Posted by Nitro Chain on 10/8/2019 to
Components & Structure Of Roller Chain
Every wonder what a roller chain consists of or how a roller chain is made?
The design of a roller chain is quite simple and consists of only 5 components. The 5 individual components used to make roller chain are the pins, bushings, rollers, inner plates & outer plates. Each component is used to produce sub-assemblies, which are used to create the roller chain product. Below are breakdowns of each chain component that describes the purpose of each chain part. The components and construction is the same for almost every roller chain we offer such as ANSI, metric, conveyor, extended pitch.
Individual Chain Component Breakdown
Outer Link Plate
This is the outermost plate where the pins are pressed into it. The inner & outer link plates take the brunt of a chains shock load. Our link plates undergo a special
hardening process to ensure maximum strength is achieved. Another process the link plates go through is shot peening, which increases the fatigue strength and helps prevent cracking.
Shot peening is a process of shooting little steel balls that compress the surface.
Inner Link Plate
Inner link plates hold the bushing and the roller to form what we call a "roller link". Our inner link plates also go through the same
special hardening & shot peening processes as the outer link plates.
Roller chain pins hold the entire roller chain together and are the "bearing" point of the roller chain. The bearing point is where the chain flexes/pivots when running around a sprocket.
Since the pins are so important, they go through a precision heat treatment process to increase the pins overall strength. This is required to prevent the pins from shearing or bending.
Rollers are the part that rides on the sprocket teeth. The rollers do take a moderate impact especially when the drive is initially started.
The rollers are consistently contacting the sprocket teeth (metal to metal contact), so strength and wear resistance is needed. All Nitro roller chain uses solid rollers to prevent
distortion and they also undergoes special heat treatment with shot peening.
The bushing is located between the pin & roller, which takes impact loads from both sides. Bushings are also heat treated and shot peened for increased strength &
fatigue resistance. Bushings are available in split or solid construction.
Roller Chain Sub Assemblies
The sub-assemblies are made from the individual chain components mentioned above. The sub-assemblies are used to make the roller chain.
Roller Link - Inner Link
Roller links are the inner link of a roller chain that are made using the inner plates, bushings & rollers.
Riveting Link - Pin Link
Riveting Links are made from the pins and outer link plates. These links are used between each roller link to form a roller chain. The pins and outer plates are a pressed to form a solid connection.
Riveting links are available to purchase to replace conventional style connecting links. These riveting links create a stronger
joint over a standard style connecting link.
Assembled Roller Chain
Completed Assembled Roller Chain