Martin 40BS15 7/8 Roller Chain Sprocket, Bore 20mm 15-Teeth

High‑quality steel roller chain sprocket designed for ANSI #40 chain systems. Features 15 teeth, a 20 mm bored‑to‑size hub, and a protective coating for durable performance in power‑transmission, conveyor, and mechanical drive applications. Technical specifications: Model: 40BS15 7/8 Manufacturer: Martin Sprocket & Gear Country of manufacture: USA Number of teeth: 15 Chain number & pitch: 40 / 1/2 in Chain / sprocket type: Standard roller chain Pitch type: Single Pitch diameter: 2.4049 in Caliper diameter: 2.0797 in Outside diameter: 2.6520 in Bore diameter: 0.8750 in (7/8") Bore type: Bored to size Keyway size: 3/16 × 3/32 in Tooth width: 0.284 in Hub diameter: 1‑13/16 in Length through bore: 0.8750 in Number of hubs: 1 Number of strands across: 1 Material: Steel Surface treatment: Protective coating Hardened teeth: Non‑hardened teeth Storage dimension height: 15/16 in Storage dimension length: 2.8750 in Storage dimension width: 2.8750 in Weight: 0.55 lbs Manufacturer UPC: 697950004099 "