Cylindrical Grinding Machine

Specifications

TECHNICAL DETAILS
MODEL	UNITS	TMT 400/600/800	TMT 1000/1200
SIZE & CAPACITY
Centre height	mm	130	155
Centre distance	mm	600/800	1000/1200
Max. grinding dia for efficiently standard	mm	125	125
WHEEL HEAD
Peripheral surface speed ( Two steps )	m/sec.	28	28
Clockwise	deg.	60	60
Counter clockwise	deg.	45	45
Grinding wheel (diameter x width x bore)	mm	350 x 40 x 127	400 x 40 x 127
INFEED SYSTEM
Rapid Approach	mm	40	40
Increment infeed on dia	mm	0.005	0.005
Infeed with hand wheel	mm	60	60
* Infeed with hand wheel	mm	95	95
** Max. plunge depth on dia	mm	0.75	0.75
Infeed rate on dia varaible	mm/min	0.1 - 6	0.1 - 6
Spark off time	sec.	0 - 30	0 - 30
TABLE TRAVERSE
Max. Stroke	mm	650 - 850	1050 - 1250
Min stroke	mm	10	10
Feed rate	mm/min	30 - 4000	30 - 3500
Dwell at reversal	sec.	0 - 30	0 - 30
Swivel	deg.	-3 + 9	-3 + 6
* Feed rate in steps		6	6
WORK HEAD
Live & dead centre type counter clockwise	deg.	90	90
Taper bore	M T	3	4
spindle speed 6 steps	RPM	45 - 250	45 - 250
** Steplessly variable	RPM	30 - 500	30 - 500
TAIL STOCK
Adjustable pressure, taper bore	M T	3	4
Quill travel	mm	25	25
ELECTRICAL MOTORS
Wheel head	kw.	2.2	3.7
Work head	kw.	0.75	0.75
Internal grinding	kw.	0.75	0.75
Hydraulic pump motor	kw.	0.75	0.75
Coolant pump	kw.	0.10	0.10
Auto Lubrication (Hydraulic only)	kw.	0.09	0.09
* Table feed	kw.	0.37	0.37
INTERNAL GRINDING ATTACHMENT
Spindle housing bore	mm	80	80
Standard spindle dia	mm	60 x 250	60 x 250
Spindle speed standard	RPM	18000	18000
FLOOR AREA
Width	mm	1500	1500
Length	mm	3350 / 3750	4250 / 4650

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

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

Assembly of precision bearings within dust free environment.

All rotating parts are dynamically balanced.

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

In mechanical model, only cross slide faced with TURCITE-B.

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

ROUNDNESS:	Dead center < 0.003 mm. (cone centre ground and lapped) Live spindle < 0.004 mm (dia 75 mm hardened test piece).
SURFACE FINISH :	0.3 μm Ra. ( using 60 grit wheel on hardened test piece)
PARALLELISM:	(Convex) 0.005 mm .( using 600 X 60 mm dia) ( With machine at constant ambient temperature 20 – 25° C and with grinding wheel and coolant suited to material being grounded).