum fast feed speed of 10m/min;
4. The machine tool can be provided with various types of diamond dressers (installed on the rear side of the work head) according to the needs of customers, thus realizing precise numerical control trimming and automatic compensation;
5. The machine tool is provided with an imported or a domestic active measuring device, thus realizing the closed-loop control of grinding process;
6. The machine tool adopts an imported advanced CNC system and 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 NCG320 CNC Cylindrical Grinding Machine
| Model | Unit | NCG320 | |
|---|---|---|---|
| Max. swiveling diameter | mm | Φ350 (14”) | |
| Distance between centers | mm | 750 / 1000 / 1500 (30”/ 39”/ 59”) | |
| Center height | mm | 180 (7”) | |
| Max. grinding diameter | mm | Φ320 (13”) | |
| Max. workpiece weight between centers | kg | 150 | |
| Control System | FANUC/ SIEMENS | ||
| Grinding wheel | OD x W x ID | mm | Φ750×120×Φ305/Φ500(CBN) |
| Linear speed | mm/s | 45/60/80 (CBN) | |
| Wheel head | Total travel | mm | 330 (13”) |
| Feed speed | mm/min | 0.1-5000 | |
| Min. setting unit | mm | 0.001 | |
| Oblique angle | degree | 90° | |
| Worktable | Type | Two layer conical degree adjusting worktable | |
| Feed speed | mm/min | 0.1-5000 | |
| Min setting unit | mm | 0.001 | |
| Work head | Center | MT5 | |
| Rotating speed | rpm | 30-300; stepless | |
| Tailstock | Center | MT5 | |
| Travel of center | mm | 60 (2.4”) | |
| Electrical system | Power of wheel spindle motor | kW | 18.5 |
| Torque of wheel head feeding motor | Nm | 22 (FANUC)/ 27(SIEMENS) | |
| Torque of worktable feeding motor | Nm | 22 (FANUC)/ 27(SIEMENS) | |
| Power of work head spindle motor | kW | 22 (FANUC)/ 27(SIEMENS) | |
| 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 | 45 |
| Spindle bearings oil tank | L | 45 | |
| Internal grinding | Power of internal grinding motor | kW | 11 |
| Range of internal grinding | mm | Φ16-Φ125 | |
| Max. length of internal | mm | 160 | |
| Max. workpiece weight held by chuck | kg | 30 | |
| Net weight | kg | 10000 / 11000 / 13000 | |
Working accuracy (standard test specimen)
| Inspection item | NCG320 |
| Roundness | 0.003mm |
| Consistency of the longitudinal section diameter | 0.008mm |
| Roughness: longitudinal grinding | Ra 0.2μm |
| Roughness: plunge-cut grinding | Ra 0.4μm |
| Roughness: end face grinding | Ra 0.63μm |
Products
Download
FORTUNE PACIFIC LIMITED © All Rights Reserved.
Knee Type Milling Machine: Precision Versatility for Industrial Manufacturing
What is a Knee Type Milling Machine?
A knee type milling machine is a fundamental machine tool distinguished by its vertically adjustable worktable mounted on a "knee" casting. This knee moves precisely up and down a fixed column via a screw mechanism, enabling accurate Z-axis positioning crucial for diverse milling operations.
Working Principle
The core principle involves a rotating milling cutter removing material from a workpiece secured to the table. The adjustable knee mechanism allows controlled vertical movement (Z-axis), while the table provides longitudinal (X-axis) and transverse (Y-axis) travel. This 3-axis control facilitates complex machining of flat, angular, and contoured surfaces.
Key Applications
- Tool & Die Making: Precision molds, jigs, fixtures
- Prototyping: Rapid part development
- Maintenance Shops: Equipment repair & part fabrication
- General Machining: Slotting, drilling, facing, keyway cutting
- Aerospace & Automotive: Component manufacturing
Distinctive Features & Advantages
- Vertical Adjustability: Knee movement enables quick workpiece height changes
- Rigid Construction: Robust cast iron frame ensures stability
- Manual & CNC Options: Traditional control or computer numerical precision
- Turret Design (Common): Swiveling milling head for multi-angle machining
- Wide Workpiece Compatibility: Handles various sizes and shapes
Primary Classifications
- Vertical Knee Mill: Spindle axis perpendicular to table (most common)
- Horizontal Knee Mill: Spindle axis parallel to table (for heavy stock removal)
- Universal Knee Mill: Table swivels for complex angular cuts
- Turret Mill: Head rotates on turret for flexible positioning
Main Components
- Base & Column: Primary support structure
- Knee: Vertically moving saddle supporting the table
- Saddle & Table: Hold and position the workpiece (X/Y axes)
- Milling Head: Houses spindle, motor, and quill (Z-axis)
- Arbor/Spindle: Rotating shaft holding cutting tools
- Controls: Manual handwheels or CNC interface
Evolution & Industry Significance
Since their development in the late 19th century, knee-and-column mills revolutionized machining. The iconic Bridgeport design (1938) popularized the turret style. While CNC machining centers dominate high-volume production, knee mills remain indispensable for flexibility, ease of use, and cost-effectiveness in job shops, schools, and repair facilities worldwide.
Fortune Pacific: Your Knee Mill Solution
At Fortune Pacific, we engineer durable, high-precision knee type milling machines for demanding applications. Explore our range of vertical mills, horizontal mills, and CNC-ready models designed to enhance your workshop's capabilities. Discover the ideal machine for your metalworking, prototyping, or toolmaking needs.
Keywords: Knee Type Milling Machine, Vertical Milling Machine, Horizontal Mill, Turret Mill, Knee-and-Column Mill, Milling Machine for Sale, Industrial Milling, Metalworking Equipment, Workshop Machinery, CNC Mill, Toolroom Mill, Precision Machining, Fortune Pacific, Machine Tool Manufacturer.