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G-1156 - Ryobi

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13. The flange and clamp nut must have same outer diameter.<br />

14. Do not remove the soft paper in the center of the grinding wheel.<br />

(If the paper has been previously removed, insert some soft paper<br />

or rubber between grinding wheel and flange.)<br />

15. Use the tool only for approved applications. Never use coolants or<br />

water or use the tool as a fixed tool.<br />

16. Grip the tool securely with both hands while operating.<br />

17. Ensure that ventilation openings are kept clear when working in dusty<br />

conditions. If it should become necessary to clear dust, first disconnect<br />

the tool from the mains supply (use nonmetallic objects) and avoid<br />

damaging internal parts.<br />

SPECIFICATIONS<br />

G-<strong>1156</strong> G-1256<br />

Grinding wheel 115 mm (4-1/2”) 125 mm (5”)<br />

Frequency 50/60 Hz 50/60 Hz<br />

Voltage* 110V, 230V 110V, 230V<br />

Input 920 W 920 W<br />

Spindle thread M14 M14<br />

No load speed 11,000 min-1 11,000 min-1 Overall length 274 mm (10-3/4”) 274 mm (10-3/4”)<br />

Net weight 1.6 kg (3.5 lbs.) 1.6 kg (3.5 lbs.)<br />

* Be sure to check the nameplate on the product, because the<br />

voltage is subject to change depending on the area in which the<br />

product is to be used.<br />

Maximum circumferential speed of grinding wheel : 4,800 m/min.<br />

(Example of calculation)<br />

4,320 = 3.14 x 125 x 11,000 / 1,000<br />

4,320 : Circumferential speed of grinding wheel<br />

125 : Wheel diameter<br />

11,000 : No load speed of grinder<br />

STANDARD ACCESSORIES<br />

Aux. handle, Wrench<br />

A grinding wheel is included in the standard accessories for some<br />

countries.<br />

APPLICATIONS<br />

(Use only for the purposes listed below.)<br />

1. Grinding<br />

NOISE BUILD-UP<br />

Noise (sound pressure level) in the workplace can exceed 85 dB (A). In<br />

this case, sound insulation and hearing protection measures must be<br />

taken by the operator.<br />

SWITCH (Fig.1)<br />

This tool is started and stopped by sliding and releasing the switch (5).<br />

For the convenience for continuous operation, slide the switch along<br />

then press the front end down to lock it (action A).<br />

To release the lock, press the rear end of the switch (action B).<br />

MOUNTING THE GRINDING WHEEL (Fig.2)<br />

1. Attach the disc flange (6), the grinding wheel (1) and the clamp<br />

nut (7) to the spindle shaft (8).<br />

Be sure the disc flange is properly seated on the spindle shaft.<br />

2. Depress the lock button (4) located on the right side of gear case.<br />

3. Using the wrench (9) provided, tighten the clamp nut in a clockwise<br />

direction.<br />

WARNING!<br />

Check carefully whether or not there are cracks in the wheel.<br />

Replace a cracked wheel immediately.<br />

OPERATING (Fig.3)<br />

KEEP SAFETY GUARDS IN PLACE.<br />

NEVER COVER THE AIR VENTS SINCE THEY MUST ALWAYS BE<br />

OPEN FOR PROPER MOTOR COOLING.<br />

The key to efficient operating is controlling the pressure and surface<br />

contact between the disc and work piece. Flat surfaces are ground at an<br />

acute angle, usually 10 to 20 degrees with the work piece. Allow the disc<br />

to reach full speed before starting to grind. Too great angle causes<br />

concentration of pressure on a small area which may gouge or burn<br />

work surface.<br />

MAINTENANCE<br />

After use, check the tool to make sure that it is in top condition.<br />

It is recommended that you take this tool to a <strong>Ryobi</strong> Authorized Service<br />

Center for a through cleaning and lubrication at least once a year.<br />

DO NOT MAKE ANY ADJUSTMENTS WHILE THE MOTOR IS IN<br />

MOTION.<br />

ALWAYS DISCONNECT THE POWER CORD FROM THE<br />

RECEPTACLE BEFORE CHANGING REMOVABLE OR<br />

EXPENDABLE PARTS (BLADE, BIT, SANDING PAPER ETC.),<br />

LUBRICATING OR WORKING ON THE UNIT.<br />

WARNING!<br />

To ensure safety and reliability, all repairs should be performed by<br />

an AUTHORIZED SERVICE CENTER or other QUALIFIED SERVICE<br />

ORGANIZATION.<br />

SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

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