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MODEL H7760
COMBINATION 2" x 27" BELT
SANDER & 6" GRINDER
OWNER'S MANUAL
COPYRIGHT © NOVEMBER, 2005 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#JK7691 PRINTED IN CHINA
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Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine MUST maintain the original location and readability of the labels on the machine. If any label is removed or becomes unreadable, REPLACE that label before using the machine again. Contact Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.
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Table of Contents INTRODUCTION ............................................................................................................................... 2 Foreword .................................................................................................................................... 2 Contact Info ................................................................................................................................ 2 Machine Data Sheet ................................
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INTRODUCTION Foreword Contact Info We are proud to offer the Model H7760 Combination If you have any comments regarding this manual, 2" x 27" Belt Sander & 6" Grinder. This machine is please write to us at the address below: part of a growing Grizzly family of fine machinery. When used according to the guidelines set forth in Grizzly Industrial, Inc. C this manual, you can expect years of trouble-free, /O Technical Documentation Manager enjoyable operation and proof of Grizzly’s commit- P.
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MACHINE DATA SHEET Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901 MODEL H7760 GRINDER/SANDER COMBO Design Type ......................................................................... Bench Model Overall Dimensions: 3 Height (w/Work Light Extended) ...................................................19 ⁄4" 1 Width ............................................................................................15 ⁄4" 3 Depth ............................
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IDENTIFICATION To help you understand the Model H7760 set up A B and operation instructions, match the list below with the letters in Figures 1 & 2. I A. Wheel Dressing Tool C H B. Work Light C. Eye Shield D. Grinding Wheel E. Grinding Wheel Tool Rest F. Coolant Tray D G. ON/OFF Switch H. Sanding Belt Tool Rest G I. Sanding Belt J. Dust Port E K. Power Plug F L. Sanding Belt Tension Knob Figure 1. H7760 front view. M. Sanding Belt Tracking Knob N. Spark Guard L M N J K Figure 2. H7760 rear vie
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SECTION 1: SAFETY For Your Own Safety, Read Instruction Manual Before Operating this Machine The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measure
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Safety Instructions for Machinery 7. ONLY ALLOW TRAINED AND PROPERLY SUPERVISED PERSONNEL 17. REMOVE ADJUSTING KEYS AND TO OPERATE MACHINERY. Make sure WRENCHES. Make a habit of checking for operation instructions are safe and clearly keys and adjusting wrenches before turn- understood. ing machinery ON. 8. KEEP CHILDREN AND VISITORS AWAY. 18. CHECK FOR DAMAGED PARTS BEFORE Keep all children and visitors a safe dis- USING MACHINERY. Check for binding tance from the work area. and alignmen
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Additional Safety Instructions for Grinders 1. EYE PROTECTION. Grinding causes small 8. SIDE GRINDING. Grinding on the side of particles to become airborne at a high rate wheels can cause the them to break and of speed. ALWAYS wear safety glasses fly apart unless the wheel is rated for side when using this machine. grinding. 2. MOUNTING TO BENCH/STAND. An unse- 9. TOP GRINDING. Grinding on the top of cured grinder may become dangerously wheels greatly increases the risk of work- out of contr
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Additional Safety Instructions for Sanders 1. RESPIRATOR AND SAFETY GLASSES. 7. FEEDING WORKPIECE. Firmly grasp the Always wear a respirator and safety glass- workpiece in both hands and ease it into es while operating the machine. Dust and the machine using light pressure. DO NOT chips are created when sanding. Some jam the workpiece into the machine during debris will be ejected, becoming hazards to operation. Feed the workpiece against the the eyes and lungs. direction of rotation. DO NO
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SECTION 2: CIRCUIT REQUIREMENTS 110V Operation Serious personal injury could occur if you connect the machine to the power source before you have completed the set up pro- cess. DO NOT connect the machine to the power source until instructed to do so. Figure 3. Typical type 5-15 plug & receptacle. Amperage Draw The Model H7760 motor draws the following amps under maximum load: Motor Draw ...........................................3.2 Amps Circuit Recommendations We recommend connecting this
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SECTION 3: SET UP Unpacking Inventory After all the parts have been removed from the carton, you should have the parts shown in Figure 4: Some metal parts may have sharp edges on Inventory Qty them after they are A. Spark Guard ............................................... 1 formed. Please examine B. Wheel Dressing Tool .................................. 1 the edges of all metal C. Eye Shield & Bracket ................................. 1 parts before handling D. Tool Rests .....
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To mount the grinder: Items Needed for 1. Find the best place in your shop to mount the Set Up grinder/sander. —Pick a spot on the workbench that The following items are needed to complete the will allow enough room to move the set up process, but are not included with your size of an anticipated workpiece around machine: the grinder. The operator (and possibly bystanders) should have enough room to Description Qty stand out of the way. Wrench 8mm ......................................
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Tool Rests Spark Guard & Eye Shield The tool rest attaches to the inward side of the guard and provides a surface that must be The spark guard must be installed and positioned used to support the workpiece during operation. 1 ⁄8" from the grinding wheel to minimize sparks Certain types of grinding/sanding may require flying towards the operator. The eye shield must jigs or accessories that will be used with the tool be positioned between the grinding wheel and rests to assure the prope
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Belt Tracking “Tracking” the sanding belt means to center the belt on its rollers, so that it runs balanced and does not make contact with the sides of the belt cover. To track the sanding belt: 1. DISCONNECT THE MACHINE FROM THE POWER SUPPLY! 2. Rotate the grinding wheel. Figure 9. Tracking control knob. 3. As you rotate the grinding wheel, watch how the sanding belt rides on the upper roller. If 6. After the belt is centered, spin the grinding the belt is tracking properly, the sanding
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SECTION 4: OPERATION Test Run Keep loose clothing rolled up and out of the Once mounting is complete and adjustments are way of machinery and done to your satisfaction, you are ready to test the keep hair pulled back. machine. Disconnect power from All grinding wheels have the potential of the machine when per- breaking apart during operation, causing forming any maintenance, serious personal injury or death! Always assembly or adjustments. stand to the side of the grinder when turn-
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Before Grinding Operating Grinder The grinder is a safe tool when used properly. In The grinder is designed for use with hard metals addition to the safety instructions in this manual, only. Soft metals and wood products should only the most important safety consideration is to use be used on the sanding belt, as they will quickly common sense at all times. What may be okay in load the grinding wheel surface and ruin its abra- one situation, may not be safe in another. sive qualities. Read th
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Wheel Care Wheel Dressing Your safety depends, on a large part, on the Dressing restores the grinding wheel with a like- condition of the wheel during grinding. A wheel in new abrasive quality. Whenever the front surface poor condition presents the possibility of breaking of the wheel loses its abrasive qualities (loading apart during rotation, injuring the operator and or polishing), then the wheel should be dressed. A possibly causing property damage. dressing tool is included for this pur
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Wheel Selection Wheel Inspection The Model H7760 only accepts Type 1 wheels Before mounting a new grinding wheel, it must 1 with a ⁄2" bore. be inspected. DO NOT assume that a wheel is in sound condition just because it is new—often, Aluminum oxide and silicon carbide wheels are damage can occur during shipping, with age, or marked in a somewhat uniform manner by all with exposure to moisture. major manufacturers. Understanding these mark- ings will help you understand the capabilities of F
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4. An undamaged wheel will emit a clear metal- 5. Mount the new wheel in the reverse order or lic ring or “ping” sound in each of these spots. as shown in Figure 12. Always make certain A damaged wheel will respond with a dull there is are paper or fiber discs between the thud that has no clear tone. wheel flanges and the wheel itself. Tighten the nut snugly but DO NOT over-tighten. 5. If you determine from the ring test that the Over-tightening can crack the wheel. wheel is damaged, DO NOT
