Blade Guide Bearing Adjustment

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.

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

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

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

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

Wilton 7060 manual Blade Guide Bearing Adjustment, Test Cutting to Verify Adjustment Accuracy