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Rigid Coupling
SRG Series

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  • Why Couplings?
  • Installation Guide
  • Selection Guide
  • Customer-friendly Services
  • Made-To-Order Process
  • Varieties for Special Environments
  • Balancing Correction
  • Engineering Change Notice

SRGP Series

Go to SRG Series(Index)

Ultra High Stiffness Rigid Coupling (Steel Body)

Disk (SCDS) Series youtube SRGP Series – Tech Video Clip
Structure and Material
Structure Material Surface Treatment
Body S45C
(Quenching & Tempering)		 Black Oxide
Cover S45C
(Quenching & Tempering)		 Black Oxide
Screw SCM435 Black Oxide
  • If another surface treatment is required, please ask our customer service team.
Product Features & Application
Backlash free (Precision) ☆
High Torque (Durability) ☆
Torsional Stiffness ☆☆
Vibration Absorption -
Misalignment Absorption -
  • SRG Series is one-piece metal coupling with no backlash and it doesn’t allow any loss of motion while transmitting.
  • Because this series doesn’t absorb misalignment, the allocation of shafts should be set-up in line accurately without any misalignment.
  • Excellent for balancing with the perfect symmetry for the rotating shafts.
  • By processing inner and outer diameter simultaneously, it enables users to install the coupling in a more precise way.
Clamping Methods
Set-screw (No mark) General X
With Keyway X
Side-clamp (C) General X
Hub Split X
With Keyway X
Taper-ring (T) ○
How to Order
HOW TO INSTALL
  • ① Remove dust from the surface and spread oil thinly where inner bore and the inserting shaft face each other. (Any oil type which includes molybdenum-sulfur compounds or silicone is prohibited.)
  • ② Insert the shaft up to the recommended depth of the hub.
  • ③ Place a dial gauge right on the surface which is machined with the inner diameter simultaneously (see figure) and rotate the shaft. Fasten the screws with ⅛ of fastening torque and adjust until the gauge variation(run-out) is zero. It is highly recommended to use a torque wrench in order to fasten them with the same torque.
  • ④ Increase the fastening torque gradually (first ¼ and then ½ of fastening torque) in sequential order as shown on the right-hand figure.
  • ⑤ Fasten the screws with full of fastening torque until the screws are firmly placed. Check the values on the dial gauge(run-out) by rotating the shaft slowly.
  • ⑥Insert the opposite shaft and fasten screws according to the above instruction.