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How To Measure Roller Chain

How To Measure Roller Chain

Issue Time:2022/03/11
How To Measure Roller Chain
When measuring a roller chain it is highly recommended to use a pair of calipers to ensure that your measurements are highly accurate. We are a medium sized family owned and operated company focused on bringing our customers expert customer service at competitive prices. Our roller chain inventory consists of ANSI, ISO, DIN, and MTO specialty roller chains. We manufscture  carbon steel, nickel plated, stainless steel, coated, zinc, and plastic roller chains.
Roller chain pitch 
The plate thickness is the measurement "P" in the drawing above.This is the measurement from the center of one pin to the center of the next and is the measurement "P" in the drawing above.
Side Plate Height
The plate thickness is the measurement "h2" in the drawing above.You can measure either the inside plate height or outside plate height, both measurements should match. If your roller chain has inside and outside plates that differ in height this could be an indication of a non-standard roller chain.
Side Plate Thickness
The plate thickness is the measurement "T" in the drawing above. It is typically best to measure the inside and outside plate thickness because some ISO and DIN metric roller chains feature inside and outside plates that have different thicknesses. The thickness of a side plate will also tell us if you have a heavy duty series roller chain.
Roller Diameter
The roller diameter is the measurement "d1" in the drawing above. Please note that some chains that are classed as a roller chain do not have rollers, such as ANSI sizes #25, #35, #45, #65, #85, #105 as well as other bushed roller-less chains.
Roller Width
The roller width is the measurement "b1" in the drawing above. If you have a roller-less chain just measure the inside width of the inner side plates.
Overall Chain Width
The overall width of the roller chain is the measurement "L" in the drawing above. Please make sure that you are not measuring the overall width of the master link and or offset link when you are taking this measurement.
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