Roller Chain Couplings

The roller chain coupling is a flexible coupling of amazingly simple construction. It consists of a combination of one coupling chain and a pair of coupling sprockets. Flexible and strong, the SSPTP roller chain coupling is suitable for a wide range of coupling applications.

Cast Aluminium Covers

For more demanding applications, cast aluminium covers extend life of couplings by providing continuous lubrication and full protection from abrasive elements. The two halves fit around the coupling and connect by ‘Nyloc’ cap-head bolts. Neoprene seals are fitted to seal between sprocket hub and cover. These covers are fitted after coupling is fully installed on shafts.

chain couplin

Compact and Powerful

Torque is apportioned over the whole roller chain and all sprocket teeth, and is held at a point close to the outer diameter of the sprockets. This construction and the superior qualities of U.S. Tsubaki roller chain combine to make a compact and lightweight coupling.

Safe and Smart

The casing, which revolves with the body of the coupling, has an attractive design. And unlike other couplings, there are no dangerous projecting bolts. Connecting and removing the shafts is simply accomplished using a connecting pin.

Easy Alignment

Shafts to be coupled should be aligned as accurately as possible along a straight line. Unfortunately, this proves quite difficult. The chain coupling provides necessary flexibility because the chain and sprocket produce a clearance. In addition to protecting the bearings from overheating and abrasion, it safeguards the machine during use.

Selection of the Size of the couplings

Decide service factor for the unit for which the chain coupling is to be fitted by considering the hours of service, type of power unit etc. from the following table :-
For 8 to 16 hrs/day service use next step service factor. For 16 to 24 hours/day service use service factor two step higher loading.
  • Multiply horsepower of driver unit by the service factor. This is design horsepower.
  • Note the maximum rpm. at which the unit will run and its shaft diameter.
  • From H.P. rating table select the coupling size which is rated equal to or slightly greater than design H.P. required at the rpm. at which the coupling is to operate.
  • Also make sure that the diameter at the shaft is less than the maximum bore permissible on the coupling. If the coupling is not large enough to accommodate the shaft size, use the next coupling which can be bored to suit the shaft requirement.

H. P. Ratings

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Lubrication

Couplings operating without covers under fairly clean conditions will give satisfactory service providing they are periodically (weekly) brushed throughly with ball bearing grease of medium consistency. Couplings operating with covers should be kept filled with a good quality ball bearing grease of soft or medium consistency.
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