25T10/1880US Timing Belt 3.15/16" 1140K7 is a micro-v belt

1140K7 is a micro-v belt used on serpentine and multi-rib accessory drives — HVAC blowers

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What does the S5M in 150-S5M-1100 mean

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25T10/1880US Timing Belt 3.15/16" 1140K7 is a micro-v belt25T10 1880US Timing Belt The 25T10 1880US is a timing belt from D&D Global's Dura True Torque Urethane Steel T10 Series line. It transmits power positively with no slip, holding timing between shafts on synchronous drives. Specification Value Part Number 25T10 1880US Belt Type Timing Belt Tooth Profile T10US T AT metric Tooth Pitch 10 mm Number of Teeth 188 Belt Width 25 mm Pitch Length 1880 mm (Pitch Length) Construction Polyurethane, Steel Cable