Shaft Coupling

Coupling is a core component that transmits power and motion
from the driving shaft to the driven part while absorbing misalignment
and any possible factors that could reduce efficiency of machines
(e.g. vibration, noise, electric current, etc.)

SRGP Series Go to SRG Series(Index)

Ultra High Stiffness Rigid Coupling (Steel Body)

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

Taper-ring

Dimensions / Performance
Model CAD Size (±0.3mm) Screw Max. rpm
(min-1)		 Moment of
Inertia
(kg·m2) 		Mass
(g)		 ID Range Rated
Torque
(N·m)
D L L1 B Size Fastening
Torque
(N·m)
SRGP-48T 48 44 20 4 M6 14 15,000 0.16×10-3 460 16~22 90~140
SRGP-54T 54 52 24 4 M6 14 13,000 0.29×10-3 680 18~25 80~190
SRGP-64T 64 52 24 4 M6 14 12,000 0.56×10-3 860 22~35 150~460
SRGP-78T 78 55 25.5 4 M6 14 9,500 1.23×10-3 1,190 30~48 180~490
  • The Moment of Inertia and Mass values are based on products with max. Inner diameter.
  • The permissible torque is determined by its inner diameter size. Please refer to the bottom of the page for more details.
  • Due to the structure of Taper-ring, it’s not allowed to have other complementary options (e.g. keyway etc.) to enhance clamping force.
Standard Inner Diameter (ID)
Model Standard Inner Diameter (d1, d2) (mm)
16 18 19 20 22 24 25 25.4 28 30 32 35 40 42 45 48
SRGP-48T ● ● ● ● ●
SRGP-54T ● ● ● ● ● ●
SRGP-64T ● ● ● ● ● ● ● ●
SRGP-78T ● ● ● ● ● ● ●
  • 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.
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.
  • 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 different kind of fastening screw is used. Therefore, we recommend you test under the same conditions before mounting.
  • The permissible torque of a complete SRGP coupling should be considered according to the smaller inner diameter’s value.
Model Slip Torque (N.m) by Inner Diameter (d1, d2)
16 18 19 20 22 24 25 25.4 28 30 32 35 40 42 45 48
SRGP-48T 90 110 120 130 140
SRGP-54T 80 100 110 145 180 190
SRGP-64T 150 200 220 220 290 340 390 460
SRGP-78T 180 220 240 360 390 440 490