Roll Grinding Machine

Specifications

TECHNICAL DETAILS OF GST - 500 SERIES
MODEL	UNITS	GST -1500-2000-2500-3000
SIZE & CAPACITY
Centre height	mm	250
Centre distance	mm	1500 / 2000 / 2500 / 3000
Max. grinding dia for efficiently grinding (Standard)	mm	300
WHEEL HEAD
Peripheral surface speed ( Two steps )	m/sec.	28
Clockwise	deg.	30
Counter clockwise	deg.	10
Grinding wheel (dia x width x bore)	mm	500 x 63 x 254
INFEED SYSTEM
Rapid Approach	mm	50
Increment infeed on dia	mm	0.005
Infeed with hand wheel	mm	50
*PROGRAMMABLE Y-axis with INC system	mm	0.75
* Max. plunge depth on dia	mm	0.75
*Infeed rate on dia variable	mm/min	0.1 - 6
*Spark off time	sec.	0 - 30
*Incremental at each reversal	mm	0.003 - 0.015
TABLE TRAVERSE
Max. Stroke	mm	1600 - 2100 - 2600 - 3100
Min. stroke	mm	10
Feed rate	mm/min	50 - 1500
Dwell at reversal	sec.	0 - 30
Swivel	deg.	-2 + 6
WORK HEAD
Dead Centre Type counter clockwise	deg.	90
Taper bore	M T	5
Steplessly variable	RPM	20 - 100
TAIL STOCK
Adjustable pressure, taper bore	M T	5
Quill travel	mm	50
ELECTRICAL MOTORS
Wheel head	kw.	7.5
Work head	kw.		2.2
Internal grinding	kw.	0.75
Hydraulic pump motor	kw.	0.75
Coolant pump	kw.	0.10
Auto Lubrication	kw.	0.09
INTERNAL GRINDING ATTACHMENT
Spindle housing bore	mm	80
Standard spindle dia	mm	60 x 250
Spindle speed standard	RPM	18000
FLOOR AREA
Width	mm	2000
Length	mm	5700 - 6700 - 7700 - 8700
* OPTIONAL	SPECIFICATIONS & DESIGNS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

Casting are stress relieved by vibration “FORMULA 62” and in normalizing oven.

Tail stock, wheel & work spindles are heat treated to achieve dimensional stability.

Extremely high precision and maximum operational reliability is accomplished by careful assembly of precision bearings within dust free environment.

Tailstock spindle acting in close tolerance & super finished bore.

All rotating parts are dynamically balanced.

Table & wheel slide faced with anti-friction material TURCITE-B.

Independent lubrication system to the guideways of table and cross slide wheel head.

ROUNDNESS:	Dead center < 0.005 mm. (cone centre ground and lapped) Live spindle < 0.005 mm (dia 75 mm hardened test piece) .
SURFACE FINISH :	0.5 μm Ra. ( using 60 grit wheel on hardened test piece)
PARALLELISM	(convex) < 0.01mm ( using1000 X 70 mm dia) ( With machine at constant ambient temperature 20 – 25° C and with grinding wheel and coolant suited to material being grounded).