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CNC Cylindrical Gear Hobbing Machine
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GH400 CNC2 CNC3 Heavy-duty CNC Gear Hobber
GH400 CNC2 is of 2-axis CNC: X-axis--radial feed motion; Z-axis--axial feed motion. GH400 CNC3 is of 3-axis CNC: X-axis--radial feed motion; Y-axis--tangential feed motion (or hob shifting motion); Z-axis--axial feed motion.
- GH400 CNC2 CNC3 Heavy-duty CNC Gear HobberDownload
Technical parameters of GH400 CNC2; GH400 CNC3 Heavy-duty CNC Gear Hobbing Machine
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Change gears;
3. Hydraulic, lubrication and cooling system;
4. Chip conveyor;
5. Auto hob arbor clamping device;
6. Cylinder for workpiece clamping;
7. Isolating vibration pad;
8. Tools for installation and set up;
Optional accessories
1. Deburring device;
2. Hob arbor assembly: Φ27, 31.75, 32, 50, 60mm;
3. Workpiece auxiliary support;
4. Workpiece fixture;
Features
| Model | Unit | GH400 | |
|---|---|---|---|
| Type | CNC2 | CNC3 | |
| CNC system | FANUC 0i; 2-axis | FANUC 0i; 3-axis | |
| Max workpiece diameter | mm | Φ400 (16”) | Φ400 (16”) |
| Max module | mm | 12 | 12 |
| Max axial travel | mm | 400 (16”) | 400 (16”) |
| Min No. of teeth | 10 | 10 | |
| Max hob diameter and length | mm | Φ200x240 (7.8x9.5”) | Φ200x240 (7.8x9.5”) |
| Spindle taper bore | 7:24 | 7:24 | |
| Worktable diameter x bore diameter | mm | Φ450x120 (18x4.7”) | Φ450x120 (18x4.7”) |
| Max hob head swivel angle | degree | ±45 | ±45 |
| Central distance between hob and worktable | mm | 45-315 (1.8-12”) | 45-315 (1.8-12”) |
| Distance between hob axis and worktable surface | mm | 280-680 (11-27”) | 280-680 (11-27”) |
| Distance between center end face and worktable surface | mm | 390-890 (15-35”) | 390-890 (15-35”) |
| Max hob tangential travel | mm | 200 (7.9”) | 200 (7.9”) |
| Max spindle speed (B-axis) | r/min | 80-450 | 80-450 |
| Max worktable speed (C-axis) | r/min | 35 | 35 |
| Rapid radial travel | mm/min | 1600 | 1600 |
| Rapid tangential travel (Y-axis) | mm/min | 2000 | 2000 |
| Rapid axial travel | mm/min | 600 | 600 |
| Linear coordinate resolution of CNC axes | mm | 0.001 | 0.001 |
| Total power / main motor power | kVA/kW | 45/15 | 45/15 |
| Packing size | mm | 3910×2550×3200 2480×2050×2150 1830×940×2760 1460×1140×2070 |
3910×2550×3200 2480×2050×2150 1830×940×2760 1460×1140×2070 |
| Net weight | kg | 18800 | 18800 |
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Change gears;
3. Hydraulic, lubrication and cooling system;
4. Chip conveyor;
5. Auto hob arbor clamping device;
6. Cylinder for workpiece clamping;
7. Isolating vibration pad;
8. Tools for installation and set up;
Optional accessories
1. Deburring device;
2. Hob arbor assembly: Φ27, 31.75, 32, 50, 60mm;
3. Workpiece auxiliary support;
4. Workpiece fixture;
Features
1. GH400 CNC2 is of 2-axis CNC: X-axis--radial feed motion; Z-axis--axial feed motion.
2. GH400 CNC3 is of 3-axis CNC: X-axis--radial feed motion; Y-axis--tangential feed motion (or hob shifting motion); Z-axis--axial feed motion.
3. Multi-square and axial L cycles, auto change speed during radial feed; climb or conventional hobbing.
4. With symmetric and double-wall construction bed and circulating slots on bed bottom, the circulating oil ensures stable thermal distribution of the machine.
5. Ample rectangle guideways covered with Teflon; it has a compact construction and good static & dynamic rigidity.
6. Short and super precision gear train; pre-loaded ballscrew gearing for axial and radial feed.
7. Super precision rolling bearing for hob spindle ensures the capacity of powerful and high speed cutting; the cutting speed of the coated hob is up to 120m/min.
8. Adopt large diameter gearing with one-tooth difference to eliminate clearance and ensure good rigidity.
9. Super precision double-worm gearing to eliminate clearance and adjust damp.
Features
1. GH400 CNC2 is of 2-axis CNC: X-axis--radial feed motion; Z-axis--axial feed motion.
2. GH400 CNC3 is of 3-axis CNC: X-axis--radial feed motion; Y-axis--tangential feed motion (or hob shifting motion); Z-axis--axial feed motion.
3. Multi-square and axial L cycles, auto change speed during radial feed; climb or conventional hobbing.
4. With symmetric and double-wall construction bed and circulating slots on bed bottom, the circulating oil ensures stable thermal distribution of the machine.
5. Ample rectangle guideways covered with Teflon; it has a compact construction and good static & dynamic rigidity.
6. Short and super precision gear train; pre-loaded ballscrew gearing for axial and radial feed.
7. Super precision rolling bearing for hob spindle ensures the capacity of powerful and high speed cutting; the cutting speed of the coated hob is up to 120m/min.
8. Adopt large diameter gearing with one-tooth difference to eliminate clearance and ensure good rigidity.
9. Super precision double-worm gearing to eliminate clearance and adjust damp.
Technical parameters of GH400 CNC2; GH400 CNC3 Heavy-duty CNC Gear Hobbing Machine
| Model | Unit | GH400 | |
|---|---|---|---|
| Type | CNC2 | CNC3 | |
| CNC system | FANUC 0i; 2-axis | FANUC 0i; 3-axis | |
| Max workpiece diameter | mm | Φ400 (16”) | Φ400 (16”) |
| Max module | mm | 12 | 12 |
| Max axial travel | mm | 400 (16”) | 400 (16”) |
| Min No. of teeth | 10 | 10 | |
| Max hob diameter and length | mm | Φ200x240 (7.8x9.5”) | Φ200x240 (7.8x9.5”) |
| Spindle taper bore | 7:24 | 7:24 | |
| Worktable diameter x bore diameter | mm | Φ450x120 (18x4.7”) | Φ450x120 (18x4.7”) |
| Max hob head swivel angle | degree | ±45 | ±45 |
| Central distance between hob and worktable | mm | 45-315 (1.8-12”) | 45-315 (1.8-12”) |
| Distance between hob axis and worktable surface | mm | 280-680 (11-27”) | 280-680 (11-27”) |
| Distance between center end face and worktable surface | mm | 390-890 (15-35”) | 390-890 (15-35”) |
| Max hob tangential travel | mm | 200 (7.9”) | 200 (7.9”) |
| Max spindle speed (B-axis) | r/min | 80-450 | 80-450 |
| Max worktable speed (C-axis) | r/min | 35 | 35 |
| Rapid radial travel | mm/min | 1600 | 1600 |
| Rapid tangential travel (Y-axis) | mm/min | 2000 | 2000 |
| Rapid axial travel | mm/min | 600 | 600 |
| Linear coordinate resolution of CNC axes | mm | 0.001 | 0.001 |
| Total power / main motor power | kVA/kW | 45/15 | 45/15 |
| Packing size | mm | 3910×2550×3200 2480×2050×2150 1830×940×2760 1460×1140×2070 |
3910×2550×3200 2480×2050×2150 1830×940×2760 1460×1140×2070 |
| Net weight | kg | 18800 | 18800 |
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Change gears;
3. Hydraulic, lubrication and cooling system;
4. Chip conveyor;
5. Auto hob arbor clamping device;
6. Cylinder for workpiece clamping;
7. Isolating vibration pad;
8. Tools for installation and set up;
Optional accessories
1. Deburring device;
2. Hob arbor assembly: Φ27, 31.75, 32, 50, 60mm;
3. Workpiece auxiliary support;
4. Workpiece fixture;
1. Hob arbor assembly: Φ40mm;
2. Change gears;
3. Hydraulic, lubrication and cooling system;
4. Chip conveyor;
5. Auto hob arbor clamping device;
6. Cylinder for workpiece clamping;
7. Isolating vibration pad;
8. Tools for installation and set up;
Optional accessories
1. Deburring device;
2. Hob arbor assembly: Φ27, 31.75, 32, 50, 60mm;
3. Workpiece auxiliary support;
4. Workpiece fixture;
Products
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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.
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- 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.
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