Ballscrews

Salient Features :

»	Heavily ribbed bed with flat guideways with good damping, torsional rigidity and stiffness. The table slide moving on bed guideways provides radial feed through manually driven screw and nut.
»	Column with suitable ribs is fixed on bed. It houses the gear box with index and differential mechanisms and axial feed change gears. The main motor with speed change gear drive is mounted on top of column. The spindle speed change is effected through speed change gears. Column also houses the machine control panel and electricals.
»	Compact vertical slide moves on flat guideways of column. The axial feed is through change gears and precision ballscrew and nut for backlash free axial feed. The vertical slide carries hob head mounted on circular T-slot and worm and worm wheel for swivelling of hob head. A circular scale and vernier are provided for setting swivel angle.
»	Rigid and compact hob head mounted on vertical slide carries hob slide and main spindle. A fly wheel is provided to minimise speed fluctuations arising due to intermittant cutting during hobbing. The shifting of hob is manual through screw and nut. The slide is manually clamped after shifting.

Specifications :

		H250	H400
Max. dia. of work/module Spindle speeds	mm	250 / 6	400 / 8
AC induction motor in steps	rpm	90-500	45-240 or 90-480
Infinitely variable AC spindle motor	rpm	80-480(opt)	40-240 or 8-480 (opt.)
Axial travel	mm	245	300
Radial travel - Min. / Max.	mm	10 / 210	30 / 300
Axial Feed (Infinitely variable)	mm/wr	0.23-6.35	0.23-6.35
Radial Feed (Infinitely variable)	mm/wr	0.1-12	0.1-15
Dia. / Length of hob	mm	130 / 150	186 / 180
Spindle Taper		MT4	MT5
Main motor power	kW	6.1/7.5	6.1/7.5
Weight of the machine	kgf	5000	7000