Fine threads UNF
7/16 - 20
20
11,079
10,874
10,254
10,247
9,522
ZR26/D-2,5 KD 6,9 - 14,7
744 270 00
S 02
3,94
½ - 20
20
12,667
12,461
11,841
11,732
11,110
ZR26/D-2,5 KD 6,9 - 14,7
744 270 00
S 02
3,85
9/16 - 18
18
14,252
14,031
13,335
13,221
12,520
ZR 26/ D-2,5 KD 6,9 - 14,7 744 270 00
S 02
3,75
5/8 - 18
18
15,839
15,618
14,922
14,803
14,107
ZR 26/ D-2,5 KD 6,9 - 14,7 744 270 00
S 02
3,61
¾ - 16
16
19,012
18,773
17,981
17,854
17,064
ZR 26/ D-1,8 KD 14,8
- 22,3
744 272 00
S 02
3,31
7/8 - 14
14
22,184
21,923
21,006
20,869
19,959
ZR 26/ D-1,8 KD 14,8
- 22,3
744 272 00
S 02
2,91
1 - 12
12
25,354
25,065
23,980
23,830
22,758
ZR 26/ D-1,5 KD 21,8
- 29,2
744 274 00
S 02
2,47
Figure 15: Setting device with setting gauge
Figure 16: Setting device with chaser in chaser holder
7.3. Insertion and setting of the chasers
When inserting the chasers in the chaser holders please
take note that the installation areas on both sides are
clean and in a good condition.
Don’t interfere with the installation areas while thread cut-
ting. It will affect the quality of the threads to be cut and
will render thread cutting impossible.
Since the chaser holders aren’t numbered there is no need
yet to pay attention of their order when inserting them.
After you have inserted them, tight the clamp screw slight-
ly. Thus the chaser is slightly clamped, but can be moved
with the setting screw.
The two needles of the flowmeter are set to zero on the
setting gauge.
Please note to choose the right diameter of the
gauge.
Afterwards the setting gauge will be removed and a
chaser holder will be inserted as shown on the figures 15
and 16.
The chaser has to rest on the stop bolt and the holder
has to be adjusted in heighth so that the index bolt co-
mes to stop
only on the first cutting sprocket
(not on
the guiding presser foot). Now tight the holder with the
clamp screw. The chaser can be set with the setting screw
to the determined value. Afterwards the clamping screws
are tightened. After you have set the whole set of chasers
evenly you can install the chaser holders in the cutting
head.
Should the chasers be shortened after grinding, insert
the
shims
which come with every set of holders between
chaser and setting screw.
needle set
to zero
dial gauge index bolt setting gauge
clamp screw
needle set to
setting value
index bolt
clamp screw
chaser
setting screw
stop bolt
chaser
holder
Operating Manual ZR 26-I
21
Setting of the chasers in the chaser holder