Southbend SB1023 用户手册

For Machines Mfg. Since 8/09

Model SB1023

-19-

Most grinding wheels from major manufacturers 

are marked in a somewhat uniform manner. 

Understanding these markings will help you 

understand the capabilities of various wheels. 

Always refer to the manufacturer’s grinding 

recommendations when selecting a wheel for 

your project.

The grinding wheel you choose will depend on 

several factors related to the operation you plan 

to perform. The hardness of the material you 

will be grinding and the surface finish you desire 

are the two primary factors to consider when 

selecting a grinding wheel.

An example of the basic format for wheel 

numbering is shown below. The wheel in this 

example is a "36A60LV".

36

A

60 

L

V

Material 

Removal

Increased

Decreased

Surface Finish

Rough

Smooth

Workpiece  

Hardness

Soft

Hard

Width of Cut

Wide

Narrow

The prefix is a manufacturer-specific designation 

and will vary depending on the manufacturer.

Use the charts below as a basic wheel selection 

outline for most grinding operations.

A

Aluminum Oxide: For grinding 

common steel.

WA

White Aluminum Oxide: For 

grinding harder metals (heat 

treated steel, carbon steel, alloy 

steel, etc.).

H

For grinding high speed steel.

C

Silicon Carbide: For grinding cast 

iron and non-ferrous metals.

CG

Ceramic Grain: For extremely hard 

metals, such as tungsten carbide.

The ideal grit for an operation depends on a 

number of considerations. Use the table below to 

choose a grit suitable for your desired results.

The grade of a wheel is an indicator of its 

hardness based on an alphabetical scale in which 

A is the softest and Z is the hardest.

Workpiece 

Hardness

Hard

Soft

Width of Cut

Wide

Narrow

Feed Rate

Slow

Fast

Wheel Speed

Fast

Slow