Roller Chain and Transmission Chain

By: Renold New Zealand  06-Dec-2011
Keywords: Operating Conditions, Roller Chain, Conveyor Chain

Still without doubt manufacturing the World's finest specification roller chain, Renold provides chain solutions for hundreds of applications coping with operating conditions that are hot or cold, wet or dry, dusty or requiring cleanliness and all of these solutions combine excellent wear resistance and fatigue resistance with a long, reliable working life.  Working with Renold gives you access to a Total Care Package for all your chain requirements.

Products include:

  • Synergy 
  • A&S Chain
  • Small and large pitch (4mm up to 4 inch) chain
  • Attachment Chain
  • Syno - maintenance free chain
  • Stainless steel chain
  • Hydro-Service – superior corrosion resistance chain
  • Sovereign – abrasion resistance chain 
  • Hollow bearing pin chain
  • Nickel-plated chain
  • Zinc plated chain
  • Extended pitch chain  
  • Sidebow chain
  • Cranked link chain
  • Bush chain
  • Polymer block chain     
  • Oilfield chain

The Renold precision steel roller chain is a highly efficient and versatile means of transmitting mechanical power, which, in the field of industrial applications, has almost completely superseded all other types of chain previously used.

The illustration below shows component parts of the outer link and of the inner link of a Renold simple roller chain.

Renold Chain Exploded Diagram

As illustrated, the Renold precision steel roller chain consists of a series of journal bearings held in precise relationship to each other by the constraining link plates. Each bearing consists of a bearing pin and bush on which the chain roller revolves.

The bearing pin and bush are case hardened to allow articulation under high pressures, and to contend with the load carrying pressures and gearing action imparted via the chain rollers. All chains are classified according to pitch (the distance between the centres of adjacent bearing pins), roller diameter and width between inner plates. Collectively, these dimensions are know as the gearing dimensions, as they determine the form and width of the sprocket teeth.

Both BS and ANSI ranges of chain are available in double pitch and bush chain forms. Double pitch is primarily another form of conveyor chain using the round parts from a standard transmission chain, but having twice the pitch.

Bush chain is simply roller chain without a roller and is also the only design configuration possible on very small pitch chain, such as 4mm and ANSI 25 or 1/4 inch pitch. Bush chain is used for lightly loaded applications or those requiring only direct pull.

Modern chain has features incorporated which enable demanding applications to be tackled with ease. These include high wear and fatigue resistance and transmission efficiency of around 98%.

Chain is also now manufactured in multiple strands joined together by a common pin, giving more scope for increased power transmission in restricted space. The range of products now available with alternative materials, special coatings, endless varieties of attachments, hollow bearing pins and anti-backbend, to name just a few, give scope for the widest portfolio of design solutions imaginable.

Together with improvements to factory applied greases and better understanding of applicational techniques, designers can now specify transmission chain with confidence.

To find out more about Renold chain, including technical specifications and designs, please contact your Renold Sales Office.

Keywords: Attachment Chain, Conveyor Chain, Operating Conditions, Roller Chain,

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