WR78-4 Chain - Welded Steel Mill Chain

Our welded steel WR78-4 chain is manufactured to exceed expectations in working life, strength, and quality. The welded steel style chain is one of the most popular types of Engineer Class Chain on the market. This is widely due to its effectively productive offset link design. With an ultra-high tensile strength of 29,800 lbs at a low per foot weight of 4.0 lbs, WR78-4 chain makes an excellent and efficient use in whichever application it is used in. What makes our WR78-4 chain different is the use of high-grade steel so the core of the components has great metallurgy. Common applications for WR78-4 welded steel chain include heavy-duty conveyors, forestry, grain handling, pulp, paper, and sugar processing. This chain is supplied as 10' coils (30 link strands) and is supplied with one heat-treated connecting pin per coil.
WH78-4 vs WR78-4 Chain
WR78-4 and WH78-4 chain directly interchange with each other dimensionally and are both equally as popular. However, when taking a closer look there are differences. WR78-4 does not implement fully heat-treated components, thus it has a much quicker wear life and a lower tensile strength rating. Because of this we primarily recommend WH78-4 chain and supply it at no additional cost!
WR78-4 strength: 29,800 LBS vs WH78-4 Strength: 34,000 LBS
Made in USA WR78-4 Chains
Something that really sets USA Roller Chain and Sprockets apart from other suppliers in the industry is our lineup of domestically manufactured chains. We supply a Made in USA WR78-4 chain for almost the same price as an import chain, the benefit of domestic welded steel chains boils down to the metallurgy and workmanship/ quality control. Domestic steel has better properties than import and US workers ensure the chain is up to quality standards and is ready for install. Though working loads and tensile strengths are the same with a domestic chain, the metallurgy that domestic materials support will provide an overall better working life in the long-run.

WR78-4 Chain Dimensions

• Part Number: WR78-4
• Tensile Strength: 29,800lbs
• Pitch (A): 4.000"
• Side Bar Height (B): 1.250"
• Side Bar Thickness (C): 0.250"
• Rivet Pin Diameter (D): 0.500"
• Overall Width (E): 3.000"
• Bearing Length (F): 2.000"
• Barrel Diameter (H): 0.880"
• Maximum Sprocket Width (G): 1.000"
• Extreme Durability & High Strength
• Easy Attachment Weld Ability

WR78-4 Chain Sprockets

Additionally, we offer a full line of high-quality sprockets that range in tooth size, bore size, and hub configuration, and is manufactured specifically for WR78-4 chain. We can even supply Made To Order (MTO) and custom sprockets to meet your exact application needs.
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Correct Chain/ Sprocket Travel Direction

WR78-4 Attachments

WR78-4 attachments can be supplied onto the chain in any spacing/ configuration needed.
Non-Standard Attachments:

Pusher Attachment	Flat Bar	HSS Square Tube

Pusher Attachment - These are used in trimmer applications, steel mills, and applications for pushing heavy or large products.
Flat Bar - These attachments are offered as just a standard steel flat plates/ flights or with UHMW or press-fitted steel tube. The UHMW flights act as the wear strip in the bottom of a conveyor.
HSS Square Tube - These are easily replaceable UHMW or steel tube sleeves that reduce wear, maintenance cost, power consumption, and reduce noise.
Non-standard attachments are made per requested dimensions from the customer.

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For pricing and availability on WR78-4 Welded Steel Chain or to get a quote on sprockets or attachments, please contact us.