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.)

SOH Series

Oldham Coupling

SOH Series Classification
  • SOH series transmits motion through the middle spacer and is particularly excellent for absorption of parallel misalignment.
  • It has a simple structure for easier self-maintenance.
  • It enables reaction force on the shaft to be reduced by moving the spacer even though there is parallel misalignment.
  • Sung-il Machinery provides various spacer types which are allowed to be used in special circumstances.
Spacer Material Polyacetal (POM) PEEK VESPEL
Model SOH(No mark) SOH-C SOHM-C(Spacer-saving) SOHMP-C SOHSV-C
Shape Shape of SOH(No mark) Shape of SOH-C Shape of SOHM-C(Spacer-saving) Shape of SOHMP-C Shape of SOHSV-C
Hub Material High Strength Aluminum Alloy Stainless Steel
Clamping methods Set-screw Side-clamp
OD range Ø5.9-Ø73 Ø16-Ø118 Ø12-Ø73 Ø20-Ø32 Ø20-Ø32
ID range Ø1-Ø35 Ø3-Ø60 Ø3-Ø35 Ø4-Ø15 Ø4-Ø15
Application General Purposes Vacuum Vacuum & High-temperature
For more info View more > View more > View more >
Center-Through Spacer Option is available
  • If the shaft has to be inserted deeper than L1 value, we can provide appropriate center-through sleeves.
  • Please indicate additional mark (TH) next to the part no. Please refer to “HOW TO ORDER” for more details.
  • Due to the structural characteristics of the center-through (TH) type spacer, slight variations in static torsional stiffness values may occur.
  • Center-Through (TH) is standard for the following models, SOH-6,8,10,12, SOHM-12C, SOH□-70□, 90C, 120C and all sizes of SOHMP,SOHSV series.
  • The standard color of spacer for SOH-6, 8, 10, 12 is white, but the material is the identical Polyacetal(POM).
Model Max. standard ID Spacer-TH ID
SOH-16 Ø6 Ø7
SOH-20 Ø8 Ø10
SOH-25 Ø10 Ø14
SOH-32 Ø15 Ø16
SOH-43 Ø19 Ø21
SOH-53 Ø25 Ø24
SOH-57 Ø28 Ø26
SOH-70 Ø40 Ø35
SOH-90 Ø50 Ø40
SOH-120 Ø60 Ø50