Blade Back

The body of the blade not
including tooth portion

 

 

 

 

Gage

The thickness of the blade

 

 

 

 

 

Width

The tip of tooth to back of blade

 

 

 

 

 

Set

The bending of teeth right or left

 

 

 

 

 

Tooth

The cutting portion of saw blade

 

 

 

 

 

Tooth Pitch

The distance from one tooth tip to
the next

 

 

 

 

 

T.P.I.

The number of teeth per inch
measured gullet to gullet

 

 

 

 

 

Gullet

The curved area between the
tooth points

 

 

 

 

 

Gullet Depth

The distance from the tooth tip to
the bottom of the gullet

 

 

 

 

 

Tooth Face

The surface of the tooth on which
the chip is formed

 

 

 

 

 

Tooth Flank

The angled back surface of the
tooth opposite the tooth face

 

 

 

 

 

Tooth Rake Angle

The angle of the tooth face
measured with respect to a line
perpendicular to the cutting
direction of the saw

 

 

 

 

 

Tooth Tip

The cutting edge of the saw tooth

 

 

 

 

Here's where the blade makes the cut. The tooth design variables include shape, position, set, type and spacing. The combination of these variables will determine whether the blade can move easily through your material without binding or becoming clogged with chips.

 

 
Recurring sequence of teeth - one set right, one set left, and one unset.

 

 
Recurring sequence with more than two set teeth before an unset tooth. For example: left, right, left, right, straight, etc. tooth pattern.

 

 
Set sequence depends on the number of teeth in the variable pitch tooth pattern.

 

 
Groups of teeth, usually 3 or 4, set to each side in a controlled pattern with an unset tooth between groups.

 

 
Every tooth set alternately to the left and right.

 

 

 


 
  • Varying Gullet Depth
  • 0° Rake Angle
  • Variable Tooth Spacing

 
Advantages
  • Excellent Chip Carrying Capacity
  • Reduces Harmonic Vibration
Benefits
  • Improves Blade Life
  • Reduces Noise
     
  • Cuts Smoother & More Efficiently

 

 
  • Varying Gullet Depth
     
  • Variable Tooth Spacing
     
  • Positive Rake Angle

 
Advantages
  • Better Chip Formation
     
  • Excellent Chip Carrying Capacity
     
  • Reduces Harmonic Vibration
     
  • More Aggressive Cutting

 

 Benefits
 
  • Cuts Smoother, Cuts Faster
     
  • Wide Range of Applications
     
  • Reduces Noise
     
  • Easier Chip Generation

 
  • Equally Spaced Teeth
     
  • 0° Rake Angle

 
Advantages
  • Excellent Chip Carrying Capacity

 

 Benefits
  • General Purpose

 
  • Wide Flat Gullets
     
  • 0° Rake Angle
     
  • Equally Spaced Teeth

 
Advantages
 
  • Excellent Chip Carrying Capacity
     
  • Provide Coarse Pitch on Narrow Bands
     
  • Flat Gullets
Benefits
  • Excellent Cutting for Non-Metallic &
    Non-Ferrous Applications, (Wood, Plastic,
    Brass, Copper, Bronze & Aluminum)
  • Help Break “Stringy” Chips

 

 
  • Wide rounded Gullets
     
  • Equally Spaced Teeth
     
  • Positive Rake Angle

 
Advantages
  • Excellent Chip Carrying in Non-Metallic
    Applications
  • Positive Rake Provides Better Tip Penetration with Less Feed Pressure
Benefits
  • Good Cutting Performance in Discontinuous Chip
    Forming Materials (Cast Iron)
  • Fast Cutting with Good Surface Finish

 

 

 

 

Band saw tooth size is determined by the size and type of matrial to be cut and the desired finish. Select a pitch based on the chart to the left. Find material dimension on chart and move right for appropriate teeth per inch.

For angle, tubing, pipe, and other structural shapes, find the wall thickness in size column & move right for tooth size.

Click here for info about pipe wall thickness.

 
 

 

  
   

 

 

Blade Break-In Extremely Important!
The extremely sharp tooth points and edges of new, unused blades must be broken in before applying full feed pressure to the blade. A good analogy is that of writing with a freshly sharpened wooden pencil.
 

Recommended Procedure

  • Maintain proper blade speed for the material to be cut.
     
  • Reduce blade feed pressure or feed rate by 50% for the first 50 to 100 square inches of material cut.
     
  • Gradually increase feed pressure or feed rate after break-in to full pressure or rate.

 

 

 

 





 

 

 





 

 

Materials 1-7
  • Structural Steel Shapes
  • Carbon Steel
  • Free Machining Steel
  • Manganese Steel
  • Molybdenum Steel
  • Chrome Moly Steel
  • Nickel Chrome Moly Steel
Materials 8-14
  • Nickel Moly Steel
  • Chromium Steel
  • Chrome Vanadium Steel
  • Silicon Steel
  • Cold Work Die Steel
  • Hot Work Steel
  • Shock Resistant Steel
Materials 15-20
  • Special Purpose Steel
  • Water Hardening Steel
  • High Speed Steel
  • Austenitic Stainless Steel
  • Ferritic Stainles Steel
  • Martensitic Stainless
Materials 21-26
  • Nickel Based Alloys
  • Titanium
  • Maraging Steel
  • Bronze
  • Aluminum
  • Cast Iron

 

 

*Reduce speeds by 50% for carbon blades

 

 

Bar Diameters 6.25-10.00/Bar Area, In2 30.68-78.54

 
 

 

 

Problem 1-3
  • Premature Blade Breakage
  • Premature Dulling of Teeth
  • Inaccurate Cut
Problem 4-7
  • Band Leading in Cut
  • Chip Welding
  • Teeth Fracture
  • Irregular Break
Problem 8-10
  • Teeth Stripping
  • Wear on Back of Blades
  • Rough Cut
Problem 11-13
  • Wear Lines, Loss of Set
  • Twisted Blade
  • Blade Wear

 

 

 

 

You can improve the productivity of your metal cutting operation by paying close attention to the chips made by the blade cutting through metal. This chart shows some of the common problems that can be discovered and solved by paying attention to chips.