… GH800 CNC6 Large-scale CNC Gear Hobbing Machine
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GH800 CNC6 Large-scale CNC Gear Hobbing Machine
  • GH800 CNC6 Large-scale CNC Gear Hobbing Machine

GH800 CNC6 Large-scale CNC Gear Hobbing Machine

GH800 CNC6 odvalovacie is of 6 CNC axes: A--hob head swivel; B--spindle rotation; C--worktable rotation; X--radial feed motion; Y--tangential feed motion (hob shifting); Z--axial feed motion.
  • GH800 CNC6 Large-scale CNC Gear HobbingDownload
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Technical parameters of GH800 CNC6 Large-scale CNC Gear Hobber
Model Unit GH800 CNC6
CNC system   SIEMENS 840D; 6-axis
Max workpiece diameter mm Φ800 (32”)
Max module mm 16
Max axial travel mm 600 (24”)
No. of teeth   6-600
Max hob diameter and length mm Φ220x260 (8.7x10”)
Spindle taper bore   ISO 50
Worktable surface diameter mm Φ750 (30”)
Max hob head swivel angle degree ±45
Central distance between hob and worktable mm 75-560 (3-22”)
Distance between hob axis and worktable surface mm 200-800 (7.9-32”)
Distance between center end face and worktable surface mm 500-1100 (20-43”)
Hob tangential travel mm 220 (8.7”)
Max spindle speed r/min 275
Max worktable speed r/min 24
Radial / tangential / axial rapid travel mm/min 1500
Total power / main motor power kVA/kW 67/30
Net weight kg 27000
 
Standard accessories
1. Hob arbor assembly: Φ40mm;            
2. Hydraulic, lubrication and cooling system;

3. Chip conveyor;                         
4. Auto hob arbor clamping device;

5. Oil mist collector;                        
6. Vibration isolating pad;

7. Tools for installation and adjustment;
 
Optional accessories
1. FANUC 31i CNC system;                 
2. Hob arbor assembly:
Φ32, 50, 60mm;
3. Deburring cutter;                          
4. Auto loading & unloading system;

5. Hob adjusting device;                     
6. Workpiece fixture;


Applications 
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH800 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears, crowning or slightly tapered gears, worm wheels and spline etc. GH800 CNC6 odvalovacie are used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery etc.
 
Features 
GH800 CNC6 odvalovacie is of 6 CNC axes: A--hob head swivel; B--spindle rotation; C--worktable rotation; X--radial feed motion; Y--tangential feed motion (hob shifting); Z--axial feed motion. Four coordinated control axes: B, C, X and Z (or B, C, Y and Z).
Auto overload monitoring and alarm devices for spindle.
Quick retraction protection: in case of power off or failure occurred, synchronously and quickly retract hob.
Symmetric construction of the machine bed ensures stable thermal balance.
Adopt large power AC spindle motor, power is transferred to cutter spindle by high precision helical gearing. Adopt a one-tooth difference clearance-eliminating mechanism to improve transmission accuracy and rigidity.
Large hydrostatic bearings and super precision double worm gearings system are used for worktable.
Bulky parts are of high rigidity, column is of double-wall, rib-reinforced and symmetric construction,
Guideways for axes X, Y and Z are of ample hardened steel guideway, linear recirculating roller guidance systems are preloaded, ensure the guideways have high rigidity and accuracy.
Applications 
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH800 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears, crowning or slightly tapered gears, worm wheels and spline etc. GH800 CNC6 odvalovacie are used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery etc.
Features 
GH800 CNC6 odvalovacie is of 6 CNC axes: A--hob head swivel; B--spindle rotation; C--worktable rotation; X--radial feed motion; Y--tangential feed motion (hob shifting); Z--axial feed motion. Four coordinated control axes: B, C, X and Z (or B, C, Y and Z).
Auto overload monitoring and alarm devices for spindle.
Quick retraction protection: in case of power off or failure occurred, synchronously and quickly retract hob.
Symmetric construction of the machine bed ensures stable thermal balance.
Adopt large power AC spindle motor, power is transferred to cutter spindle by high precision helical gearing. Adopt a one-tooth difference clearance-eliminating mechanism to improve transmission accuracy and rigidity.
Large hydrostatic bearings and super precision double worm gearings system are used for worktable.
Bulky parts are of high rigidity, column is of double-wall, rib-reinforced and symmetric construction,
Guideways for axes X, Y and Z are of ample hardened steel guideway, linear recirculating roller guidance systems are preloaded, ensure the guideways have high rigidity and accuracy.
Technical parameters of GH800 CNC6 Large-scale CNC Gear Hobber
Model Unit GH800 CNC6
CNC system   SIEMENS 840D; 6-axis
Max workpiece diameter mm Φ800 (32”)
Max module mm 16
Max axial travel mm 600 (24”)
No. of teeth   6-600
Max hob diameter and length mm Φ220x260 (8.7x10”)
Spindle taper bore   ISO 50
Worktable surface diameter mm Φ750 (30”)
Max hob head swivel angle degree ±45
Central distance between hob and worktable mm 75-560 (3-22”)
Distance between hob axis and worktable surface mm 200-800 (7.9-32”)
Distance between center end face and worktable surface mm 500-1100 (20-43”)
Hob tangential travel mm 220 (8.7”)
Max spindle speed r/min 275
Max worktable speed r/min 24
Radial / tangential / axial rapid travel mm/min 1500
Total power / main motor power kVA/kW 67/30
Net weight kg 27000

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.