SIT-LOCK CAL 6 (EN)

SIT-LOCK CAL 6 (EN)
www.sitspa.com
SIT-LOCK® 6 - Self-Centering without Flange Short Version
Locking assembly with single taper design. Provides good
concentricity and is self centering. A small axial movement of
the hub during the installation operation may occurr.
Applications requiring accurate axial positioning are not
recommended with this type of locking assembly.
SITLOCK® 6 is suitable for applications with medium torques.
Installation
Carefully clean contact surfaces of shaft and hub. Then, lightly oil
both surfaces with standard mineral oil. Position the SIT-LOCK®
on the shaft and into the hub machined bore. Align them as
required by the application. Gradually and uniformly tighten the
locking screws to the tightening torque (Ms).
You must tighten the screws in diametrically opposite sequence in
stages:
• hand tighten the screws until the surfaces are in contact
• carefully check the position of the hub on the shaft
• tighten the screws to half the value of the tightening torque
(Ms) stated in the catalogue
• repeat the operation until the tightening torque is reached using
the dynamometric screw-driver
• check every locking screw to insure it has been tightened to
the specific tightening torque
Do not use lubricant like “Molykote” or molybdenum disulfide
based oils.
Removal
Gradually loosen all locking screws. Remove and transfer the
screws into the releasing tapped holes and tighten them until the
SIT-LOCK® is released.
Note: To reuse the locking element, carefully oil the screws and
the conical surfaces, then follow installation instructions.
Concentricity
For self-centering locking assemblies, the clamping element has a centering effect and the concentricity error can be considered
0.02-0.04 mm.
Maximum allowable roughness
Rt 16 µm
Maximum recommended tolerance
shaft h 8 - hub H 8
120
Direct Drives
www.sitspa.com
SIT-LOCK® 6
Dimensions [mm]
Performances
dxD
H
H0
H1
H2
MT
[Nm]
20 x 47
22 x 47
24 x 50
25 x 50
28 x 55
30 x 55
32 x 60
35 x 60
38 x 65
40 x 65
42 x 75
45 x 75
48 x 80
50 x 80
55 x 85
60 x 90
65 x 95
70 x 110
75 x 115
80 x 120
85 x 125
90 x 130
95 x 135
100 x 145
110 x 155
120 x 165
130 x 180
140 x 190
150 x 200
160 x 210
170 x 225
180 x 235
190 x 250
200 x 260
17
17
17
17
17
17
17
17
17
17
20
20
20
20
20
20
20
24
24
24
24
24
24
26
26
26
34
34
34
34
44
44
44
44
28
28
28
28
28
28
28
28
28
28
34
34
34
34
34
34
34
40
40
40
40
40
40
44
44
44
54
54
54
54
64
64
64
64
22
22
22
22
22
22
22
22
22
22
26
26
26
26
26
26
26
30
30
30
30
30
30
32
32
32
40
40
40
40
50
50
50
50
34
34
34
34
34
34
34
34
34
34
42
42
42
42
42
42
42
50
50
50
50
50
50
56
56
56
66
68
68
68
78
78
78
78
380
419
457
571
639
685
974
1.065
1.157
1.218
2.060
2.207
2.354
2.452
3.082
3.363
4.098
6.240
6.685
7.131
8.524
9.025
10.585
13.045
14.349
17.610
25.437
28.155
33.518
39.327
45.584
48.265
63.683
67.035
Pressure [N/mm2]
Clamping screws (DIN 912 - 12,9)
Fax
[kN]
pw
pn
N°
Type
Ms
[Nm]
38
38
38
46
46
46
61
61
61
61
98
98
98
98
112
112
126
178
178
178
201
201
223
261
261
294
391
402
447
492
536
536
670
670
297
270
247
285
254
237
297
271
250
237
310
289
271
260
270
248
257
281
263
246
261
246
259
266
242
250
235
224
232
240
190
180
213
202
126
126
119
142
130
130
158
158
146
146
173
173
163
163
175
165
176
179
171
164
177
171
182
184
172
181
170
165
174
183
144
138
162
155
5
5
5
6
6
6
8
8
8
8
7
7
7
7
8
8
9
8
8
8
9
9
10
8
8
9
12
9
10
11
12
12
15
15
M6
M6
M6
M6
M6
M6
M6
M6
M6
M6
M8
M8
M8
M8
M8
M8
M8
M10
M10
M10
M10
M10
M10
M12
M12
M12
M12
M14
M14
M14
M14
M14
M14
M14
14
14
14
14
14
14
14
14
14
14
35
35
35
35
35
35
35
70
70
70
70
70
70
125
125
125
125
190
190
190
190
190
190
190
Notes:
Dimensions representing the total length of the hub are indicative; they are calculated according to the geometric rules.
SIT-LOCK®
For assemblies requiring larger dimensions, contact our Technical Department.
MS
Screw tightening torque
Nm
MT
Transmissible torque moment
Nm
Fax
Transmissible axial load
N
pw
Shaft pressure
pn
Hub pressure
N/mm2
N/mm2
Direct Drives
121
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