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Here is 4.5 inch grinding wheel, the grinding wheel is made of high quality silicon carbide grains, It is specially used for grinding stone. It has an advantage of durability and efficient.

SALI 100x3x16mm grinding wheel for stone
Promotion Restriction:	Not eligible for promotion for promotion
Arbor Hole size:	7/8", 22.2mm
Abrasive Wheel Diameter:	4.5", 115mm
Series:	Stone
Ideally Used With:	Angle grinder
Item:	Cut-off wheel 4-1/2"x1/8"x7/8", PK25
Packing:	5pcs each plastic bag; 25pcs each colorful inner box; 200pcs each colorful carton
Mini order:	1 carton each style

115x3x22.2mm grinding wheel for stone we hot-selling.

The silicone carbide divide into black silicone carbide and green silicone carbide.

Contains more than 95% silicon carbide. It is black or dark blue and shiny. The hardness is higher than that of white corundum, it is brittle and sharp, and has good thermal and electrical conductivity. The purpose is to grind cast iron. Brass, aluminum, refractory and non-metallic materials.

Black silicon carbide contains more than 97% silicon carbide. It is green, with higher hardness and brittleness than TH, and good thermal and electrical conductivity. The purpose is to grind cemented carbide, optical glass gemstones, jade, ceramics, honing engine cylinder liners, etc.

Queston: Why it is fast sanding out (not durable)?

Cause Analysis:

1. The cutting workpiece is too hard, the cutting section is too large, the cutting generates high temperature, and the bonding agent is carbonized.

2. The cutting direction of the workpiece is wrong.

3. Incomplete hardening (affected by weather).