About Roller Chain and Sprockets
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ANSI Roller Chain and Links for Flat-Belt Pulleys



Also known as leaf chain and counterbalance chain, this chain is used with pulleys rather than sprockets for low-speed pulling and as counterweight chain for machine tools, elevator and oven doors, and forklift masts. Made of interlaced plates held together by rivet pins, it has a higher tensile strength than roller chain and is used with flat pulleys instead of sprockets.
When servicing worn leaf chain, replace the entire chain—do not splice chains together or mix old and new chain.
Clevis connecting links attach your chain to a clevis.
ISO 4347 chain meets an international standard for leaf chain.
For technical drawings and 3-D models, click on a part number.
Chain | Clevis Connecting Links | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Roller Chain Trade No. | Pitch | Pin Dia. | Overall Wd. | Lacing | Breaking Point, lbs. | Specifications Met | Lengths, ft. | Per Ft. | Each | ||
Single Strand | |||||||||||
Steel | |||||||||||
BL434 | 1/2" | 0.200" | 43/64" | 3 × 4 | 7,500 | ASME B29.8M | 3-7, 10, 20 | 000000 | 000000 | 0000000 | 00000 |
BL534 | 5/8" | 0.234" | 25/32" | 3 × 4 | 11,000 | ASME B29.8M | 3-7, 10, 20 | 000000 | 00000 | 0000000 | 0000 |
BL634 | 3/4" | 0.312" | 1 1/32" | 3 × 4 | 17,000 | ASME B29.8M | 3-7, 10, 20 | 000000 | 00000 | 0000000 | 0000 |
BL646 | 3/4" | 0.312" | 1 27/64" | 4 × 6 | 22,000 | ASME B29.8M | 10, 20 | 000000 | 00000 | 0000000 | 0000 |
BL834 | 1" | 0.375" | 1 9/32" | 3 × 4 | 28,500 | ASME B29.8M, ISO 4347 | 10, 20 | 0000000 | 00000 | 000000 | 00 |