−
88
−
(9) Protruding amount of the hook shaft
1. Protruding amount of hook shaft
1
from the end plane of hook shaft front metal
2
is 9 mm.
(Caution) When the protruding amount is excessively large or small, lubrication failure will occur.
So, be careful.
1
2
9mm
(10) Adjusting the feed stepping motor unit (A-SR only)
Feed stepping motor link is treated as the selective part to improve the quality of the feed mechanism.
When replacing the part, be careful of the selection of selective parts.
1. For feed stepping motor connecting shaft
1
,
there are four kinds which are different in outer
diameter tolerance of shaft, A to D. Select the shaft
which is of less looseness to the hole of feed
stepping motor link A asm.
2
2. There are grease grooves in the both ends of
bushing of feed stepping motor link A asm
2
. and
a grease filling hole inside feed stepping motor
connecting shaft
1
. Fill those parts with exclusive
grease (can type part No. 23640204 or tube type
part No. 40006323).
3. Connect feed stepping motor link B
3
and feed
stepping motor link A asm.
2
after making the
looseness in the shaft direction as small as
possible. Assemble feed stepping motor link A
asm.
2
so that it can move by its weight.
4. Do not adjust the position of origin sensor
installing plate setscrew
4
and feed stepping
motor link B
3
.
1
2
3
4
Name of part
Feed stepping motor
connecting shaft A
Feed stepping motor
connecting shaft B
Feed stepping motor
connecting shaft C
Feed stepping motor
connecting shaft D
Remarks
There
are
engraved
marks at
the edge
sections.
Part No.
23544109
23544208
23544307
23544802
Outer diameter
tolerance
Maximum
Large
Medium
Small