Marathon Abrasive Company, Inc.

Marathon's hot-pressed resin bond conditioning wheels are produced in a compact, in-line and continuous process.  A temperature and humidity controlled environment and new equipment provides precision weighing and mixing of ingredients.  All products are speed tested at 1-1/2 times the maximum operating RPM speed of the wheel.

CURRENT WHEEL SIZES
OD	X	Width	X	ID
36" (914mm)		6" (152mm)		12" (305mm)
25" (635mm)		3" (76mm)		12" (305mm)
24" (610mm)		3" (76mm)		12" (305mm)
20" (508mm)		2.5" (64mm)		8" (203mm)
Sizes are adjusted to accommodate customer's equipment.

Compared to resin or vitrified products, Marathon's unique grinding wheel formulations will achieve higher removal rates on difficult-to-grind stainless, titanium, nickel and cobalt based alloys while providing excellent wheel life, bar diameter control, and surface finishes.  Many customers also experience less noise and reduce heat, smoke, and electric consumption.  There performance attributes contribute to product quality, the operators' work environment and the reduction of coolant chiller system requirements.

TYPICAL RESULTS ATTAINABLE WITH MARATHON CORKED-FILLED
RUBBER BOND CENTERLESS GRINDING WHEELS
	SURFACE FINISH			MAXIMUM REMOVAL
	- - - - - ACHEVABLE - - - - -			- - FROM DIAMETER - -
GRAIN SIZE	RA	MICROMETERS		INCHES	MM
120	16	0.4		0.002	0.05
180	12	0.3		0.001	0.025
240	10	0.25		0.0005	0.012
320	7	0.2		0.0002	0.005
500	4	0.1		0.00005	0.0012

STANDARD CENTERLESS WHEEL SIZES
Nominal OD	X	Nominal Width	X	Nominal ID
24" (610mm)		6" (152mm)		12" (305mm)
24" (610mm)		8" (203mm)		12" (305mm)
20" (508mm)		6" (152mm)		12" (305mm)
15.748" (400mm)		7.874" (200mm)		8" (203mm)
19.685" (500mm)		11.812" (300mm)		9.843" (250mm)
Sizes are adjusted to accommodate customer's equipment.