DUROCHAIN Premium 12B-4 Roller Chain 12B-4 Chain

12B-4 roller chain has a 19.05mm pitch and is manufactured from high-quality carbon steel that meets ISO and British Standards. DUROCHAIN isn't just another dime-a-dozen private label chain like the myriad of other brands that crowd the market. Superior performance and longer wear life allow DUROCHAIN 12B-4 to transcend the competition. Years of boots-on-the-ground research paired with groundbreaking manufacturing techniques combine to equal a proper Premium quality roller chain. DUROCHAIN could be referred to as the pinnacle of roller chain if you will. Our high-performance 12B-4 chain boasts a staggering 11,788 kgs (25,988 lbs) minimum breaking load, along with the ability to transmit energy at peak levels of efficiency! During the development process of DUROCHAIN we noted multiple downfalls of standard 12B-4 roller chain and embarked on a journey to improve upon all the shortcomings we found. We looked at industry standard applications of 12B-4 roller chains and analyzed how each specific application affected the chain's wear life and performance. We then compiled our data and headed to the drawing board to design a superior 12B-4 roller chain that significantly increases productivity by decreasing downtime across multiple applications and industries. Here at DUROCHAIN we don't just talk a big game; we like to put our money where our mouth is! Here's what actually makes our chain so great; DUROCHAIN 12B-4 is proudly manufactured with precision solid bushings, solid rollers, hardened pins, and majestic quad-staked rivets. The sheer beauty of DUROCHAIN 12B-4 is sure to bring a tear to your eye! Each component makes its way through a series of innovative heat treatment and shot-peening processes to unlock each individual component's true potential. The chain is then meticulously assembled and then stretched to 40% of its rated breaking load, which reduces the initial stretching and fatigue of the chain. This ensures that the end user is up and running in no time with peace of mind that they are running a quality chain in their application. This Quad-Strand DUROCHAIN 12B-4 roller chain consists of four strands of 12B-1 roller chain, all connected by our special pins and riveted together by our industry-leading quad-stake riveting process. Our quad-staked rivets will hold on to the chain's side plates harder than a cowboy holds on to a bucking bronco! This dramatically reduces the chances of premature failure caused by the inferior two-stake rivets that have sadly become industry standard. A rivet is arguably the most critical part of a roller chain because if a rivet fails, the chain is almost guaranteed to fall apart! DUROCHAIN 12B-4 roller chain is designed to handle even the most grueling industrial applications! Our cutting-edge manufacturing processes result in a chain that will simply out-last and outperform standard 12B-4 chains, resulting in higher productivity and happy customers! Discover the newest innovations in roller chains when you choose DUROCHAIN 12B-4 roller chain; there's a reason why we put the "DURO" in chain!

12B-4 Chain Dimensions

• Part #: 12B-4
• Pitch (P): 19.05mm
• Roller Width (R): 11.68mm
• Roller Diameter (D): 12.07mm
• Overall Width (W): 81.15mm
• Connecting Link Overall Width (X): 85.75mm
• Plate Height (H): 16.00mm
• Plate Thickness (T): 1.80mm
• Pin Diameter (L): 5.72mm
• Minimum Breaking Load: 11,788 KGS
• Weight: 4.63 kG/ m
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Through-Hardened High-Strength Pins -

One of the most stressed components in a roller chain is the pins. The industry standard for premium chains is a case hardening process that provides a high-strength abrasion-resistant layer on the outer surface of the pin. This technique has been used for many years and does provide excellent strength and wear resistance until the hardness layer is worn. At DUROCHAIN, we use pins hardened to the core, called through hardened pins. This provides ample wear resistance throughout the life of the chain and increases strength.

• Precision Solid Round Parts -

Drastically improving chain wear life and performance of transmitting energy, solid bushings and rollers provide perfectly cylindrical bearing surfaces. Solid round parts require special manufacturing equipment that most factories will not make the initial investment in; however, the improvements in wear life and performance versus a chain with split round parts outweigh these costs in the long run. The issue with a split bushing or a split roller is when a chain experiences shock load or is used for some time, the split components will begin to deform, causing excessive internal wear and friction. All of our standard mild-steel DUROCHAINs use these solid round parts except hollow pin chains. Additionally, our bushings are made from alloy steel hardened to a specific HRC; the rollers are made from SAE steel and hardened to a specific HRC as well. We have found that these specific hardnesses provide the best wear life possible for the material itself.

• Max Countour Sideplates -

Precision made from steel alloy and hardened to an optimal HRC, our unique max contour side plates provide the highest shock load absorption and most extended wear life! The unique design adds additional material to the plate while maintaining the dimensional requirements of the American National Standards Institute (ANSI). DUROCHAIN max contour side plates add strength and wear life to their accompanied chain assembly compared to the standard side plates used by other tier-one chains.

• Quad-Staked Rivets -

DUROCHAINs are equipped with high-hold quad-staked rivets instead of the standard dual-stake rivets used by other manufacturers. This improves the chain's ability to withstand shock loads and side thrust. The superior rivet ensures that the chain is held together with the utmost capacity possible, giving it more versatile capabilities than its predecessors.

• Superior Plate Hole Preparation -

We compared processes to other premium roller chain plate holes to see the most effective and best method for achieving the maximum holding power possible. Most manufacturers use a simple piercing method when creating these plate holes; some use piercing and shaving processes. DUROCHAIN link plate holes are precision pierced, shaved, and ball drifted. Combining all three methods produces link plates capable of superior holding power and maximum pin-to-plate contact.

• Perfectly Factory Pre-Load -

DUROCHAIN is factory pre-loaded to a specific amount that ensures absolute minimal chain stretch. By today's standards, almost all roller chains are pre-loaded to some extent; however, a specific percentage achieves the best balance of reducing stretch and improving wear life. Extensive research was done to ensure DUROCHAIN was factory pre-loaded to this perfect percentage. Additionally, pre-loading ensures all components are perfectly aligned post-manufacturing for optimal performance.