Assessments - 4, GPA: 3.3
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Save these instructions. Specifications Electrical Input 120 V~ / 60 Hz / 8.4 A 1 HP (rated) / 2 HP (peak) No Load Speed 1750 RPM Accessory Dia. 10” Max. Arbor Size 20mm Unpacking When unpacking, make sure that the item is intact and undamaged. If any parts are missing or broken, please call Harbor Freight Tools at 1-800-444-3353 as soon as possible. Ref Description Quantity 1 Bench Grinder Unit 1 3 Eye Shield 2 4 Shield Supports 2 REV 09e ASSEMBLY The 10” Bench Grinder requires minor assembly. The assembly instructions below are written for the left side but the right side is identical. Refer to the Parts List, at the back of this manual, for the individual part numbers. Tool Rest Assembly Bolt the BENCH GRINDER UNIT (1) 1. to a stable workplace. Tool Rest Knob (8) Tool Rest (7) FIGURE 1 – Removing the Tool Rest Knob 2. Facing the front of the BENCH GRINDER UNIT, remove the front TOOL REST KNOB, and loosen the rear TOOL REST KNOB (8) as in Figure 1. Tool Rest Knob (8) Tool Rest (7) FIGURE 2 – Moving Tool Rest 3. Pivot the tool rest down and forward so that it is in a horizontal position and replace the front TOOL REST KNOB as shown in Figure 2. Adjust the TOOL REST (7) to the 4. desired distance from the GRINDER WHEEL (2). In no circumstances should the TOOL REST be closer than 1/8” from the GRINDER WHEEL. Tighten both TOOL REST KNOBS.5. Eye Shield Assembly Bolts (15) Eye Shield (3) Washers (17)Nuts (16) FIGURE 3 – Attaching the Eye Shields and Eye Supports 1. Attach the EYE SHIELDS (3) to the SHIELD SUPPORTS (4) using BOLTS (15), NUTS (16), and WASHERS (17) as shown in Figure 3. FIGURE 4 – Attaching the Eye Shield to Wheel CoverShield Supports (4) Nut (13) Washers (14)Bolt (12) Eye Shield (3) 2. Remove the BOLT (12) and NUT (13) from the upper grinder housing as shown in Figure 4. Align the EYE SHIELD Assembly 3. with holes and replace the WHEEL COVER BOLT and NUT. Adjust the EYE SHIELD to the de4. sired position and tighten the WHEEL COVER NUT. GRINDING WHEEL ASSEMBLY Remove Grinding Wheel FIGURE 5 – Assembling the GrinderWashers (14) Eye Shield (3) Nut (13) Grinding Wheel (2) Wheel Cover (6) Spindle (9) Wheel Mounting Washer (11) Wheel Mounting Nut (10) Bolt (12) 1. Remove both GRINDING WHEEL COVERS (6) by unscrewing their BOLTS (12) and NUTS (13) as shown in Figure 5. Place adjustable wrenches on both 2. WHEEL MOUNTING NUTS (10). To remove the right hand GRINDING 3. WHEEL (2) turn its WHEEL MOUNTING NUT clockwise while keeping the left hand WHEEL MOUNTING NUT stationary. To remove the left hand GRINDING WHEEL turn its WHEEL MOUNTING NUT counterclockwise while keeping the right hand WHEEL MOUNTING NUT stationary. Slide the WHEEL MOUNTING 4. WASHER (11) off of the SPINDLE (9). Slide the GRINDING WHEEL off of 5. the SPINDLE (9). Installing Grinding Wheel Note: Do not use aluminum oxide grinding wheels when grinding nonferrous metals such as aluminum and brass. Use silicon carbide grinding wheels for all nonferrous metals Make sure the inside WHEEL 1. MOUNTING WASHER (11) is on the SPINDLE (9) with its concave side facing out as shown in figure 5. Place the GRINDING WHEEL (2) on 2. the SPINDLE. Place the outside WHEEL MOUNT3. ING WASHER (11) on the SPINDLE with its concave side facing in. Place the WHEEL MOUNTING NUT 4. (10) on the SPINDLE and tighten. Caution; do not over tighten the WHEEL MOUNTING NUT as it may crack the GRINDING WHEEL. Replace both WHEEL COVERS (6) 5. and secure with their BOLTS (12), NUTS (13), and WASHERS (14). Dressing the Wheel New wheels frequently are not true and during operation often become grooved, glazed, out of round, or misshapen. At these times, they will need dressing. You will need a grinding wheel dresser for this operation. Dressers are available from Harbor Freight Tools. Standing to the side of the wheel, let 1. the Bench Grinder run for a full minute with no load. If the GRINDING WHEEL runs straight and true, you will not need to dress it prior to operating. If it is not, proceed with the following steps. With the Bench Grinder running, grip 2. the handle of the dresser firmly with one hand and the arm of the dresser with the other. Using the TOOL REST (7) as sup3. port, apply the dresser evenly to all surfaces of the GRINDING WHEEL. Continue step 3 until the GRINDING 4. WHEEL is straight and true. OPERATION Caution: The grinding wheels must always be checked for cracks of imperfections. This is done with the “ring test”. Tap the wheel gently near the outer rim with the handle of a screwdriver; you should hear a clear bell- like ringing. If a dull thud occurs do not use the wheel! This means the wheel has been damaged and will, most likely, come apart during normal operations. Operation Notes The 10” Bench Grinder comes assembled with a coarse GRINDING WHEEL (2) and a fine GRINDING WHEEL. Determine which wheel is which before attempting to use the Bench Grinder. The workpiece will quickly become heated. Frequently quench the workpiece in water during the grinding pr...