--- 9 ---
4
(Nail head supporting portion)
(Nail head supporting portion)
Nose
Firing gate
Firing gate
Nose
0.6
Head of nail
Head of nail
8. MECHANISM AND OPERATION PRINCIPLE
8-1. Mechanism
As illustrated in Fig. 4, the Model NR 83AA2 can be generally divided into four sections:
output section, control valve section, driving section and magazine section.
The driving section (nose and piston) and the magazine section have been newly designed though its basic
construction is the same as that of the Model NR 83AA (valve section is common to the Model NR 83AA).
Primary differences from the Model NR 83AA are described below.
Whole body ......................... No washer is used for reduction of parts count.
(The washer of the exhaust cover mounting screw is integrated with the screw.)
Output section ................... The piston (driver blade) has been newly designed to correspond to the nose
shape. Owing to the enlargement of the driver blade, the driver blade hole in the
piston bumper is also enlarged.
The body handle is wound with a band-type grip rubber instead of the racket-grip
tape. (Conventional grip tape is supplied as a repair part because the grip
rubber cannot be mounted to the body handle by hand.)
The other parts are common to the Model NR 93AA.
Driving section .................... All the parts have been newly designed.
The nail head supporting portion of the nose is widened as shown in Fig. 3
(same construction as Paslode F-350s) to cope with the problem that some of
the commercially available nails are apt to clog due to the nail supporting portion
is narrow and is apt to wear. Two spring supporters are provided to mount the
depth adjustment pushing lever kit (optional accessory).
Magazine section ................ All the parts have been newly designed.
The magazine section is simpler than the Model NR 83AA for reduction of parts
count.
The magazine is changed from top loading type to rear loading type (same
construction as SENCO FP650).
The magazine can be easily mounted by inserting the magazine into the nose
and securing the handle arm to the body with a screw.
NR 83AA
NR 83AA2
Fig. 3