#40 Roller Chain Offset Link – Half Link
#40 Roller Chain Offset Link – Half Link
This #40 offset link, commonly called a half link, lets you assemble a #40 roller chain with an odd number of pitches. It is used when the required chain length cannot be made with standard links alone and the door operator or hoist permits an offset link.
PRODUCT DETAILS
• Part type: Roller chain offset link
• Chain size: #40
• Common name: Half link
• Purpose: One-pitch chain length adjustment
COMPATIBILITY
Confirm that the existing drive chain is #40 before ordering. #40 and #41 chains have the same 1/2-inch pitch but different widths, so matching the pitch alone is insufficient. Check the equipment instructions to confirm that an offset link is suitable for the drive.
INSTALLATION & SAFETY
Disconnect power and secure the door before servicing the chain. Install and secure the link according to the equipment instructions. Check the connection, sprocket alignment, and chain tension, then reinstall guards before operating the door.
An offset link may reduce the chain assembly’s load capacity. Follow the equipment manufacturer’s requirements, particularly for heavy loads, impact, or frequent starts and stops.
Details
Need Help With Compatibility?
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