|
|
Machine Tool Shanks & Tapers
|
Kwik-Switch Taper (Universal Engineering)
|
Kwik-Switch was developed by Universal Engineering who manufactured it for many years.
Smith Tool also makes Kwik-Switch tooling. Collis makes fully compatible tooling they call Rapid-Switch.
The Kwik-Switch 200 is about the same size as the NMTB #30 but has more mass and a more positive lock.
|
|
 
Size |
A |
B |
C |
E |
F |
H |
J |
K |
L |
M |
100 |
0.875 |
1.44 |
0.16 |
0.312 |
0.250 |
1.12 |
1.56 |
0.375 |
1.06 |
0.68 |
200 |
1.312 |
2.50 |
0.22 |
0.375 |
0.312 |
1.75 |
2.12 |
0.500 |
1.68 |
0.97 |
300 |
1.625 |
2.94 |
0.28 |
0.438 |
0.375 |
2.00 |
2.50 |
0.500 |
1.94 |
1.22 |
400 |
2.250 |
3.62 |
0.34 |
0.500 |
0.438 |
2.81 |
3.25 |
0.625 |
2.75 |
1.7 |
| |
 
Kwik-Switch Tooling for sale:
|
[Back to Top of page]
CAT, CV or V-flange Taper
|
aka: ANSI B5.50, Caterpillar "V-Flange" standard, ISO 7388-1, IS 11173 (TC), DIN 69871, NFE 62540.
Units built to the international standards (DIN, ISO & NFE) are commonly considered interchangeable with
ANSI (Caterpillar) shanks. However, there are a few differences.
|
|
 
ANSI B5.50 (from Kennametal catalog 7060)
Size |
D1 |
D2 |
D3 |
L |
F1 |
F2 min |
A |
G |
30 |
1.250
(31.75) |
1.812
(46.02) |
1.250
(31.75) |
1.875
(47.63) |
0.750
(19.05) |
1.375
(35.00) |
0.125
(3.18) |
1/2-13
thread |
40 |
1.750
(44.45) |
2.500
(63.05) |
1.750
(44.45) |
2.687
(68.25) |
0.750
(19.05) |
1.375
(35.00) |
0.125
(3.18) |
5/8-11
thread |
45 |
2.250
(57.15) |
3.250
(82.50) |
2.250
(57.15) |
3.250
(82.55) |
0.750
(19.05) |
1.375
(35.00) |
0.125
(3.18) |
3/4-10
thread |
50 |
2.750
(69.85) |
3.875
(98.41) |
2.750
(69.85) |
4.000
(101.60) |
0.750
(19.05) |
1.375
(35.00) |
0.125
(3.18) |
1-8
thread |
60 |
4.250
(107.95) |
5.500
(139.70) |
4.250
(107.95) |
6.375
(161.93) |
0.750
(19.05) |
1.500
(38.10) |
0.125
(3.18) |
1 1/4-7
thread |
ISO 7388-1, DIN 69871, NFE 62540
Size |
D1 |
D2 |
D3 max |
L |
F1 |
F2 min |
A |
G |
30 |
31.75 |
50 |
45 |
47.8 |
15.9 |
35 |
3.2 |
M12 |
40 |
44.45 |
63.55 |
50 |
68.4 |
15.9 |
35 |
3.2 |
M16 |
45 |
57.15 |
82.55 |
63 |
82.7 |
15.9 |
35 |
3.2 |
M20 |
50 |
69.85 |
97.5 |
80 |
101.75 |
15.9 |
35 |
3.2 |
M24 |
[Back to Top of page]
NMTB (Quick Change) Shank
|
ANSI B5.18, National Machine Tool Builders' Association, 1927. DIN 2080 / IS 2340, ISO R 290-2583
Also called Quick Change, NMTB, MM, National Standard, American Standard Machine Taper, etc.
Units built to the ISO standards are commonly considered interchangeable with ANSI units. However,
there are a few differences. (See Erickson Quick-Change Spindle discussion below the tables)
|
|
  
ANSI B5.18 (from Kennametal catalog 7060)
Size |
D1 |
D2 |
D3 |
D4 max |
D5 |
L1 |
L2 |
L3 |
L4 |
L5 |
L6 |
G |
30 |
1.250
[31.75] |
0.655
[16.24] |
0.673
[17.09] |
1.380
[35.05] |
1.812
[46.02] |
2.690
[68.33] |
0.810
[20.57] |
0.125
[3.18] |
0.076
[1.93] |
0.344
[8.74] |
0.359
[9.12] |
1/2-13
thread |
40 |
1.750
[44.45] |
0.935
[23.75] |
0.984
[25.00] |
1.890
[48.0] |
2.500
[63.5] |
3.690
[93.73] |
1.180
[29.97] |
0.188
[4.78] |
0.076
[1.93] |
0.313
[7.95] |
? |
5/8-11
thread |
50 |
2.750
[69.85] |
1.495
[37.97] |
1.545
[39.24] |
2.760
[68.6] |
3.500
[88.9] |
5.000
[127.0] |
1.000
[25.4] |
0.188
[4.78] |
0.141
[3.58] |
0.453
[11.51] |
? |
1-8
thread |
ISO R 297-2583 and DIN 2080
Size |
D1 |
~ |
D3 |
D4 max |
D5 |
L1 |
L2 |
~ |
L4 |
L5 |
L6 min |
G |
30 |
31.75 |
~ |
? |
? |
50 |
68.39 |
? |
~ |
1.62 |
8 |
? |
M12 |
DO40 |
44.45 |
~ |
22.63 |
50 |
63 |
93.40 |
? |
~ |
1.6 |
10 |
11.0 |
M16 |
45 |
57.15 |
~ |
? |
? |
80 |
106.8 |
? |
~ |
3.2 |
12 |
? |
M20 |
DT50 |
69.85 |
~ |
34.25 |
78 |
97.5 |
126.8 |
25 |
~ |
3.2 |
12 |
16.0 |
M24 |
Size |
D6 |
D7 |
L7 |
L8 |
L9 |
DO40 |
24.0 |
21.05 |
7.0 |
4.4 |
7.0 |
DT50 |
38.00 |
~ |
7.0 |
10 |
7.0 |
|
 
|
|
NMTB tool holder compatibility with Erickson Quick-Change Spindles:
The NMTB shank was developed for use in the NMTB spindle which uses a draw bar to pull the shank up into the spindle. As a result, small variations in the tool holder flange thickness and the distance from the gage line of the taper to the outward face of the flange were not an issue when selecting one manufacturer of tool holder versus another.
The Erickson Tool Company developed the Erickson Quick-Change spindle to use the NMTB 30, 40, 45 and 50 tool holders already in existence. The Erickson QC system does not use a draw bar, it uses a quarter turn "locknut" to push and hold the tool holder taper up into the spindle. Two "lips" in the nut push against the outer face of the tool holder flange. The key dimension that causes some NMTB holders to not work in an Erickson Quick-Change spindle is the distance between the taper gage line and the outer face of the flange (dimension L4 + L5 in above tables). L4+L5 on some NMTB holders is too large which does not allow the "lips" in the QC nut to engage the outside face of the flange.
All NMTB holders made by Erickson work fine and I've read that Collis and Valenite holders work fine (at least the ones made in the last 15 years or so). I've also heard that Kennametal NMTB 30 holders work well. The compatibility of other holders is in question. However, all is not lost, the flange face of the holders that do not fit can be turned or ground down a small amount and then they work just fine. Erickson even put out a procedure to do this very thing (does anyone have a copy of the Erickson procedure ?).
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[Back to Top of page]
BT Taper
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Also known as: JMTBA AS-403 "BT", JIS B 6339 - 1986, JIS B6339 - 1992, ISO 7388/1 - 1983
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|
 
Size |
D1 |
D2 |
D3 |
L |
F |
A |
G |
BT30 |
1.250
(31.75) |
1.811
(46.00) |
( ) |
1.906
(48.40) |
0.866
(22.00) |
0.079
(2.00) |
M12
thread |
BT35 |
1.500
(38.10) |
2.087
(53.00) |
( ) |
2.224
(56.50) |
0.945
(24.00) |
0.079
(2.00) |
M12
thread |
BT40 |
1.750
(44.45) |
2.480
(63.00) |
( ) |
2.575
(65.40) |
1.063
(27.00) |
0.079
(2.00) |
M16
thread |
BT45 |
2.250
(57.15) |
3.346
(85.00) |
( ) |
3.260
(82.80) |
1.299
(33.00) |
0.118
(3.00) |
M20
thread |
BT50 |
2.750
(69.85) |
3.937
(100.00) |
( ) |
4.008
(101.80) |
1.496
(38.00) |
0.118
(3.00) |
M24
thread |
[Back to Top of page]
R8 Shank
|
Also refered to as M1TR taper. This shank is held in place by a drawbar.
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|
 
[Back to Top of page]
Morse Taper Shank
|
Generally referred to as MTx (ie MT3 for a #3 Morse Taper).
The taper range is from #0 to #7, and while all have different tapers, they are approximately 5/8" per foot.
With a tang it is the same as DIN 228 Form B.
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|
Size |
D1
Gage Dia. |
D2 |
L2 |
Taper
per ft. |
L1 |
L3 |
H |
Short MT
L2* |
MT0 |
0.3561" |
0.2520" |
2.00" |
0.6246 |
? |
? |
? |
? |
MT1 |
0.4750" |
0.3690" |
2.13" |
0.5986 |
2.44" |
0.38" |
0.20" |
? |
MT2 |
0.7000" |
0.5720" |
2.56" |
0.5994 |
2.94" |
0.44" |
0.25" |
1.4" |
MT3 |
0.9380" |
0.7780" |
3.19" |
0.6024 |
3.69" |
0.63" |
0.31" |
1.8" |
MT4 |
1.2310" |
1.0200" |
4.06" |
0.6233 |
4.63" |
0.63" |
0.47" |
2.1" |
MT4-1/2 |
1.5000" |
1.2660" |
4.5" |
0.6240 |
? |
? |
? |
? |
MT5 |
1.7480" |
1.4750" |
5.19" |
0.6315 |
? |
? |
? |
? |
MT6 |
2.4940" |
2.1160" |
7.25" |
0.6257 |
? |
? |
? |
? |
MT7 |
3.2700" |
2.7500" |
10.0" |
0.6240 |
? |
? |
? |
? |
* Caliper measurement from where I think the gage line is.
|
Short Morse Tapers:
The short Morse Tapers have the same Taper per ft. and Gage diameter (D1) as the standard length units. I don't know the "design" length of the short tapers, but I've included in the above table the quick caliper measurements I made on the few units I have.
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[Back to Top of page]
Jacobs Taper
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Generally referred to as JTx (ie JT3 for a #3 Jacobs Taper).
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|
Size |
Large
End |
Small
End Dia. |
Taper
Lenght |
Taper
per ft. |
JT0 |
0.2500" |
0.2284" |
0.44" |
0.5915 |
JT1 |
0.3840" |
0.3334" |
0.66" |
0.9751 |
JT2 short |
0.5488" |
0.4876" |
0.75" |
0.9786 |
JT2 |
0.5590" |
0.4876" |
0.88" |
0.9786 |
JT33 |
0.6240" |
0.5605" |
1.00" |
0.7619 |
JT6 |
0.6760" |
0.6241" |
1.00" |
0.6229 |
JT3 |
0.8110" |
0.7461" |
1.22" |
0.6390 |
JT4 |
1.1240" |
1.0372" |
1.66" |
0.6289 |
JT5 |
1.4130" |
1.3161" |
1.88" |
0.6201 |
|
 
|
[Back to Top of page]
Jarno Taper
Size |
Large
End |
Small
End Dia. |
Taper
Lenght |
Taper
per ft. |
#2 |
0.2500" |
0.2000" |
1.00" |
0.6000 |
#3 |
0.3750" |
0.3000" |
1.50" |
0.6000 |
#4 |
0.5000" |
0.4000" |
2.00" |
0.6000 |
#5 |
0.6250" |
0.5000" |
2.50" |
0.6000 |
#6 |
0.7500" |
0.6000" |
3.00" |
0.6000 |
#7 |
0.8750" |
0.7000" |
3.50" |
0.6000 |
#8 |
1.0000" |
0.8000" |
4.00" |
0.6000 |
#9 |
1.1250" |
0.9000" |
4.50" |
0.6000 |
#10 |
1.2500" |
1.0000" |
5.00" |
0.6000 |
#11 |
1.3750" |
1.1000" |
5.50" |
0.6000 |
#12 |
1.5000" |
1.2000" |
6.00" |
0.6000 |
#13 |
1.6250" |
1.3000" |
6.50" |
0.6000 |
#14 |
1.7500" |
1.4000" |
7.00" |
0.6000 |
#15 |
1.8750" |
1.5000" |
7.50" |
0.6000 |
#16 |
2.0000" |
1.6000" |
8.00" |
0.6000 |
#17 |
2.1250" |
1.7000" |
8.50" |
0.6000 |
#18 |
2.2500" |
1.8000" |
9.00" |
0.6000 |
#19 |
2.3750" |
1.9000" |
9.50" |
0.6000 |
#20 |
2.5000" |
2.0000" |
10.00" |
0.6000 |
[Back to Top of page]
Brown & Sharpe Taper
Size |
Large
End |
Small
End Dia. |
Taper
Lenght |
Taper
per ft. |
#1 |
0.2392" |
0.2000" |
0.94" |
0.5020 |
#2 |
0.2997" |
0.2500" |
1.19" |
0.5020 |
#3 |
0.3753" |
0.3125" |
1.50" |
0.5020 |
#4 |
0.4207" |
0.3500" |
1.69" |
0.5024 |
#5 |
0.5388" |
0.4500" |
2.13" |
0.5016 |
#6 |
0.5996" |
0.5000" |
2.38" |
0.5033 |
#7 |
0.7201" |
0.6000" |
2.88" |
0.5010 |
#8 |
0.8987" |
0.7500" |
3.56" |
0.5010 |
#9 |
1.0775" |
0.9001" |
4.25" |
0.5009 |
#10 |
1.2597" |
1.0447" |
5.00" |
0.5161 |
#11 |
1.4978" |
1.2500" |
5.94" |
0.5010 |
#12 |
1.7968" |
1.5001" |
7.13" |
0.4997 |
#13 |
2.0731" |
1.7501" |
7.75" |
0.5002 |
#14 |
2.3438" |
2.0000" |
8.25" |
0.5000 |
#15 |
2.6146" |
2.2500" |
8.75" |
0.5000 |
#16 |
2.8854" |
2.5000" |
9.25" |
0.5000 |
#17 |
3.1563" |
2.7500" |
9.75" |
0.5000 |
#18 |
3.4271" |
3.0000" |
10.25" |
0.5000 |
[Back to Top of page]
Automotive Shank
|
Referred to as Auto Shank, Acme shank or Adjustable Adapter.
Acme threaded shanks conform to automotive standard ANSI/ASME B5.11 (1987).
|
|
 
D1
Shank
Size |
D2
Nut
Dia. |
L1
Key
Location |
Woodruff
Key Size |
L2
Nut
Width |
L3
Flat
Length |
L4
Shank
Length |
H
Flat
Depth |
1/2 - 16 |
0.88 |
0.50 |
1/8 x 5/8 |
0.38 |
1.50 |
3.00 |
0.06 |
5/8 - 16 |
1.00 |
0.50 |
5/32 x 5/8 |
0.38 |
1.50 |
3.00 |
0.06 |
3/4 - 12 |
1.25 |
0.50 |
5/32 x 5/8 |
0.38 |
1.50 |
3.00 |
0.06 |
7/8 - 12 |
1.25 |
0.63 |
3/16 x 3/4 |
0.38 |
1.88 |
3.63 |
0.06 |
1 - 12 |
1.50 |
0.63 |
3/16 x 7/8 |
0.38 |
1.88 |
3.63 |
0.06 |
1 1/16 - 12 |
1.56 |
0.63 |
3/16 x 7/8 |
0.38 |
1.88 |
3.63 |
0.06 |
1 1/4 - 12 |
1.75 |
0.69 |
? |
0.38 |
2.63 |
4.63 |
0.06 |
1 3/8 - 12 |
1.88 |
0.69 |
1/4 x 1" |
0.38 |
2.63 |
4.63 |
0.06 |
1 7/8 - 12 |
2.63 |
0.75 |
5/16 x 1-1/4 |
0.50 |
3.00 |
5.63 |
0.06 |
[Back to Top of page]
VDI Shank
 
Size |
D1 |
L1 |
D2 |
D3 |
H2 |
L2 |
L3 |
L32 |
L4 |
L5 |
R1 |
25 |
0.081
(20.6) |
1.9
(48.3) |
0.394
(10.0) |
?
(?) |
0.925
(23.5) |
?
(?) |
?
(?) |
?
(?) |
?
(?) |
?
(?) |
?
(?) |
30 |
1.181
(30.0) |
2.165
(55.0) |
0.551
(14.0) |
2.677
(68.0) |
1.063
(27.0) |
1.169
(29.7) |
1.575
(40.0) |
0.787
(20.0) |
0.079
(2.0) |
0.276
(7.0) |
0.984
(25.0) |
40 |
1.575
(40.0) |
2.480
(63.0) |
0.551
(14.0) |
3.268
(83.0) |
1.417
(36.0) |
1.169
(29.7) |
1.575
(40.0) |
0.787
(20.0) |
0.118
(3.0) |
0.276
(7.0) |
1.260
(32.0) |
50 |
1.969
(50.0) |
3.071
(78.0) |
0.630
(16.0) |
3.858
(98.0) |
1.772
(45.0) |
1.406
(35.7) |
1.890
(48.0) |
0.945
(24.0) |
0.118
(3.0) |
0.315
(8.0) |
1.457
(37.0) |
60 |
2.362
(60.0) |
3.701
(94.0) |
0.630
(16.0) |
4.843
(123.0) |
2.165
(55.0) |
1.720
(43.7) |
2.205
(56.0) |
1.102
(28.0) |
0.157
(4.0) |
0.394
(10.0) |
1.890
(48.0) |
[Back to Top of page]
HSK Shank (hollow taper shank system)
|
I've seen numerous references to standards for the HSK shank including:
ISO 12164, DIN 69893, DIN 29893-1 and DIN 69063-1.
HSK-A is designed for use with Automatic Tool Changers and have tool orientation features on the flange
|
|
 
Size |
Form |
D1 |
D2 |
L1 |
L2 |
L3 |
B1 |
B2 |
B3 |
H1 |
H2 |
32 |
A |
24 |
32 |
36 |
20 |
5 |
7 |
7 |
9 |
13 |
9.5 |
40 |
A |
30 |
40 |
40 |
20 |
6 |
8 |
9 |
11 |
17 |
12 |
50 |
A |
38 |
50 |
51 |
26 |
7.5 |
10.5 |
12 |
14 |
21 |
15.5 |
63 |
A |
48 |
63 |
58 |
26 |
10 |
12.5 |
16 |
18 |
26.5 |
20 |
80 |
A |
60 |
80 |
66 |
26 |
12 |
16 |
18 |
20 |
34 |
25 |
100 |
A |
75 |
100 |
79 |
29 |
15 |
20 |
20 |
22 |
44 |
31.5 |
125 |
A |
95 |
125 |
92 |
29 |
19 |
25 |
25 |
28 |
55.5 |
39.5 |
160 |
A |
120 |
160 |
111 |
31 |
23 |
30 |
32 |
36 |
72 |
50 |
32 |
C |
24 |
32 |
26 |
10 |
5 |
7 |
~ |
~ |
~ |
~ |
40 |
C |
30 |
40 |
30 |
10 |
6 |
8 |
~ |
~ |
~ |
~ |
50 |
C |
38 |
50 |
37.5 |
12.5 |
7.5 |
10.5 |
~ |
~ |
~ |
~ |
63 |
C |
48 |
63 |
44.5 |
12.5 |
10 |
12.5 |
~ |
~ |
~ |
~ |
80 |
C |
60 |
80 |
56 |
16 |
12 |
16 |
~ |
~ |
~ |
~ |
100 |
C |
75 |
100 |
66 |
16 |
15 |
20 |
~ |
~ |
~ |
~ |
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Monarch Shank
Size |
Gage Dia.
D1 |
Driver Gear
D2 |
Flange
D3 |
L1 |
L2 min. |
45 |
2.250 |
2.68 |
1.75 |
2.88 |
1.00 |
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Komet ABS
 
ABS Size |
d
inch (mm) |
d1
inch (mm) |
L
inch (mm) |
ABS 25 |
0.984 (25) |
0.512 (13) |
0.787 (20) |
ABS 32 |
1.260 (32) |
0.630 (16) |
0.906 (23) |
ABS 40 |
1.575 (40) |
0.787 (20) |
1.102 (28) |
ABS 50 |
1.969 (50) |
1.102 (28) |
1.220 (31) |
ABS 63 |
2.480 (63) |
1.339 (34) |
1.496 (38) |
ABS 80 |
3.150 (80) |
1.811 (46) |
1.693 (43) |
ABS 100 |
3.937 (100) |
2.205 (56) |
2.165 (55) |
ABS 125 |
4.921 (125) |
2.756 (70) |
2.756 (70) |
ABS 160 |
6.299 (160) |
3.543 (90) |
3.543 (90) |
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Beaver Quick Change Shank
|
The only information I have on the Beaver Quick Change Shank is taken from units I have in hand.
I have no idea if there is a "standard" that defines the shank or if its a Beaver Tool propritary shank.
The following dimensions are average caliper measurements, so use them accordingly.
|
|
|
 Flange thickness ranged from 0.35" to 0.5"
on the 5 units I measured.
Key-slot depth is approximately 0.2".
The dimples are approximately 0.4" deep,
3/8" dia throat and 0.6" dia. mouth.
|
 
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Weldon Shank
|
Standard Weldon Shank produced by The Weldon Tool Company.
Lots of other manufactures produce shanks with a "Weldon Flat".
|
|
 
S |
U |
V |
W min. |
W max. |
X |
Y |
3/8 |
1-9/16 |
25/32 |
0.280 |
0.282 |
0.050 |
~ |
1/2 |
1-25/32 |
57/64 |
0.330 |
0.332 |
0.060 |
~ |
5/8 |
1-29/32 |
61/64 |
0.400 |
0.402 |
0.065 |
~ |
3/4 |
2-1/32 |
1-1/64 |
0.455 |
0.457 |
0.065 |
~ |
7/8 |
2-1/32 |
1-1/64 |
0.455 |
0.457 |
0.065 |
1/2 |
1 |
2-9/32 |
1-9/64 |
0.515 |
0.517 |
0.075 |
1/2 |
1-1/4 |
2-9/32 |
1-9/64 |
0.515 |
0.517 |
0.094 |
1/2 |
1-1/2 |
2-11/16 |
1-3/16 |
0.515 |
0.517 |
0.094 |
9/16 |
2 |
3-1/4 |
1-27/32 |
0.700 |
0.702 |
0.100 |
27/32 |
2-1/2 |
3-1/2 |
1-15/16 |
0.700 |
0.702 |
0.100 |
27/32 |
Tolerances
Element |
Range |
Direction |
Tolerance |
S |
All Sizes |
Minus |
0.0001 to 0.0005 |
U |
All Sizes |
Plus or Minus |
1/32 |
V |
All Sizes |
Plus or Minus |
1/64 |
X |
All Sizes |
Minus |
1/64 |
Y |
7/8" to 2-1/2" |
Plus or Minus |
1/32 |
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Whistle Notch Shank - DIN6535 form HE
|
The following are sample Whistle Notch shanks that purport to comply with DIN6535 form HE
|
|
 
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Note:
The specifications and information provided on this page are intended for part identification purposes only.
Although we believe them to be correct, dimensions should not be used for part construction or inspection.
The above information was collected from numerous sources, including:
Kennametal "Machining Center Tooling" Catalog.
Briney Tooling Systems
TSD Tooling Systems Division
Milling Machine Tapers by Rick Dulas
Logan Actuator Website
Practical Machinist Forum Discussions
|
|
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