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SJM Key-joint doublerubber disc couplingfor high torques machine
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SJM Key-joint doublerubber disc couplingfor high torques machine

SJM disc coupling is a higer edtion of DJM disc shaft coupling ,DJM diaphragm flexible coupling only have 1 pieces diaphragm, we usually call it single disc coupling .while SJM with double diaphragm ,so we call it double disc coupling .its most time used in pumps.
  • SJM
  • HZCD or customzied
  • 8483600090
  • Foshan China
  • 35CrMo 40Cr,45# steel
  • Standard
  • Compressor, generator, pump, dynamometer, drilling equipment, turbine drive
  • 7working days after confirm the order or according to the quantity.
  • 3 days after confirm the order
  • HZCD or customized
  • Manufacture OEM,ODM offered
  • As customer request or standard
  • forge,CNC turning .milling .drilling grinding ,wire EDM
  • customized

Product Description

SJM type key double elastic diaphragm coupling use excellent stainless steel sheets as elastic materials, with high torsional rigidity, more suitable for fast response of automatic control transmission equipment。


No backlash and hysteresis, high-precision repeated positioning ability.


The low inertia design can exert its excellent durability for forward and reverse operation, braking, etc.


This coupling has a smaller rotational inertia than the expansion sleeve elastic diaphragm coupling.Under the same outer diameter, it is suitable for larger shaft holes transmission equipment, more convenient assembly and disassembly, and lower price.

coupling drawings


coupling parameters

 How about our products and how to processing  it ?

materials & processing

1. How long we can get the feedback after we sent the inquiry for Universal Joint?


We will reply you within 24 hours in working days.



2.What is the leading time for Universal joint?

Based on the quantity and the artwork for your product. Usually 7-10 days for custom single universal joint, and 1-2 working days for stock joint.


3.What is the payment term for Universal Joint?


TT/Paypal/Western Union/ Escrow etc are accepted. Trade Assurance is warmly welcomed.


4.What is the shipping way for Universal Joint?


For small order, we would shipped out by air, large order would shipped by sea. But we would sent them base on your requst.


5.How long of your factory history?


Since 2002


6.Can you mark our logo on the couplings?


Yes,we can mark your Logo.


7.What the package do you use?


We do anti-static package for the couplings.


About the outer pacakage,we make white carton box for reseller customer.


For end-user,we make the carton box with our logo.






9.Can you customize the couplings?


Yes,we can


10.Can you make keyway?


Yes,no problem.

As the disc coupling have verious kinds of type ,so we also can make all of them ,such as single (double )disc coupling with single expansion sleeve ,with taper sleeve ,or the locking disc .

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No.29 south area of LiangBei Industrial Zone, Dali Town, Nanhai District, Foshan City, Guangdong Province, China.
 86-757-88320620
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