The 40SB OSL is a roller chain coupling for connecting motor shafts to driven equipment in industrial power transmission. Built to accommodate misalignment, dampen vibration and deliver dependable torque transfer. Specifications: - Manufacturer Part Number: 40SB OSL - Product Type: Roller Chain Coupling - Chain Material: Carbon Steel - Pitch: 0.50 in - Chain Size (Number): 40 (1/2") - Number of Strands: 1 - Roller Diameter: 0.313 in - Chain Construction: Riveted - Finish/Coating: Light Oil Preservative - Average Ultimate Strength: 3900 lb - Part Weight: 0.06 lb Stocked and shipped fast from offroadbelts.com. Industrial-grade replacement part for OEM, MRO and maintenance buyers — order with confidence.