VAJRA series Gear Hobbing Machines are 6 Axis Gear Less Gear Hobbing Machines with a stiff Electronic Gearbox (EGB) to give the best synchronization to generate the most accurate gear profiles. These machines are designed to be structurally rigid while UCRIDE ® technology ensures reduced vibration and higher dampening effect.
VAJRA Machines have been incorporated with the latest technology such as Direct-drive for Hob spindle and Work table. This enables our machine to achieve higher hob speeds with the latest cutting tools to give high productivity and quality. Hob head, having a precision spindle bearing arrangement, enables gear cutting. It is driven by a powerful built-in motor capable of delivering ample torque.
CNC Gear Hobbing Machines are advanced gear cutting systems designed for high-precision manufacturing of spur gears, helical gears, splines, sprockets, and worm gears. These machines ensure superior accuracy, high productivity, and reliable performance in modern manufacturing industries.
| Description | Units | Vajra 130 | Vajra 250 | Vajra 400 |
|---|---|---|---|---|
| Nominal workpiece diameter | mm | 150 | 250 | 400 |
| Max. module (in steel of 60-70kg/mm2 tensile strength) | mm | 3 | 6 | 8 |
| Diameter of table | mm | 150 | 250 | 400 |
| Center distance between Work Table and Hob axis (Max/Min) | mm | 210 / 30 | 230 / 30 | 300 / 30 |
| Table top face to bottom face of support arm (Max/Min) | mm | 580 / 230 | 630 / 230 | 630 / 230 |
| Distance between table top & Hob head center (Max/Min) | mm | 550 / 250 | 600 / 250 | 600 / 250 |
| Maximum Hob Dia x Length | mm | Ø90 x 100L | Ø180 x 180L | Ø180 x 180L |
| Taper of the Hob arbor | - | HSK-C63 | HSK-C63 | HSK-C63 |
| Hob shift | mm | 120 | 170 | 170 |
| Table speed, Max | rpm | 150 | 150 | 150 |
| Hob speed (Infinitely variable) | rpm | 1800 | 1800 | 80-800 / 80-1800 |
| Axial rapid traverse | mm/min | 1 to 10000 | 1 to 10000 | 1 to 10000 |
| Radial rapid traverse | mm/min | 1 to 10000 | 1 to 10000 | 1 to 10000 |
| Tangential traverse | mm/min | 1 to 10000 | 1 to 10000 | 1 to 10000 |
| Spindle Power | kW | 9 | 12 / 18 | 14 / 27 |
| Max. swivel of Hob head | deg | ±45 | ±45 | -35 to +45 |
| Controller | - | Siemens 828D / Fanuc Oi-MF Plus | Siemens 828D / Fanuc Oi-MF Plus | Siemens 828D / Fanuc Oi-MF Plus |
| Voltage | V | 415 ±6% | 415 ±6% | 415 ±6% |
| Frequency | Hz | 50 ±3% | 50 ±3% | 50 ±3% |
| Total connected load | kVA | 30 | 33 | 55 |
| Weight of the machine (Approx.) | kg | 8000 | 10000 | 13500 |
*Please note machine specifications & dimensions may change without prior notice
Standard Features
Our CNC Gear Hobbing Machine planning and strategy services focus on designing tailored automation solutions that align with your business goals.
- 6 Axis CNC controlled
- Direct Drive technology in spindle and work table
- High precision Electronic gear box (EGB)
- Softwares suitable for Hobbing Spur, helical, Sprocket and Spline
- Servo controlled Hob Shift
- High Clamping torque on the swivel axis
