Blade Pitch (TPI)

The chart below is a basic starting point for choosing teeth per inch (TPI) for variable tooth pitch blades and standard raker set bi-metal blades/HSS blades. However, for exact specifica- tions of bandsaw blades that are correct for your operation, contact the blade manufacturer.

To select the correct blade pitch:

1.Measure the material thickness. This mea- surement is the length of cut taken from where the tooth enters the workpiece, sweeps through, and exits the workpiece.

2.Refer to the "Material Width/Diameter" row of the blade selection chart in Figure 20, and read across to find the workpiece thickness you need to cut.

3.Refer to the "Material Shapes" row and find the shape of the material to be cut.

4.In the applicable row, read across to the right and find the box where the row and column intersect. Listed in the box is the minimum TPI recommended for the variable tooth pitch blades.

5.The "Cutting Speed Rate Recommendation" section of the chart offers guidelines for vari- ous metals, given in feet per minute (FPM). Choose the speed closest to the number shown in the chart.

Material Width/Diameter

Material Shapes

Teeth Per Inch (TPI) for Variable Pitch Blades

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOOTH SELECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mm

50

 

 

75

 

 

100

 

 

150

 

200

 

 

 

250

 

 

300

350

 

 

400

 

 

450

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5/8

 

 

 

4/6

 

 

 

 

 

 

 

3/4

 

 

 

 

 

 

 

 

 

 

 

 

2/3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/4

 

 

 

 

 

 

 

2/3

 

 

 

 

 

 

1.4/2.5

 

 

 

 

 

 

 

 

1.5/.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

3

4

 

5

6

7

8

9

 

10

11

12

13

14

15

16

17

18

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CUTTING SPEED RATE RECOMMENDATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Material

Speed FPM

 

 

Material

Speed FPM

 

Material

 

Speed FPM

 

Material

 

 

Speed FPM

 

 

 

 

 

 

 

 

 

 

 

 

 

(M/Min)

 

 

 

 

 

 

 

 

 

 

(M/Min)

 

 

 

 

 

 

 

 

 

(M/Min)

 

 

 

 

 

 

 

 

(M/Min)

 

 

 

 

 

 

 

 

Carbon

196~354

 

Tool Steel

 

203

 

 

 

 

Alloy

 

 

111~321

 

Free Machining

150~203

 

 

 

 

 

 

 

 

 

 

Steel

 

(60) (108)

 

 

(62)

 

 

 

 

Steel

 

 

(34) (98)

 

Stainless Steel

(46) (62)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Angle

 

180~220

 

High-Speed

75~118

 

 

 

Mold Steel

 

 

246

 

 

 

 

Gray

 

 

108~225

 

 

 

 

 

 

 

 

 

 

Steel

 

(54) (67)

 

Tool Steel

(25) (36)

 

 

 

 

 

(75)

 

 

 

Cast Iron

 

 

(33) (75)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thin

 

180~220

 

 

Cold-Work

95~213

 

 

 

 

Water

 

 

242

 

 

 

Ductile

 

 

65~85

 

 

 

 

 

 

 

 

 

 

 

Tube

 

(54) (67)

 

 

Tool Steel

(29) (65)

 

 

 

Hardened

 

 

(75)

 

 

Austenitic

 

 

(20) (26)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tool Steel

 

 

 

 

 

 

 

Cast Iron

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aluminum

220~534

 

 

Hot-Work

 

203

 

 

 

Stainless

 

 

85

 

 

Malleable

 

 

321

 

 

 

 

 

 

 

 

 

 

 

Alloy

 

(67) (163)

 

 

Tool Steel

 

(62)

 

 

 

 

Steel

 

 

(26)

 

 

Cast Iron

 

 

(98)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copper

229~482

 

Oil-Hardened

203~213

 

 

 

CR Stainless

 

85-203

 

 

 

Plastics

 

 

 

 

220

 

 

 

 

 

 

 

 

 

 

 

Alloy

 

(70) (147)

 

 

Tool Steel

(62) (65)

 

 

 

 

Steel

 

 

(26) (62)

 

 

 

 

(67)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 20. General guidelines for blade selection and speed chart.

G8144Z/G8145Z/G8146Z

-25-

(Manufactured Since 6/11)

 

Page 27
Image 27
Grizzly G8145Z, G8146Z, G8144Z owner manual Blade Pitch TPI, To select the correct blade pitch

G8144Z, G8146Z, G8145Z specifications

Grizzly G8145Z, G8146Z, and G8144Z are a trio of high-performance wood lathe machines designed for serious woodworkers and artisans. Each model in this series provides distinct features and capabilities that cater to various turning needs, from hobbyist projects to professional craftsmanship.

The Grizzly G8145Z is particularly known for its robust construction and versatility. It features a powerful 2 HP motor that delivers ample torque for handling both hard and softwoods with ease. The lathe's variable speed control allows users to adjust speeds from 600 to 2400 RPM, providing flexibility for a wide range of turning applications. The 14-inch swing over bed and a 40-inch between centers make it suitable for turning larger pieces, with precise control afforded by its heavy-duty cast iron bed.

The G8146Z model ups the ante with enhanced features geared toward professional woodturners. It boasts a larger 16-inch swing and a 48-inch distance between centers, accommodating more extensive workpieces. The innovative digital readout provides accurate spindle speed and position information, which enhances user precision and convenience. Additionally, the G8146Z comes with an advanced electronic speed control system that maintains consistent speeds under load, ensuring smooth operation no matter the project.

Complementing this impressive lineup is the G8144Z, a lathe designed with both user-friendliness and versatility in mind. With a 1 HP motor, it is perfectly suited for beginners and intermediate woodworkers alike. The G8144Z features a 12-inch swing and a 36-inch bed length, making it an excellent choice for smaller projects while still capable of handling a variety of turning tasks. Its easy-to-use tailstock and tool rest adjustments make setup and operation straightforward, allowing users to focus on their creativity rather than on mechanisms.

All three models come with several safety features, including a quick release tailstock and a spindle lock, ensuring secure operation. Moreover, they are equipped with robust dust ports that help maintain a clean workspace. Each lathe also supports various accessories, such as different types of tool rests and faceplates, giving woodworkers the options they need for specialized turning.

In conclusion, the Grizzly G8145Z, G8146Z, and G8144Z wood lathes stand out in their class due to their powerful motors, adjustable speeds, and user-friendly designs. Whether you’re a novice looking to develop your skills or a seasoned pro producing intricate designs, these lathes provide excellent performance and reliability for all your woodturning projects.