Cutter holder

Carbide tip

Turn to the right→ Lock

T-WrenchClamp screw

Clampscrew

Carbide tip

INSTRUCTION MANUAL FOR AIR BEVELER(Safety lever)360°

Clamp screw

Carbide tip

Tip Replacement Period

Cutter markIf 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.

Accessories
Carbide tip (3)OptionT-typeallen wrench (1)693-99Adjustmenttool (1)Guide roller (1)For ≧ 8mm thickness

Guide roller

For ≧ 6mm thickness

3mmAllen wrench (1)99
3‑69(Rotary twist switch)

360°Parts No.693-5

Optional carbide tips for SI-4021L, SI-4021
The original carbide tip can be cutting smooth. And
it is available octahedral. So it is very economical.

C3 Carbide Tip for radiusing the edges

The tip can be used ４ times on the top, and ４times on the bottom. If an angle changed,it can be
８ times.

333C
Cooling Air Mechanism

SAFETY WARNING :Guide Roller

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.

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.Firmly
and securely mount it onto the cutter holder.

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.

http://www.shinanoinc.co.jp
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.

Height Adjustment Method for chamfering

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

1. Adjust a height of cutter holder by loosening 2 screwsof tool body side fully and turn base plate around. After
adjustment,fasten a screw firmly.

OIL

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〉

Max.rpm:10,000rpm
360°
SwivelExhaust❶Air inlet

2. Height between base plate and guide roller can beadjusted using the supplied adjustment tool as shownin figure to get a rough indication of chamfering surface
at work material. To be exact, confirm its chamfering
surface.

※Chamfering surface can be confirmed at the opposite
side of adjustment tool.

360°

693‑99〈Safety lever〉

HeightBase plate

Safety leverPush※Figure is case of C3

ON

2High speed

OFF

Safety stopperPreparation for Operation
1. Apply the guide roller and cutter
holder tip to the worked area, andcheck the cut points.

Set upCarbide tip

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

WARNING :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.

WorkCutting

Guide roller

Work

Clockwise rotation

Chamfering
surfaceWork material

Tip Replacement Procedures
Tip Removal Method
1. Lay the tool reversely so that the cutter holder unit
can be exposed.

Adjustment tool

2. The tip is fixed by a clamp screw.
Isert the T-type wrench through the notch hole ofthe base plate in the tip clamp screw head.
3. Retain the tip with fingers from the reverse side
so as not to drop. Swinging it left or right, rotate it
counterclockwise, and release the lock for removal.
4. Remove 2 pieces of remaining clamp screw in thesame procedures.

Max.rpm:10,000rpm

Tool rotating direction

Work

Accessories :Carbide Tip (3), Safety instructions (1)T-Wrench (1), L-Wrench (1)Adjustment tool (1) Parts No.693-99

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.

※In case of insufficient loosening,breakage of
inner screws will be in danger.

693‑99

Guide roller

3 4 5
6 799‑396

360°
SwivelExhaustRotary twist switch

Notch hole

Carbide tip Mount Method360°

1. If accustomed to running, it is not required to remove theguide roller. However, it is first required to remove it with theL-type wrench for easy operation, and easy observation of
the blade unit.
2. First pre-insert the clamp screw in the cutter holder screw
hole to the 80 to 90 percent extent thereof Attach the tip tightto the surface from the opposite side. Insert it at 2 points
in the positioning notch area. Retaining it with fingers, andswinging left or right with T-type wrench, so as to proceed tothe outside. Finally turn it to the inside, and firmly lock it forfixture.

❶Air inlet

Accessories :Carbide Tip (3), Safety instructions (1)T-Wrench (1), L-Wrench (1)Adjustment tool (1) Parts No.693-99
693‑99Adjustment tool

Cutter holder

Edge positions

T-Wrench

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

WARNING :Make sure if the clamp screw head should protrude fromeach tip surface.

LockRelease
Clamp screw

Guide roller