Bosch Power Tools 1810PS manual Grinding Wheels, Iso

Grinding Wheels

Industry Color-Coded System

Metal /	Stainless	Asphalt
General Purpose
Concrete /	Pipeline	Aluminum
Masonry

ANSI Standard Marking System

The following chart is an example of the ANSI standard marking system for identifying Bosch grinding wheels and other bonded abrasives: Sample of typical marking: A 30 T-BF

A	30				T				BF
Primary Grain Used	Size of the Abrasive Grain		Hardness of Bond						Type of Bond Used
to Make the Wheel	Very coarse	8-12	Soft		Medium		Hard		B_____ Resinoid
A = Aluminum oxide	Coarse	14-24							BF_ __ Resinoid Reinforced
AS = Aluminum oxide	Medium	30-60	N	P	R	S		T
special	Fine	70-180
C = Silicon carbide	Dust fine	200-800
CS = Silicon carbide
special
Z = Aluminum zirconium

Wheel Configurations and Uses

Bonded abrasive wheels have different configurations depending upon the tool on which the wheel is used and the desired end results. Below are the configurations that a wheel can have.

Type 1A	Type 1	Type 27A	Type 27	Type 28 Type 29			Type 11
(ISO 41)	GRINDING	Cutting	Blending	Grinding		Blending	Grinding
Cutting			Grinding			Grinding
					C			C

C	C	C	C
			C
				B	B

B		B	B		B
A	A	B
		A	A	A	A	A

Straight	Straight	Depressed	Depressed	Saucer-		Flexible	Flared Cup
Wheel	Wheel	Center	Center	shaped		Wheel	Wheel
		Wheel	Wheel	Wheel		Flap Disc
Type 1A	Bench or	Type 27A	Type 27	Type 28		Type 29	Type 11 Steel-
(ISO 41)	Type 1	To be used at	For use on flat	To be used	For blending and		Concrete
Used at a 90°	Used for edge	a 90° angle	surfaces for	for weld	stock removal on		Used for removing
angle for	grinding at a	for light	weld prep,	preparation	uneven surfaces,		excess material
cutting only.	50°-90° angle.	cut-off work.	usually on bar	and de-burring	best used at a		and build-up on
No grinding.	Not for cutting		stock or angle	surfaces. Tool	10° angle. This		large flat surfaces,
	applications.		iron. Tool best	usually used at	allows user to		allowing for
			used at a	a 15° angle, to	use one wheel		maximum surface
			30° angle. No	cover greater		for grinding	area coverage
			cutting.	surface area	and finishing.		– tool used
				and allow			perpendicular
				better visibility.			to work.
A = Wheel diameter	B = Wheel width or thickness C = Wheel bore

Toll Free:  877-BOSCH-99 Boschtools.com 167