Sapphire 25-1R Roller Chain NSMP

Sapphire 25-1R Roller Chain NSMP is a 1/4-inch pitch, single‑strand ANSI B29.1 standard roller chain from the Sapphire line, designed for robust power transmission in industrial machinery. Each link uses a solid cold‑forged roller for smooth sprocket engagement and resistance to distortion under load, with nominal dimensions of pitch 0.25 inches, inner width 0.125 inches, roller diameter 0.130 inches, overall width 0.311 inches, pin diameter 0.091 inches, link plate height 0.228 inches, and plate thickness 0.030 inches. The chain is produced from carbon steel (with options for nickel plating or stainless steel in Sapphire’s line) and is commonly sold in standard lengths such as 10 ft, 50 ft, and 100 ft reels. Typical performance figures include an average tensile strength around 992 lbs and a maximum working load near 143 lbs per link, with a N1 chain generation designation and pre‑loaded joints to minimize initial elongation; many versions are pre‑lubricated via a hot oil bath to improve joint penetration. Sapphire’s Standard Series is positioned for general industrial use—from food processing to forestry—where reliable wear, fatigue resistance, and consistent manufacturing quality are important for drives and conveyors.