Ryobi HBG620, HBG825A Owner's Operating Manual
OWNER’S
OPERATING MANUAL
150mm (6”) & 200mm (8”) BENCH GRINDERS
MODELS HBG620 & HBG825A
Double
Insulated
THANK YOU FOR BUYING A RYOBI BENCH GRINDER
Your new Bench Grinder has been engineered and manufactured to Ryobi's high
standard for dependability, ease of operation, and operator safety. Properly cared
for, it will give you years of rugged, trouble free performance.
CAUTION: Carefully read through this entire owner's manual before
using your new Bench Grinder.
Pay close attention to the Rules for Safe Operation, Warnings and Cautions. If you
use your Bench Grinder properly and only for what it is intended, you will enjoy
years of safe, reliable service.
Thank You again for buying Ryobi tools.
SAVE THIS MANUAL FOR FUTURE REFERENCE.
NOTE: Patent Pending.
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GENERAL SAFETY INSTRUCTIONS
1. Keep guards in place and in working order.
2. Remove adjusting keys and wrenches. Form habit of checking to see that keys and
wrenches are removed from tool before turning it on.
3. Keep work area clean. Cluttered areas and benches invite accidents.
4. Don’t use in dangerous environment. Don’t use power tools in damp or wet location,
or expose them to rain. Keep work area well lit.
5. Keep children away. All visitors should be kept at a safe distance from work area.
6. Make workshop childproof with padlocks, master switches or by removing starter keys.
7. Don’t force the tool. It will perform better and safer at the rate for which it was
designed.
8. Use right tool. Don’t force tool or attachment to do a job for which it was not designed.
9. Wear proper apparel. No loose clothing, gloves, neckties, rings, bracelets or other jew-
ellery which may get caught in moving parts. Non-slip footwear is recommended. Wear
protective hair covering to contain long hair.
10. Always use safety glasses. Also use face or dust mask if grinding operation is dusty.
Everyday eyeglasses only have impact resistant lenses. They are NOT safety glasses.
11. Secure Work. Use clamps or a vise to hold work when practical. It’s safer than using
your hand and it frees both hands to operate tool.
12. Don’t overreach. Keep proper footing and balance at all times.
13. Maintain tools with care. Keep tools sharp and clean for best and safest performance.
Follow instructions for lubricating and changing accessories.
14. Disconnect tools before servicing and when changing accessories such as grinding
wheels.
15. Reduce the risk of unintentional starting. Make sure switch is in OFF position before
plugging in.
16. Use recommended accessories. Consult the owner’s manual for recommended
accessories. The use of improper accessories may cause risk of injury to persons.
17. Never stand on tool. Serious injury could occur if the tool is tipped or if the grinding
wheel is unintentionally contacted.
18. Check damaged parts. Before further use of the tool, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform
its intended function. Check for alignment of moving parts, binding of moving parts,
breakage of parts, mounting and any other conditions that may affect its operation. A
guard or other part that is damaged should be properly repaired or replaced.
19. Never leave tool running unattended. Turn power off. Don’t leave tool until it has
come to a complete stop.
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SPECIAL SAFETY INSTRUCTIONS FOR BENCH GRINDER
1. Disconnect power supply plug before replacing wheels or covers.
2. Replace cracked wheel immediately.
3. Always use guards and eyeshields.
4. Ensure tool rests and eyeshields are properly adjusted.
5. Do not overtighten wheel nut.
6. Adjust distance between wheel and tool rest to maintain 1.6mm (1/16”) or less separation as the diameter of the wheel decreases with use.
7. Use grinding wheel suitable for speed of grinder - above 3600 RPM.
8. Ensure wheel rotate freely before switching on power.
9. Stand beside the bench grinder when switching on power.
10. After fitting new grinding wheel, leave machine running for at least one minute. If the
wheel is faulty it will break during this test period.
11. Don’t operate the grinder with the wheel guard off.
12. Don’t use the grinding wheel to cut anything.
13. Don’t use anything to overload the the grinding wheel.
14. Use a wheel dresser only to remove burrs on the grinding wheel.
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SPECIFICATIONS
Model: ......................................HBG620 ....................................HBG825A
Motor:........................................1/3HP / 250 watts ......................1/2HP/ 375 watts
No Load Speed: ........................2850 RPM ................................2850 RPM
Wheel Size: ..............................150 x 19mm wide ....................200 x 25mm wide
Wheel Bore Size: ......................12.7mm ....................................12.7mm
Net Weight: ..............................8.5 kg ........................................17 kg
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UNPACKING
Unpack the carton and check your machine to see that the following parts are included.
1. Main Body (switch and electrical cord are connected).
2. Accessories:
• One set of tool rests and necessary screws, nuts and washers.
• One set of eyeshields, spark breakers and necessary screws,
nuts and washers.
NOTE: If you find any parts missing or damaged, contact the dealer for exchange
or replacement.
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