Heavy Series Chain

Where to BuyContact Us

Produced to ANSI specification, Drives® Heavy Series chains are offered in two main styles: HR Series and HZ Series. Both lead the industry in manufacturing processes and are critical to performance in demanding markets. This being said, it is important to know how they differ so you can choose the correct series for your application.

  • HR Series: Contains a case-hardened pin and heavy link plates for increased fatigue strength and wear life in high speed or abrasive applications.
  • HZ Series: Contains a through-hardened pin and heavy link plates for high load or pulsating applications.

We also offer a Z Series chain with through-hardened pins and standard link plates for select applications.

Features & Benefits

  • Materials

    Starting with the best materials leads to higher strength and better wear life. Our manufacturing process begins with raw materials that meet exacting standards for metal grade, mechanical properties, carbon and alloy content to ensure minimization of impurities that impact tensile and fatigue strength.

  • Fabrication

    Drives designs each component to exacting dimensional standards for optimal performance. Precision ground pins, solid rollers and bushings work in concert with linkplates to maximize the bearing area, improving fatigue life and working loads as a result. Drives® Heavy Series chain comes in two main styles, HR and HZ Series. Both feature heavier sidebars but their main difference is pin type. HR has case-hardened pins, while HZ has through-hardened pins.

  • Heat Treatment

    Strict control of atmosphere, time and temperature optimize the material properties – increasing strength, durability and wear resistance.

  • Shot Peening

    We shot peen our roller and link plates for greater fatigue strength. This adds a layer of compressive stress that helps components resist failure when exposed to repeated high loads. In addition, we press steel balls through the pitch holes in a process called ballizing – effectively optimizing bearing contact between pins, bushings and linkplates to increase chain fatigue resistance and pin retention.

  • Lubrication

    We use a proprietary lubrication process on all lubricated chains for enhanced corrosion protection and extended wear life.

  • Preloading

    Following assembly, all chains are preloaded to firmly seat the pins and bushings. This is to reduce initial run-in and extend the wear life of the chain.



Concrete & Aggregate

Food & Beverage

Forestry & Paper

General Industry

Material Transport

Metal Processing


Oil & Gas


Sugar Mill

Choosing the Chain for Your Application

Use our Chain Configurator or Chain Engineer Mobile Web App for assistance selecting the right chain for your application. If you have a challenging demand beyond the scope of a standard Drives® chain, we would be excited to partner with you to provide custom-manufactured solutions to meet your specific needs.

Chain Configurator

Build and download a custom chain within a full 3D window with this state-of-the-art web app.

Chain Engineer

Explore our suite of mobile-friendly tools to help in the maintenance and selection of chain driven applications.