40-3 roller chain is an ANSI standard roller chain size, which is a three row chain. Nitro #40 triple roller chain is manufactured from high quality carbon steel for strength and durability. Our 40-3 chain components are shot peened and heat treated for added strength and fatigue resistance. The 40-3 triple roller chain is commonly referred to as "#40 triplex roller chain"
40-3 Roller Chain Dimensions
Inner Width (b1):5/16''
Roller Diameter (d1):0.312''
Overall Width (L):1.787''
Pin Diameter (d2):0.156''
Link Plate Height (h2):0.469''
Link Plate Thickness (T):0.060''
Transverse Pitch (Pt):0.566''
Average Tensile Strength:12,236 lbs
Max Working Load:2,050 lbs
No. Of Pitches/Links Per 10 Feet:240
No. Of Connecting Links Included:1
Chain Material:Carbon/Alloy Steel
Industry Standard:ANSI B29.1
Manufactured with one-piece solid cold forged rollers that offer smoother contact with sprocket teeth and will not distort under heavy loads.
After assembly, all chains are pre-loaded to seat the chain components and eliminates any initial elongation on a new chain.
Pre-lubricated in a special formulated lubricant through a hot-dipping process. This process ensures the lubricant penetrates and evenly coats the entire chain & chain joints. This results in better lubricant retention (less spin-out) that offers better wear resistance and improved service life over cold-dipped chains.
Advanced computer controlled heat treatment is applied to all critical parts to maximize the strength and wear resistance.
Parts are shot peened to add better fatigue resistance and helps prevents cracking from higher loads and wear from operation.
Product Care & Maintenance
Maintenance and lubrication is crucial in the overall performance and life span of roller chain. Proper lubrication will reduce abrasion, chain wear, friction, noise and keep chains running cooler at higher RPM's. You can download the Nitro Roller Chain Care below.