SIT-LOCK CAL 7 (EN)

SIT-LOCK CAL 7 (EN)
www.sitspa.com
SIT-LOCK® 7 - Self-Centering with Flange, Short Version
Ø
Ø
The flange design prevents axial movement during installation.
It is suitable for applications with medium torques, and need
very precise axial positioning.
Ø
Locking assembly with single taper design. Provides good
concentricity and self centering.
It is recommended for medium torques and is self-centring.
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
122
Direct Drives
www.sitspa.com
SIT-LOCK® 7
Dimensions [mm]
Performances
Pressure [N/mm2] Clamping screws (DIN 912 - 12,9)
dxD
H
H0
H1
H2
MT
[Nm]
Fax
[kN]
pw
pn
N°
Tipo
Ms
[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
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
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
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
284
313
341
426
478
512
728
796
864
910
1.544
1.655
1.765
1.838
2.311
2.521
3.073
4.670
5.004
5.338
6.380
6.755
7.923
9.714
10.686
13.114
18.943
20.993
24.992
29.324
33.989
35.989
47.485
49.984
28
28
28
34
34
34
45
45
45
45
74
74
74
74
84
84
95
133
133
133
150
150
167
194
194
219
291
300
333
367
400
400
500
500
222
202
185
213
190
177
222
203
187
177
232
217
203
195
203
186
193
211
197
184
195
184
194
198
180
186
175
167
173
179
142
134
159
151
94
94
89
106
97
97
118
118
109
109
130
130
122
122
131
124
132
134
128
123
133
128
137
137
128
135
126
123
130
136
107
103
121
116
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
17
17
17
17
17
17
17
17
17
17
41
41
41
41
41
41
41
83
83
83
83
83
83
145
145
145
145
230
230
230
230
230
230
230
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
123
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