Grizzly G4186Z User Manual download pdf (Page 27)

G4186Z 18" Bandsaw -25-

There are several key factors to consider in

choosing a blade:

Tooth Pitch - The number of teeth per inch

(TPI) on the blade, also known as tooth

pitch. Select a pitch which will assure that

at least three teeth, but not more than

twelve, are contacting the workpiece while

cutting. This helps to distribute the cutting

forces and avoids tooth breakage.

Tooth Form - There are four common forms

of teeth on the blade:

Regular - Also called standard, teeth are

evenly spaced and the rake angle is 0˚

(See Figure 26). Provides a smooth cut

and is great for cutting curves.

Hook - Large gullets and teeth with a posi-

tive rake angle, very aggressive cutting.

Good for resawing and ripping thick stock.

Skip - Similar to hook with a 0˚ rake angle,

also good for resawing and ripping thick

stock.

Tooth Set - Set is the degree to which the

Bandsaw Blades

A bandsaw blade is a delicate piece of steel that

is subjected to tremendous strain. Be sure you

use quality blades of the proper width for the var-

ious types of cutting operations. The Grizzly

G4186Z 18" Bandsaw accepts 130" blades.

Always use the widest blade possible for the

workpiece you are cutting. Use narrow blades

only for sawing small, abrupt curves and for fine,

delicate work. Bandsaw blades can be purchased

welded, set, and sharpened ready-for-use from

most saw shops. We also supply bandsaw blades

in widths of

4",

8",

2", and

4" and 1" for this

saw. Please refer to our current catalog for prices

and ordering information.

Always select and use good-quality saw blades

and choose the right blade for the job. Poor qual-

ity blades and improper use are often the cause

of premature blade failure.

Many conditions can lead to breakage. Blade

breakage is, in some cases, unavoidable, since it

is the natural result of the peculiar stresses that

bandsaw blades are subjected to. Blade break-

age is also due to avoidable causes. Avoidable

breakage is most often the result of poor care or

judgement on the part of the operator when

mounting or adjusting the blade or support

guides. The most common causes of blade

breakage are: (1) faulty alignment and adjust-

ment of the guides; (2) forcing or twisting a wide

blade around a curve or short radius; (3) feeding

too fast; (4) tooth dullness or absence of sufficient

set; (5) excessive tension; (6) upper blade guide

assembly set too high above the workpiece; (7)

using a blade with a lumpy or improperly finished

weld; and (8), continuously running the bandsaw

when not in use.

Figure 26. Side and front views of a standard

bandsaw blade.

Gullet Line

Gullet

Tooth

Rake Angle

+˚

0˚

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 47 48

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Grizzly G4186Z User Manual Page 27

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