Upgrade to New RexPro™ Engineered Steel Chain for safer, faster and easier field connections
Innovative RexPro™ Engineered Steel Chain is designed to meet bucket elevator performance demands to improve safety and uptime
Next generation RexPro chain allows users to assemble chain safer, faster, and easier by using only an impact driver, while maintaining the industry-leading fatigue and wear life that Rex® chain is known for.
Assembling the chain for installation or reconnecting chain after maintenance with only an impact driver gets the job done faster with fewer workers. At a customer site, assembling replacement chain was done in half the time. This adds up to significantly less exposure to dangerous sometimes dusty work environments.
The new RexPro Engineered Steel Chain builds on the features of the highly dependable standard Rex Chain.
Common features for both standard Rex and RexPro chain:
- Engineered interference fit of the pins and bushings into sidebars increases chain fatigue life
- Through-hardening and shot peening of chain components increases overall chain strength
- Pins, bushings and rollers are manufactured to exact tolerances
- Tightly controlled circumferential induction hardening of pins increases wear resistance, wear life, and toughness
- State-of-the-art deep case carburization of the interior and exterior bushing surfaces increases wear resistance, wear life, and toughness
The combination of these features provides more predictable chain wear – and predictable chain wear means customers will be able to more effectively forecast end-of-chain-life and plan more efficient outages.
Figure 1: Impact driver needed to assemble RexPro 
Figure 2: Pin pusher needed to assemble standard chains Differences between standard Rex and RexPro chain:
The unique RexPro field connection link differs from a standard Rex chain link in that the pins are longer with a threaded end, and the end opposite of the head has a shoulder that ensures the chain will articulate properly when assembled. Special washers and nuts are included, which when driven onto the pins with an impact driver pulls the pins through the cotter side sidebar – resulting in a secure interference fit. When driven to the stop (shoulder of the pin) the threads of the nut deform, locking it in place.
Standard Rex chain ships in approximately 10’ strands (depending on the chain pitch). The first link of the standard Rex chain strand is an open ‘block link’ and the last link is an open ‘attachment link’ which is shipped with a loose connecting pin and keeper.
RexPro chain also ships in approximately 10’ strands (depending on the chain pitch). The first link of the chain strand is still the standard open ‘block link’ but the last link is a new RexPro field connection link (loosely assembled to the chain and shrink wrapped to the chain to be sure no pieces are lost).
The make-up strand (non-standard length) ships similarly, always starting with a block link and ending with either the standard attachment link and pin or the field connection link.
Below is a summary of the similarities and differences between standard Rex chain and the new RexPro chain.
| Standard Rex Chain | New RexPro Chain | |
|---|---|---|
| Engineered interference fit of the pin + bushings into sidebar | ✔ | ✔ |
| Through hardening & shot peening of chain components | ✔ | ✔ |
| Pins, bushings + rollers manufactured to exact tolerances | ✔ | ✔ |
| Circumferentially induction hardened pins | ✔ | ✔ |
| State-of-the-art deep case carburization of the bushing inside and outside diameter | ✔ | ✔ |
| Standard strand length 10ft (depending on pitch) | ✔ | ✔ |
| First link is open block link | ✔ | ✔ |
| Final link is open attachment link | ✔ | |
| Final link is RexPro field connection link | ✔ | |
| Impact driver assembly | ✔ | |
| Connection link design ensures no over-tightening | ✔ | |
| Less time and people required for assembly | ✔ |
Have specific questions about RexPro? Talk to our expert engineers or request a quote here.
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Fred Lueneburg
Fred Lueneburg, a US Navy Submarine Veteran has been involved with power generation, marine propulsion and heavy machinery since 1986 in various technical roles including operations, mechanical maintenance and control systems as well as field services. Fred joined Regal Rexnord in 2011 as the Industrial Chain and Conveying Systems Field Services Manager, Sr. Manager of the Industrial Chain and Conveying Systems Team from quotation through delivery and field services, Business Development Manager for the Rexnord Bulk Materials Handling team, Product Manager for Industrial Chain and currently as the Industrial Chain Business Development Manager supporting our sales team with site training, product training, opportunity development, quote expedite, order price negotiation and order expedite as needed.