Wilton 4400A, 4200A, 4300A manual Operating Instructions, Adjusting the Belt Sander Arm

Operating Instructions

These sanders can be used to remove stock from a wide variety of machinable materials. Different materials require different grit types and grades to achieve the de- sired stock removal rate and surface finish. Please consult with your abrasive materials supplier for specific recom- mendations on the correct grit material and grade required for your specific needs.

When removing stock from soft materials (wood, plas- tic, etc.) these machines are typically called "sanders." When removing stock from hard materials (cast iron, steel, etc.) they are referred to as "grinders". The word "sander" is used, more-or-less consistently, throughout this manual. It refers to the machines and not the type of abrasive finish- ing being performed.

Before operating your sander, please read the basic instructions on safe machine usage on the preceding two pages.

Figure 1: Locking handle for belt table

Using the Indexing Lock Handle

The lock handle is spring loaded and can be reposi- tioned on its shaft to permit easy locking and unlocking.

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Belt Sander

The sanding belt must be in good condition, at proper tension, and tracking correctly, before doing any sanding, grinding or other abrasive machining operations. Refer to the section on Track Mechanism Maintenance if you have any problems with belt tension or tracking.

Adjusting the Belt Sander Table

You can tilt the table in a range between 20o upward and 45o downward. A single locking handle on the side of the table is used to lock and unlock the table to permit adjustment.

There are two positive lock stop positions: at 90o (that is, at a right angle to the platen) and at 45o downward (es- sentially 90o + 45o or 135o total to the platen.)

To Tilt the Belt Sander Table:

1.Unlock the locking handle on the side of the table.

2.Using the pointer and scale, set the angle to any re- quired angle between 20o upward and 45o downward.

3.Lock the lock handle.

To Tilt the Table to Exactly 45o:

1.Flip out the stop bracket (see Figure 20).

2.Unlock the locking handle.

3.Move the table until it contacts the stop bracket.

4.Lock the table lock handle.

CAUTION: NEVER ADJUST THE TABLE ANGLE

WHILE THE SANDER IS RUNNING. ALWAYS TURN THE MOTOR OFF BEFORE ADJUSTING THE TABLE ANGLE.

To Reposition the Handle:

1.Pull outward against its spring.

2.Rotate the handle to the position you require.

3.Release the handle and its spring will return it to the correct operating position.

Adjusting the Belt Sander Arm

The arm which holds the sanding belt can be posi- tioned at a full vertical position, a full horizontal position, or at any angle in between which is convenient to the type of sanding you are doing.

A positive stop mechanism is used to permit quick adjustment to the vertical or horizontal positions.

To Adjust to Vertical:

1.Unlock both of the lock bolts. These are located under the arbor cover.

2.Move the arm to vertical until it contacts its stop.

3.Tighten both of the lock bolts, and replace arbor cover.

To Adjust to Horizontal:

1.Unlock both of the lock bolts.

2.Move the arm to horizontal until it contacts its stop. (See Figure 3.)

3.Tighten both of the lock bolts and replace arbor cover.

To Adjust the Arm to Any Angle Between Vertical and Horizontal:

1.Unlock both of the lock bolts.

2.Use a machinist's protractor and level to set the arm to the required angle.

3.Tighten both of the lock bolts and replace arbor cover.