CG630H Cylindrical Grinding Machine
- CG630H Cylindrical Grinding MachineDownload
| Model | Unit | CG630 |
|---|---|---|
| Type | H | |
| Center height | mm | 370 (15″) |
| Work length to be ground | mm | 2000,3000,4000,5000(79″, 118″, 157″,197″) |
| Max. work dia. to be ground | mm | Φ30-630 (1-25″) |
| Max. work height | kg | 3000 |
| Headstock and tailstock center tapered-bore | Metric #80 | |
| Headstock driving-plate rotating-speed (stepless) (adjustable) | r/min | 10-100 |
| Wheel peripheral velocity | m/s | 17.5/35 |
| Min. intermittent feed | mm | 0.0025 |
| Machine weight (net / gross weight) | 2000mm | 11300 / 15600kg |
| 3000mm, | 13200 / 17500kg | |
| 4000mm, | 15000 / 19000kg | |
| 5000mm | Case 1: 21000 / 26000kg Case 2: 5000 / 6500kg |
|
| Package Dimension: (L x W x H) | 2000mm | 5920 x 2950 x 2350 mm |
| 3000mm, | 8850x 2950 x 2350 mm | |
| 4000mm, | 10800 x 2950 x 2350mm | |
| 5000mm | Case 1: 13100 x 2750 x 2100mm Case 2: 3300 x 2250x 2200mm |
| Roundness | mm | 0.0025 mm |
|---|---|---|
| Dia. Uniformity in the long. section | mm | 0.012 mm |
| Surface roughness | mm | Ra0.32 µm |
Main application and features
1. Used for grinding cylindrical surface requiring accuracy-class IT6-IT7, and is suitable for single-piece or small batch production;
2. Worktable longitudinal movement is carried out by means of hydraulic driver with infinitely variable speed, or by hand wheel driver. Wheel head cross feed is provided with auto. Hydraulic micro intermittent-feed and rapid advance & retract, and also with rough and fine feed by means of hand wheel;
3. Work rotating speed is realized in accordance with the electric-adjusted infinitely variable speed, and driven by AC frequency-conversion motor;
4. Spindle is supported by hydro-static-pressure bearings, for raising ground surface quality;
5. Wheel head cross feed is provided with magnetic-grating digital display unit for displacement, also equipped with grinding indicator for the convenience of operation (special order);
Standard accessories
1. Steady-rest: Ø30-Ø200mm; Ø200-Ø350mm;
2. Wheel periphery dresser: 1set;
3. Wheel hub: 2set;
4. Measuring bridge-plate: 1set;
5. Leveling wedge:
Special accessories
1. Grinding indicator;
2. Center grinding device;
3. Wheel balancing stand;
4. Steady-rest: Ø350—Ø500mm;
1. Used for grinding cylindrical surface requiring accuracy-class IT6-IT7, and is suitable for single-piece or small batch production;
2. Worktable longitudinal movement is carried out by means of hydraulic driver with infinitely variable speed, or by hand wheel driver. Wheel head cross feed is provided with auto. Hydraulic micro intermittent-feed and rapid advance & retract, and also with rough and fine feed by means of hand wheel;
3. Work rotating speed is realized in accordance with the electric-adjusted infinitely variable speed, and driven by AC frequency-conversion motor;
4. Spindle is supported by hydro-static-pressure bearings, for raising ground surface quality;
5. Wheel head cross feed is provided with magnetic-grating digital display unit for displacement, also equipped with grinding indicator for the convenience of operation (special order);
| Model | Unit | CG630 |
|---|---|---|
| Type | H | |
| Center height | mm | 370 (15″) |
| Work length to be ground | mm | 2000,3000,4000,5000(79″, 118″, 157″,197″) |
| Max. work dia. to be ground | mm | Φ30-630 (1-25″) |
| Max. work height | kg | 3000 |
| Headstock and tailstock center tapered-bore | Metric #80 | |
| Headstock driving-plate rotating-speed (stepless) (adjustable) | r/min | 10-100 |
| Wheel peripheral velocity | m/s | 17.5/35 |
| Min. intermittent feed | mm | 0.0025 |
| Machine weight (net / gross weight) | 2000mm | 11300 / 15600kg |
| 3000mm, | 13200 / 17500kg | |
| 4000mm, | 15000 / 19000kg | |
| 5000mm | Case 1: 21000 / 26000kg Case 2: 5000 / 6500kg |
|
| Package Dimension: (L x W x H) | 2000mm | 5920 x 2950 x 2350 mm |
| 3000mm, | 8850x 2950 x 2350 mm | |
| 4000mm, | 10800 x 2950 x 2350mm | |
| 5000mm | Case 1: 13100 x 2750 x 2100mm Case 2: 3300 x 2250x 2200mm |
| Roundness | mm | 0.0025 mm |
|---|---|---|
| Dia. Uniformity in the long. section | mm | 0.012 mm |
| Surface roughness | mm | Ra0.32 µm |
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.
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