Blade Guide Bearing

Adjustment

Proper adjustment of the blade guide bearings is critical to efficient operation of the cut-off saw. The blade guide bearings are adjusted at the Factory. They should rarely require adjustment. When adjustment is required, adjust immediately. Failure to maintain proper blade adjustment may cause serious blade damage or inaccurate cuts.

It is always better to try a new blade when cutting performance is poor. If performance remains poor after changing the blade, make the necessary adjustments.

If a new blade does not correct the problem, check the blade guides for proper spacing. For most efficient operation and maximum accuracy, provide 0.001 inch clearance between the blade and the guide bearings. The bearings will still turn freely with this clearance. If the clearance is incorrect, the blade may track off the drive wheel.

CAUTION: CHECK THE BLADE TO MAKE SURE THE WELDED SECTION IS THE SAME THICKNESS AS THE REST OF THE BLADE. IF THE BLADE IS THICKER AT THE WELD, THE GUIDE BEARINGS MAY BE DAMAGED.

If required, adjust the guide bearings as follows:

1. Two blade guides are used in each set of blade

guides. The inner blade guide is fixed; the outer

blade guide is adjustable. The outer blade guide

is adjusted using a knurled knob on the operator

side of the blade guide assembly.

5. Tighten the center locking screw with an Allen 5.

5.Tighten the center locking screw with an Allen wrench while holding the eccentric bushing in position with the 3/4-inch wrench.

6.When the adjustment is correct, the guide bearing should rotate freely with slight pressure of the finger (with the blade stopped).

7.Adjust blade-edge bearings so they just touch the back edge of the blade (see figure 19).

Concentric Bushing

Blade Guide

Bearings

Socket Cap Screw

Eccentric

Bushing

Carbide

Guides

Knurled Knob

Figure 13: Adjustment of Guide Bearing

Test Cutting to Verify

Adjustment Accuracy

2.

A guide bearing is provided on the innermost

 

side of the saw blade. The guide bearing is

 

mounted on an eccentric bushing.

3.

Hold the bushing with a 3/4-inch wrench and

 

loosen the center locking screw with an Allen

 

wrench (see figure 12).

4.

Position the bearing by turning the bushing. Set

 

the clearance at approximately 0.001 inch.

INCORRECT

CORRECT

Outer

Inner

 

Roller

Roller

 

1.Clamp in vise and mark top of barstock here

2.Cut off a slice of the bar stock

3.Rotate stock in vise so mark is at bottom

4. Cut off a new slice from the stock

13

Locking Screw

5.Measure here...

New slice

6. ...measure here

7.Differences between measurements at edges of disc should be less than .003 inches per inch per side of stock diameter

Figure 12: Blade-To-Blade Guide Orientation

Figure 14: Cutting a Test

Page 13
Image 13
Jet Tools J-7060 operating instructions Blade Guide Bearing Adjustment, Test Cutting to Verify Adjustment Accuracy

J-7060 specifications

Jet Tools J-7060 is a highly regarded model in the woodworking community, known for its reliability and precision. This bandsaw is designed to cater to both hobbyists and professional woodworkers, offering a robust platform for a variety of cutting tasks. Its powerful motor and thoughtful engineering make it stand out in a crowded market.

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