INSTRUCTION MANUAL FOR 5” DISC GRINDERS
Operation Procedures

1.Connect the coupler to the air inlet ❶ on the rear side of tool.
2.Make sure the disc cover ❷ is firmly mounted in place. Make
sure the diameters of the grinding stone and the hole are suiteach tool.
Grinding stone dia.

❶Air inlet

Max. rpm:12,000rpm
Grinding stone size :125φmm x hole 22φmm

Grinding stone dia.

Disc receiverDisc receiver❹Safety leverHole size

Hole size
Disc nut

Disc nut

Cap screw

Washer❸Spindle lock button

Cap screw

Adjustable disc cover can be moved with turning to right/left.

Before use, make sure the adjustable disc cover is firmly
locked to the tool in position.
Lock lever

270°❷Disc cover

Accessories : 5” Disc (1), Pin spanner (1),Hex. wrench (1),
Safety instructions (1)Max. rpm:12,000rpm
Grinding stone size :125φmm x hole 22φmm❶Air inlet

Lock lever❹Safety lever

Ajustable disc cover

3.Pour approx. 0.5cc (2 to 3 drops) of the oil through the coupler.
Connect it to the air hose, and run for 3 to 5 seconds tocirculate the oil.
4.When the grinding stone is installed, press the spindle lockbutton ❸ at the angle head, and the spindle will stop. Turn it
counterclockwise with the pin spanner, and firmly tighten thespindle.

105°

Accessories : 5” Disc (1), Pin spanner (1),Hex. wrench (1),
Safety instructions (1)Spindle lock button

Spindle lock button

Push

Push

①

①
Disc nut

Disc receiver②

Pin spannerDisc receiver

Cap screwDisc nut
Spindle❷Disc cover❸Spindle lock button③

Hex. wrench

Disc nut
Cap screwDisc nut
Spindle②

Pin spanner③

Hex. wrench

5.The start switch is a safety
lever ❹ with safety stopper.
The safety lever will belocked automatically. Press
the safety stopper torelease the lock.

〈Sefety lever〉

ONON

Safety stopperOFF

SI-2515LA / SI-2520L

OFF

Safety stopper

ModelNumber

Disc Size
mmSpindle Size

Free Speed
Max・rpm

Out Put
Watt

Weightkg/(lb)Noise LeveldBA/(power)

Vibration a/km/s2

Avg.Air
Consumption
CFM

SI-2515LA

125 (5″)M14×2

12,000570

1.93 (4.27)

85/(96)

11.0/（3.6）

2.8/(1.3)

SI-2520L

125 (5″)M14×2

12,000610

1.85 (4.07)

76.4/(87.4)

1.56/（0.51）

2.8/(1.3)

Noise levels according to ISO 15744:2008,ISO 11203:2009

Vibration level according to ISO 28927

WARNING
Never use the edge of grinding stone.
Never use without the disc cover.
Never install the grinding stone where failure such as breakage, abnormal abrasion, crack, andchip has been found.
Confirm operations within the maximum circumferential speed and rpm, as indicated on thegrinding stone.
Before use, make sure the grinding stone is firmly installed to the tool in place and no
misalignment.

CAUTION
Careless drop of the tool will result in damage of the tool or components. Therefore, be sure topolitely handle the tool.
Operate the tool within the air pressure of 0.63MPa (6.5kg/cm2). If operated in high pressure,the maximum allowance speed will be exceeded, which may result in damage of components.
Before or after daily use, lubricate a few drops of air tool oil from the hose attached port.
The compressed air containing dust or/and moisture will result in damage of tool. Be sure tooperate the tool with air through the drainage and air filter.
If revolution failure or/and irregular noise occurred, do not continue operation furthermore.
Forced operation of tool may result in serious troubles.
Regarding to this product, if inconvenient claims or troubles occurred, contact the productdistributor.

AIR SUPPLY
0.63MPa
Pressure at the working (90PSI 6.3bar)
10m
Max Hose Length(30ft)
Daily
Lubrication
Lubricating oil

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MADE IN JAPAN