REDWIRE The Tsubaki engineering chain and its basic structure and elements

March 10, 2021 REDWIRE is news you can use from leading suppliers. Powered by FRASERS.

Posted by Tsubaki Of Canada Ltd.


Since 1973, the Canadian market has trusted Tsubaki of Canada Limited, a division of Japan’s Tsubakimoto Chain Co.... Read more

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engineering chain

The components that go into engineering chains

Tsubaki of Canada offers a broad portfolio of chains, such as engineering chains – ideal for sanitary environments, extreme temperatures, freezers, or exposure to corrosion chemicals, the outdoors, or excessive moisture. Each engineering chain by Tsubaki is specially constructed and tested by the company to outlast other chains while making applications cost-effective. Every one is made of three fundamental dimensions – pitch, roller diameter, and inside link width – and is compatible with the sprockets when these dimensions are equal.

Two types of construction

There are two types of construction for engineering chains: press fit and slip fit. Press fit is more common, putting the pins and sidebars together with a tight forced fit to keep pins and bushing rotating about fixed points and boost fatigue life. The slip-fit design of these chains have a loose fit between pins and sidebars, making assembly easier.

The following parts make up each Tsubaki engineering chain:

  • Attachment sidebar – sometimes designed to accommodate attachments of slats, aprons, fixtures, and more.
  • Bushing – a strength-bearing component that receives tension forces during sprocket engagement. Its main purpose is to be a bearing component. The outer diameter is subject to wear from sliding against the rollerʼs inner diameter during roller rotation, while the inner diameter is vulnerable to wear from sliding against the pinʼs outer diameter while the chain articulates.
  • Pin – connects the inside link to the outside one and transmits tension in the engineering chain along the direction of travel, while receiving vertical reaction forces from the conveyed items. An essential strength-bearing component that requires high wear resistance.
  • Roller – forms a slip fit with the bushing, as its rotation reduces sprocket tooth wear while engaging with the sprocket. Roller rotation alleviates the shock and wear from the teeth and lowers chain-pull resistance.
  • Sidebar – receives the tensile load along the travel direction and vertical reactive forces when supporting items.
  • T-head cotter – inserted and bent to ensure the pin stays completely engaged with the sidebar, after the outer plate is press-fit to the pin.

To learn more, contact Tsubaki.


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Posted by Tsubaki Of Canada Ltd.


Since 1973, the Canadian market has trusted Tsubaki of Canada Limited, a division of Japan’s Tsubakimoto Chain Co.... Read more

Contact supplier