SK3
Torque Limiter with conical clamp connection for direct drives

5 - 2,800 Nm

SK3 TORQUE LIMITER WITH CONICAL CLAMP CONNECTION FOR DIRECT DRIVES

Specifications SK3

SK3 series 15 30 60 150 200 300 500 800 1500 2500
Adjustment range available
from - to (approx. values) (Nm)
TKN
5-10
8-20
10-25
20-40
10-30
25-80
20-70
45-150
80-200
30-90
60-160
140-280
100-200
150-240
220-400
80-200
200-350
300-500
400-650
500-800
600-900
650-850
700-1200
1000-1800
1500-2000
2000-2500
2300-2800
Adjustment range available from - to (approx. values), full disengagement (Nm) TKN 7-15 8-20
16-30
20-40
30-60
20-60
40-80
80-150
80-140
130-200
120-180
160-300
60-150
100-300
250-500
200-400
450-800
1000-1250
1250-1500
1400-2200
1800-2700
Overall length ±2 (mm) A
6269
7280
8494
93105
99111
114128
123136
151 175 246
Overall length, full disengagement ±2(mm) AF
6269
7280
8494
93105
102114
117131
127140
151 184 252
Actuation ring Ø (mm) B 55 65 73 92 99 120 135 152 174 243
Actuation ring Ø, full disengagement (mm) BF 62 70 83 98 117 132 155 177 187 258
Fit length (mm) C 19 22 27 32 32 41 41 49 61 80
Inner diameter
from Ø to Ø H7 (mm)
D1 /
D2
10-22 12-23 12-29 15-37 20-44 25-56 25-60 30-60 35-70 50-100
Inner diameter
from Ø to Ø H7 (inch)
D1 /
D2
0,437"-
0,750"
0,500"-
0,875"
0,500"-
1,125"
0,625"-
1,375"
0,875"-
1,625"
1,000"-
2,125"
1,000"-
2,250"
1,250"-
2,250"
1,500"-
2,750"
2,000"-
3,875"
Outer diameter of coupling (mm) E 49 55 66 81 90 110 123 133 157 200
Distance (mm) F 13 16 18 19 19 23 25 31 30 34
Distance,
(full disengagement) (mm)
FF
13 14 17 18 17 20 22 20 26 31
6x Screw ISO 4017 I M4 M5 M5 M6 M6 M8 M8 M10 M12 M16
Tightening torque (Nm) I 4 6 8 12 14 18 25 40 70 120
Approx. weight (kg)0.3 0.4 1.2 2.3 3.0 5.0 6.5 9.0 16.3 35
Moment of interia
(10-3 kgm2)
Jges
0.100.15
0.280.30
0.750.80
1.902.00
2.803.00
5.56.0
11.012.8
20 42 257
Torsional stiffness
(103 Nm/rad)
CT
2015
3928
7655
175110
191140
420350
510500
780 1304 3400
Lateral misalignment max. (mm)
0.150.20
0.200.25
0.200.25
0.200.25
0.250.30
0.250.30
0.300.35
0.35 0.35 0.35
Angular misalignment max. (degrees)
11.5
11.5
11.5
11.5
1.52
1.52
22.5
2.5 2.5 2.5
Lateral spring stiffness (N/mm)
475137
900270
1200380
1550435
2040610
37501050
2500840
2000 3600 6070
Actuation path (mm)1.5 1.5 1.7 1.9 2.2 2.2 2.2 2.2 3 3
CAD Portal 15 30 60 150 200 300 500 800 1500 2500
2D/3D Data 

Properties

  • Design: With tapered conical clamp and removal jack screws
  • Temperature range: -30° C to +100° C (-22° F to +212° F)
  • Backlash: Absolutely backlash free through frictional clamping connection
  • Service life: Maintenance free when operated within the technical specifications.
  • Tolerance: Tolerance between hub and shaft 0.01 – 0.05 mm.
  • Material:
    • bellows made of highly elastic stainless steel
    • torque limiter section: High strength hardened steel
    • hub material: Steel
  • Properties of Torque Limiter model SK3:
    • actuation ring moves to trigger external sensor
    • absolutely backlash-free and torsionally rigid
    • adjustable settings
    • low residual friction after disengagement
    • low moment of interia
    • disengagement within 1 - 3 msecs