Grizzly G8750 Compound Slide Table Instructions

Grizzly G8750 Compound Slide Table

Introduction

The Model G8750 features 12″ of longitudinal travel and 71⁄2″ of cross travel, adjustable gibs, dovetailed ways, Acme thread leadscrews, vernier scales, and 9⁄16″ T-slots.

Inventory

A. Compound Slide Table
B. Handwheels
C. Handwheel Lock Nuts
D. Handwheel Handles
E. Keys 4 x 4 x 10| 1
2
3
3
3

Tools Needed

• Open-End Wrench 10mm
• Hex Wrench 4mm
• Hex Wrench 5mm
• Standard Screwdriver #2

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1
1
1
| WARNING
Wear safety glasses during the assembly and adjustment steps.
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Assembly

1. Secure the compound slide table by bolting both sides of the base to your machine.

2. Place the 4 x 4 x 10 key onto the cross slide (Y-axis) leadscrew, slide the handwheel on to the leadscrew over the key, then hand tighten the lock nut.

3. Hold the lock nut in position with a wrench and tighten the set screw, as shown in Figure 1.
   Figure 1. Securing the handwheel.
   
   

4. Install the handwheel handle.

5. Repeat Steps 2–4 to install the longitudinal (X-axis) handwheels. Make sure you install these simultaneously. Otherwise, the leadscrew could accidentally unwind from the table and introduce backlash.

Adjusting Backlash

The amount the handwheels rotate without moving the table is the backlash. Generally, 0.005″– 0.010″ of backlash is acceptable.

When the handwheels are correctly installed they contact the leadscrew support blocks ( Figure 2 ), and the table moves when the handwheels are rotated.

• Figure 2. Leadscrew support blocks.
  

The table will not move if either handwheel is not touching a leadscrew support block.

To adjust backlash:

1. Rotate one of the X-axis handwheels until it  contacts the leadscrew support block.
2. On the opposite side of the table, push the other handwheel against the leadscrew support block, loosen the set screw ( see Figure 1 ) several turns, hand-tighten the lock, then tighten the set screw.

Adjusting Gibs

The function of the gibs is to remove play in the table and cross slide without causing the slides to bind.

Each gib has multiple lock nuts and gib screws that need to be adjusted. When adjusting, make your adjustments equally and in small increments, and test the feel of the table movement while doing so until it feels right.

To adjust the gibs:

1. Loosen the lock nuts (see Figure 3 ).
   Figure 3. Gib screws and lock nuts.
   
   

2. Depending on current table movement, slightly loosen or tighten each gib screw in equal amounts, then move the table and test the feel. When properly adjusted, the gibs should offer slight resistance without binding.

3. Tighten the lock nuts without moving the gib screws.

Lubrication

1. Keep the compound slide in good working order by lubricating all moving parts frequently with general purpose oil.
2. Keep a thin layer of general purpose oil on the table and other non-painted surfaces when not in use to help prevent rust.

G8750 Parts Breakdown and List

Parts breakdown provided for reference only. Not all parts shown are available for purchase.

Customer Support

If you need help with your new compound slide table, call our Tech Support at: 570-546-9663.

COPYRIGHT © MARCH, 2012 BY GRIZZLY INDUSTRIAL, INC., NOVEMBER, 2015 (ST)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #BL14920 PRINTED IN CHINA
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References

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