FLOATING TAPPER CHUCK
Suitable Tapper Chuck for Conventional M/C More convenient in tapping, thanks to stable torque and slim body Good Run-out, No Pull-out and No Tap Breakage with NIKKEN Tapper Chuck
Ideal for Unmanned System With the axial floating system
Tap Collet
L
ZKN ZKG
Tap
φ D
φ C 1
φ C
Z
Float
F 1
F 2
− Compression
Tension +
Tapping Capability
Float
Weight (kg)
Tap Collet
TAPER
Code No.
D L C C 1
M
U
P
F
F 2
1
1/8 ～ 1/4 1/8 ～ 1/2 1/8 ～ 1/4 1/8 ～ 1/2 1/8 ～ 5/8 1/2 ～ 1 3/4 ～ 1 3/8 1/8 ～ 1/4
M 2 ～ 8̶ M 2 ～ 12 M 2 ～ 8 M 2 ～ 12 M 3 ～ 16 M 8 ～ 24 M18 ～ 38 M 2 ～ 8
＊ 1
BT30-Z 8- 90 ＊ 1 -Z12-105 BT40-Z 8- 90 ＊ 1 -Z12- 90 -Z12-130 -Z16-109 -Z24-100 -Z24-187 -Z38-140 BT50-Z 8-105 ＊ 1 (IT40)
ZKN 8 ZKG12 ZKN 8
13 90 23 33 33 45 45 19 105 32 13 90 90 23
5 15 5 15
1.2 1.2 1.4 1.5 1.6 2.0 2.1 3.5 6.7 4.2 4.3 4.8 5.0 5.2 5.8 6.2 8.3 9.0
No.30
P1/16 ～ 1/4
＊ 1
5 5
15
P1/16 ～ 1/4 P1/8 ～ 3/8 P1/4 ～ 5/8
ZKG12
19 25
32 39
15
15 8 10 20
130 109 100 187
No.40
ZKG16
55 68 63 85 33
20 20
30
ZKG24
46
P3/8 ～ 1
ZKN 8 ZKN38
45 140 78
8 22 5 15
＊ 1
13
105 130 175 220 135 142 187 175 160
23
(IT50)
-Z12-130 -Z12-175 -Z12-220 -Z16-135 -Z24-142 -Z24-187 -Z38-175 -Z65-160
M 2 ～ 12
1/8 ～ 1/2
P1/16 ～ 1/4
ZKG12
15 15
19
45
32
No.50
M 3 ～ 16 M 8 ～ 24 M18 ～ 38 M36 ～ 100
1/2 ～ 1 1/8 ～ 5/8
P1/4 ～ 5/8 P3/8 ～ 1 P1/8 ～ 3/8
ZKN65 ZKN38 ZKG16 ZKG24
8 20 20 20
55 63
39 46
25 30 45 68
3/4 ～ 1 3/8 1 ～ 3 3/4 P1 ～ 3
78 110 ＊ 2 (125)
25 25̶̶
98 110
10 10
★ In Case of IT40, IT40-Z8-95 * 1 and IT40-Z24-125 are standard. ★ Marked ＊ 1 Z8 Tapper Chuck and ZK8 Tap Collet are available as semi-standard. ★ Please refer P.293 (ZKG) ～ P.66 (ZK) for ISO, IMPERIAL, DIN Tap Collet, ★ Marked ＊ 2 ( ) dimension is for M65 or more size of ZK Tap Collet.
★ In Case of IT50, IT50-Z8-105 * 1 , IT50-Z38-187 and IT50-Z65-165 are standard.
P.291 (ZKG) ～ P.292 (ZKN) for JIS Tap Collet , and
P.295 for Long Size Tap Collet.
Caution for Floating Mechanism
1
(1). Too Much Tension When tension movement exceeds the limitation, the black mark will appear. In this case increase machine feed. (2). Too Much Compression When machine feed is too fast for the tap thread pitch, the compression floating mechanism will work. The machine program should be modified to slow feed rate down.
BLACK MARK
TOO MUCH TENSION
TOO MUCH COMPRESSION
2
When the drilled hole diameter is too small (this is often caused by the drilling of the tough materials, extended drilling diameter is not large enough.), the tap will slip before the breakage due to torque limitter mechanism. In this case enlarge the drilled hole and do not adjust the torque setting. For a blind hole tapping, the tap might hit the bottom of the hole and the floating shaft will not extend any further, if the Z point is too close to the component. And the point of reversing the floating shaft could compress further than the extension, it may cause damage to the tapped hole. In this case, make the drilled hole deeper or restrict Z point at the higher position. When the R point is too close to the component, the spindle will moves upwards with the fully extended float mechanism at reversing operation, and it might cause damage to the tapped hole as the tap may be still in the hole when the spindle try to return to the initial point at the rapid feed. In this case, give further distance between the R point and the component. In case of the tapping with Z type tapper chuck, since the Z Axis stroke will move upwards after reversing operation starts at the Z point due to the machine tapping cycle features, it may cause damage to the tapped hole. In this case, input the dwell command at the Z point on the program in order to make the upward movement of Z Axis with the tapper chuck as its extended float mechanism.
3
4
5
52
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