Tip Replacement Period
If chip abrasion deepens, the chamfering size will be changed.
If a cutter mark protrudes for replacement target, a chip angle should bechanged or a chip replaced with a new product.

Cutter mark

INSTRUCTION MANUAL FOR AIR BEVELER(Safety lever)Accessories
Carbide tip (3)360°Option

T-type allen wrench (1)3mm Allen wrench (1)Guide roller (1)For ≧ 8mm thickness

Guide roller

For ≧ 6mm thickness

Parts No.693-5

Optional carbide tips for SI-4020L, SI-4020
The original carbide tip can be cutting smooth. And it is available octahedral. So it is very economical.
The tip can be used ４ times on the top, and ４ times on the bottom. If an angle changed,it can be ８ times.

R3 Carbide Tip for rounding the edges

360°

C3 Carbide Tip for radiusing the edges
33

3
3(Rotary twist switch)

3R

SAFETY WARNING :Cutting of this product will produce dust that
may be potentially hazardous.
Use adequate ventilation.
Always wear gloves, ear/eye protection, andother protective equipment, when required.

3C

Always shut off air supply before changing
the carbide tip.
The carbide tip rotates at the full speed. If
the holding power is insufficient, the carbide
tip will burst out, which is dangerous.Firmlyand securely mount it onto the cutter holder.

Cooling Air Mechanism
Guide Roller

Cooling Air

Stop Bolt for
Cooling Air

Blow with cooling air automatically for long life
span of carbide tip and for preventing sticking ofcutting chips.

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MADE IN JAPAN

Remove the bolt from guide roller and replacewith cooling air stopping bolt attached whenstop of cooling air is required.

WARNING :Read safety instructions before using or servicing.
Always wear gloves, ear/eye protection, andother protective equipment, when required.
Repetitive motion, or exposure to vibration may
cause injury.
Always shut off air supply before changing thecarbide tip.
Check clamp screws of cutter holder tightbefore using.
Keep hand away from moving parts.
Rated air pressure 6.3bar/90psi max.

Tip Replacement Procedures

1. Connect the coupler onto the air inlet ofhandle on the switch side.

Tip Removal MethodOIL

Preparation for Operation

2. Pour approx. 0.5cc (2 to 3 drops) of theoil through the coupler. Connect it to theair hose, and run for 3 to 5 seconds tocirculate the oil.
3. The switch consists of two kinds ofsafety lever type and rotary twist type.

〈Rotary twist switch〉

1. Lay the tool reversely so that the cutter holder unit can be exposed.

Max.rpm:10,000rpm❶Air inlet

2. The tip is fixed by a clamp screw.
Insert the T-type wrench through the notch hole of the base plate in the tip clamp screw head.
360°
SwivelExhaust360°

3. Retain the tip with fingers from the reverse side so as notto drop. Swinging it left or right, rotate it counterclockwise,
and release the lock for removal.
4. Remove 2 pieces of remaining clamp screw in the sameprocedures.

〈Safety lever〉

Push

Safety lever
ON

High speedOFF

Set upCarbide tip

Carbide tip Mount Method

2. When the points are determined,
set up the tool bit apart from thework, and start the switch slowly.

Max.rpm:10,000rpm

WARNING :Work

Don’t start the tool immediately
after application of the tip to thework. Negligence will give damage
to the tip, or hurt your hand due torebound. Be sure to avoid such awrong operation.

Guide roller❶Air inlet

Cutting

1. If accustomed to running, it is not required to remove
the guide roller. However, it is first required to remove
it with the L-type wrench for easy operation, and easyobservation of the blade unit.

360°
SwivelExhaust360°

Carbide tip

3. Cut the work proceeding in parallel
along the work and in the same
direction as tool rotating direction(clockwise rotation).
4. Follow the same procedures forcurvature processing and inner
circumference processing.

Notch hole

Accessories :Carbide Tip (3), Safety instructions (1)T-Wrench (1), L-Wrench (1)Preparation for Operation
1. Apply the guide roller and cutter
holder tip to the worked area, andcheck the cut points.

Cutter holder

Safety stopper

Rotary twist switch

2. First pre-insert the clamp screw in the cutter holder screw
hole to the 80 to 90 percent extent thereof Attach the tip
tight to the surface from the opposite side. Insert it at
2 points in the positioning notch area. Retaining it withfingers, and swinging left or right with T-type wrench, so
as to proceed to the outside. Finally turn it to the inside,and firmly lock it for fixture.

T-Wrench

3. Similarly, mount 2 pieces of remaining clamp screw withsame procedures.
WorkLock

Guide roller

WARNING :Guide roller

Tool rotating direction

Accessories :Carbide Tip (3), Safety instructions (1)T-Wrench (1), L-Wrench (1)Make sure if the clamp screw head should protrude fromeach tip surface.

ReleaseClamp screw

Cutter holder
Clampscrew

Work

Edge positions

Carbide tip

Turn to the right→ Lock

T-Wrench

Carbide tip

Clamp screwClockwise rotation

Carbide tip

Clamp screw