The Stanley 370-2278 Chain and Cable Assembly is an OEM replacement drive component for select Stanley chain-drive door operators. Designed to transmit motion from the motor sprocket to the trolley along the rail, this assembly helps restore consistent opening and closing performance when the original chain/cable becomes stretched, frayed, or damaged. It is commonly used as a direct-fit replacement in compatible Stanley operator platforms where a chain-and-cable drive is specified, making it a practical repair part for maintaining dependable door travel and linkage integrity.
Confirm compatibility by referencing your operator’s model-specific parts diagram for part number 370-2278. Installation generally requires disconnecting power, disengaging the door from the opener, removing the worn assembly, routing the new chain/cable over the sprocket and rail, setting the correct tension, and rechecking travel limits and safety functions in accordance with the manufacturer’s service instructions. For safety, ensure the door is properly balanced, verify all entrapment protection devices after service, and follow torque and adjustment procedures specified for the particular Stanley platform. This OEM chain and cable assembly is intended as a like-for-like replacement to support reliable operation in applicable chain-drive door operators.