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Rigid Coupling
SRG Series

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  • Made-To-Order Process
  • Varieties for Special Environments
  • Balancing Correction
  • Engineering Change Notice

SRG Series

Go to SRG Series(Index)

Rigid Coupling

  • SRG – 2D (.dwg)
  • SRG – 3D (.step)

Side-clamp

Dimensions / Performance
SRG-C
Model CAD Size (±0.3mm) Screw Rated
Torque
(N·m)
Max.
rpm
(min-1)
Moment
of
Inertia
(kg·m2)
Mass
(g)
Side-
clamp
Hub
Split
(W)
D L L1 F1 Size Fastening
Torque
(N·m)
SRG-16C 16 16 7 3.7 M2.6 1 1 18,000 2.5×10-7 6.8
SRG-20C 20 20 9 4.6 M2.6 1 2.5 15,000 7.5×10-7 12
SRG-25C 25 25 11.5 5.8 M3 1.7 4 12,000 2.3×10-6 24
SRG-32C 32 32 15 7.6 M4 3.5 9 10,000 8.0×10-6 52
SRG-43C 43 41 19.5 10 M5 8 20 8,000 3.3×10-5 114
SRG-53C 53 51 24.5 12.5 M6 13 25 6,000 9.2×10-5 234
  • The Moment of Inertia and Mass values are based on products with max. Inner diameter.
  • Max. torque/rated torque is the value regarding to a coupling’s self-durability and is not related to slip-torque between the coupling bore and the shaft.
SRGL-C
Model CAD Size (±0.3mm) Screw Rated
Torque
(N·m)
Max.
rpm
(min-1)
Moment
of
Inertia
(kg·m2)
Mass
(g)
Side-
clamp
Hub
Split
(W)
D L L1 F1 F2 Size Fastening
Torque
(N·m)
SRGL-16C 16 22.5 10.3 3 5.4 M2.6 1 1 16,000 3.4×10-7 9.3
SRGL-20C 20 24 11 3.1 5.6 M2.6 1 2.5 14,000 8.6×10-7 14
SRGL-25C 25 35 16.5 4.7 7.6 M3 1.7 4 10,000 3.2×10-6 34
SRGL-32C 32 40 19 5.3 9.1 M4 3.5 9 9,000 9.8×10-6 63
SRGL-43C 43 52 25 7 11.5 M5 8 20 7,000 4.1×10-5 141
SRGL-53C 53 66 32 9 14.5 M6 13 25 5,500 1.3×10-4 297
  • The Moment of Inertia and Mass values are based on products with max. Inner diameter.
  • Max. torque/rated torque is the value regarding to a coupling’s self-durability and is not related to slip-torque between the coupling bore and the shaft.
  • To ensure even tightening, tighten the screws to the recommended torque for the initial tightening, and then repeat the process 2-3 times, alternating with each screw.
Standard Inner Diameter (ID)
Model Standard Inner Diameter (d1, d2) (mm)
3 4 5 6 8 10 11 12 14 15 16 18 20 22 24
SRG□-16C
SRG□-20C
SRG□-25C
SRG□-32C
SRG□-43C
SRG□-53C
  • The recommended shaft tolerance is h7.
  • Custom process (e.g. non-standard Inner diameter, special tolerance etc.) is also available upon a special request in prior to order placement.
  • Keyway is available. (Optional)
Slip Torque
  • The below table shows the actual permissible torque values when the slip torque value is lower than the coupling’s max. torque value.
  • If the slip torque value is lower than the coupling’s max. torque value, please check and compare between the slip torque in the below table and the operating torque value of the connected motor. It is safer to size up the coupling or use a key/keyway when the slip torque value is lower than the motor’s operating torque.
  • The below slip torque values may be subject to change according to different testing conditions. (e.g. shaft tolerance, surface roughness, surface treatment or acceleration/deceleration of driving shafts). On the other hand, the values could be affected when a different kind of fastening screw is used (body material or surface treatment). Therefore, we recommend you test under the same conditions before mounting.
Model Max.
Torque
(N·m)
Slip Torque (N·m) by Inner Diameter (d1, d2)
3 4 5 6 8 10 11 12 14
SRG□-16C 1 1
SRG□-20C 2.5 1.7 2 2.4
SRG□-25C 4 2.6 3.2
SRG□-32C 9 4.5 7
SRG□-43C 20 8 8 8.5 14
SRG□-53C 25 20
Various options for Side-clamp Hub Split available
SRG-C 1-side hub split
SRG-32CW-10W-14
ID 10mm : Hub Split (W)
ID 14mm : Not Split
SRG-C Both-sides hub split
SRG-32CW-10W-14W
ID 10mm : Hub Split (W)
ID 14mm : Hub Split (W)
SRGL-C 1-side hub split
SRGL-32CW-10W-14
ID 10mm : Hub Split (W)
ID 14mm : Not Split
SRGL-C Both-sides hub split
SRGL-32CW-10W-14W
ID 10mm : Hub Split (W)
ID 14mm : Hub Split (W)