{"asset": "ansi-to-iso-roller-chain-cross-reference", "asset_type": "conversion", "body": "Industrial roller chain is sold under two numbering systems that look interchangeable and are not. The American system numbers chains 40, 50, 60 and so on, in eighths of an inch of pitch. The British/European system numbers them 08B, 10B, 12B. ISO 606 covers both: its A series is the American chain under a metric name (ANSI 40 is ISO 08A -- the same chain), and its B series is the British chain, which shares the pitch but is a different chain, with a different roller diameter and a different inner width, needing its own sprockets. Somebody replacing chain or matching a sprocket across the two systems has to know which of those two relationships they are looking at, and no catalog states it in one place: manufacturers print an ANSI dimensional table and a separate BS/DIN dimensional table in the same document, never cross-referenced, and the pitch match has to be worked out by eye. Each record here is one ANSI chain number with its pitch, roller diameter and inner width; its ISO 606 A-series name where a publisher states one; and the BS/DIN B-series chain that shares its pitch, with that chain's own pitch, roller diameter and inner width printed alongside, so the difference is visible rather than asserted. Answers 'what is the metric equivalent of ANSI 40 chain', 'is BS 08B the same as ANSI 40', 'ANSI 40 vs 08A vs 08B', 'roller chain size conversion chart'. In scope: the ANSI sizes that the source catalog prints with a roller diameter and that have a B-series chain of the same pitch. Out of scope, and why: ANSI 25 and 35, which are rollerless -- the catalog prints a bushing diameter for them, not a roller diameter, so there is no like-for-like comparison to make; ANSI 41, which has no single-line standard dimension row in the source; and ANSI 180, whose 2 1/4 inch pitch has no B-series counterpart in the source.\n", "description": "Industrial roller chain is sold under two numbering systems that look interchangeable and are not. The American system numbers chains 40, 50, 60 and so on, in eighths of an inch of pitch. The British/European system numbers them 08B, 10B, 12B. ISO 606 covers both: its A series is the American chain under a metric name (ANSI 40 is ISO 08A -- the same chain), and its B series is the British chain, which shares the pitch but is a different chain, with a different roller diameter and a different inner width, needing its own sprockets. Somebody replacing chain or matching a sprocket across the two systems has to know which of those two relationships they are looking at, and no catalog states it in one place: manufacturers print an ANSI dimensional table and a separate BS/DIN dimensional table in the same document, never cross-referenced, and the pitch match has to be worked out by eye. Each record here is one ANSI chain number with its pitch, roller diameter and inner width; its ISO 606 A-series name where a publisher states one; and the BS/DIN B-series chain that shares its pitch, with that chain's own pitch, roller diameter and inner width printed alongside, so the difference is visible rather than asserted. Answers 'what is the metric equivalent of ANSI 40 chain', 'is BS 08B the same as ANSI 40', 'ANSI 40 vs 08A vs 08B', 'roller chain size conversion chart'. In scope: the ANSI sizes that the source catalog prints with a roller diameter and that have a B-series chain of the same pitch. Out of scope, and why: ANSI 25 and 35, which are rollerless -- the catalog prints a bushing diameter for them, not a roller diameter, so there is no like-for-like comparison to make; ANSI 41, which has no single-line standard dimension row in the source; and ANSI 180, whose 2 1/4 inch pitch has no B-series counterpart in the source.", "file": "index.md", "generated": true, "harvested": "2026-09-01", "key_field": "ansi_chain_number", "licence": "Manufacturer catalog data; cite source, do not reproduce the whole table -- take the individual dimension facts and the attributed quote, not the document", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "dataset", "verified": false}
{"ansi_chain_number": "100", "ansi_pitch": "1.250", "ansi_roller_diameter": "0.750", "ansi_width_between_roller_link_plates": "0.750", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 100\n\n**ANSI pitch (in):** 1.250\n\n**ANSI roller diameter (in):** 0.750\n\n**ANSI width between roller link plates (in):** 0.750\n\n**ISO 606 A-series number (same chain):** 20A\n\n> 1-1/4 x 3/4 100 20A 31.75 18.9 27.4 19.05 9.53 6.1 30.1 88,500 40.4 76.3 112.2 38.2 74.1 38.2\n\n**BS/DIN B-series chain of the same pitch:** 20B\n\n> RS20BRB 20B 1.250 0.750 0.770\n\n**BS/DIN pitch (in):** 1.250\n\n> RS20BRB 20B 1.250 0.750 0.770\n\n**BS/DIN roller diameter (in):** 0.750\n\n> RS20BRB 20B 1.250 0.750 0.770\n\n**BS/DIN width between roller link plates (in):** 0.770\n\n> RS20BRB 20B 1.250 0.750 0.770\n\n> P R W T H h D 100 1.250 0.750 0.750 0.156 1.185 1.024 0.375\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n\nAlso cited: <https://www.ametric.com/images/document/chains-roller.pdf>\n", "bs_din_chain_number": "20B", "bs_din_pitch": "1.250", "bs_din_roller_diameter": "0.750", "bs_din_width_between_roller_link_plates": "0.770", "file": "100.md", "generated": true, "harvested": "2026-09-01", "id": "100", "iso_a_series_number": "20A", "quote_bs_din_chain_number": "RS20BRB 20B 1.250 0.750 0.770", "quote_bs_din_pitch": "RS20BRB 20B 1.250 0.750 0.770", "quote_bs_din_roller_diameter": "RS20BRB 20B 1.250 0.750 0.770", "quote_bs_din_width_between_roller_link_plates": "RS20BRB 20B 1.250 0.750 0.770", "quote_iso_a_series_number": "1-1/4 x 3/4 100 20A 31.75 18.9 27.4 19.05 9.53 6.1 30.1 88,500 40.4 76.3 112.2 38.2 74.1 38.2", "source_quote": "P R W T H h D 100 1.250 0.750 0.750 0.156 1.185 1.024 0.375", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "100 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "120", "ansi_pitch": "1.500", "ansi_roller_diameter": "0.875", "ansi_width_between_roller_link_plates": "1.000", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 120\n\n**ANSI pitch (in):** 1.500\n\n**ANSI roller diameter (in):** 0.875\n\n**ANSI width between roller link plates (in):** 1.000\n\n**ISO 606 A-series number (same chain):** 24A\n\n> 1-1/2 x 1 120 24A 38.1 25.22 35.3 22.23 11.1 6.6 36.2 127,000 50.3 96.1 141.9 48.2 94 48.2\n\n**BS/DIN B-series chain of the same pitch:** 24B\n\n> RS24BRB 24B 1.500 1.000 1.000\n\n**BS/DIN pitch (in):** 1.500\n\n> RS24BRB 24B 1.500 1.000 1.000\n\n**BS/DIN roller diameter (in):** 1.000\n\n> RS24BRB 24B 1.500 1.000 1.000\n\n**BS/DIN width between roller link plates (in):** 1.000\n\n> RS24BRB 24B 1.500 1.000 1.000\n\n> P R W T H h D 120 1.500 0.875 1.000 0.187 1.425 1.228 0.437\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n\nAlso cited: <https://www.ametric.com/images/document/chains-roller.pdf>\n", "bs_din_chain_number": "24B", "bs_din_pitch": "1.500", "bs_din_roller_diameter": "1.000", "bs_din_width_between_roller_link_plates": "1.000", "file": "120.md", "generated": true, "harvested": "2026-09-01", "id": "120", "iso_a_series_number": "24A", "quote_bs_din_chain_number": "RS24BRB 24B 1.500 1.000 1.000", "quote_bs_din_pitch": "RS24BRB 24B 1.500 1.000 1.000", "quote_bs_din_roller_diameter": "RS24BRB 24B 1.500 1.000 1.000", "quote_bs_din_width_between_roller_link_plates": "RS24BRB 24B 1.500 1.000 1.000", "quote_iso_a_series_number": "1-1/2 x 1 120 24A 38.1 25.22 35.3 22.23 11.1 6.6 36.2 127,000 50.3 96.1 141.9 48.2 94 48.2", "source_quote": "P R W T H h D 120 1.500 0.875 1.000 0.187 1.425 1.228 0.437", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "120 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "140", "ansi_pitch": "1.750", "ansi_roller_diameter": "1.000", "ansi_width_between_roller_link_plates": "1.000", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 140\n\n**ANSI pitch (in):** 1.750\n\n**ANSI roller diameter (in):** 1.000\n\n**ANSI width between roller link plates (in):** 1.000\n\n**BS/DIN B-series chain of the same pitch:** 28B\n\n> RS28BRB 28B 1.750 1.100 1.220\n\n**BS/DIN pitch (in):** 1.750\n\n> RS28BRB 28B 1.750 1.100 1.220\n\n**BS/DIN roller diameter (in):** 1.100\n\n> RS28BRB 28B 1.750 1.100 1.220\n\n**BS/DIN width between roller link plates (in):** 1.220\n\n> RS28BRB 28B 1.750 1.100 1.220\n\n> P R W T H h D 140 1.750 1.000 1.000 0.219 1.661 1.433 0.500\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n", "bs_din_chain_number": "28B", "bs_din_pitch": "1.750", "bs_din_roller_diameter": "1.100", "bs_din_width_between_roller_link_plates": "1.220", "file": "140.md", "generated": true, "harvested": "2026-09-01", "id": "140", "quote_bs_din_chain_number": "RS28BRB 28B 1.750 1.100 1.220", "quote_bs_din_pitch": "RS28BRB 28B 1.750 1.100 1.220", "quote_bs_din_roller_diameter": "RS28BRB 28B 1.750 1.100 1.220", "quote_bs_din_width_between_roller_link_plates": "RS28BRB 28B 1.750 1.100 1.220", "source_quote": "P R W T H h D 140 1.750 1.000 1.000 0.219 1.661 1.433 0.500", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf"], "stale_after": "2028-08-31", "title": "140 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "160", "ansi_pitch": "2.000", "ansi_roller_diameter": "1.125", "ansi_width_between_roller_link_plates": "1.250", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 160\n\n**ANSI pitch (in):** 2.000\n\n**ANSI roller diameter (in):** 1.125\n\n**ANSI width between roller link plates (in):** 1.250\n\n**BS/DIN B-series chain of the same pitch:** 32B\n\n> RS32BRB 32B 2.000 1.150 1.220\n\n**BS/DIN pitch (in):** 2.000\n\n> RS32BRB 32B 2.000 1.150 1.220\n\n**BS/DIN roller diameter (in):** 1.150\n\n> RS32BRB 32B 2.000 1.150 1.220\n\n**BS/DIN width between roller link plates (in):** 1.220\n\n> RS32BRB 32B 2.000 1.150 1.220\n\n> P R W T H h D 160 2.000 1.125 1.250 0.250 1.898 1.638 0.562\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n", "bs_din_chain_number": "32B", "bs_din_pitch": "2.000", "bs_din_roller_diameter": "1.150", "bs_din_width_between_roller_link_plates": "1.220", "file": "160.md", "generated": true, "harvested": "2026-09-01", "id": "160", "quote_bs_din_chain_number": "RS32BRB 32B 2.000 1.150 1.220", "quote_bs_din_pitch": "RS32BRB 32B 2.000 1.150 1.220", "quote_bs_din_roller_diameter": "RS32BRB 32B 2.000 1.150 1.220", "quote_bs_din_width_between_roller_link_plates": "RS32BRB 32B 2.000 1.150 1.220", "source_quote": "P R W T H h D 160 2.000 1.125 1.250 0.250 1.898 1.638 0.562", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf"], "stale_after": "2028-08-31", "title": "160 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "200", "ansi_pitch": "2.500", "ansi_roller_diameter": "1.562", "ansi_width_between_roller_link_plates": "1.500", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 200\n\n**ANSI pitch (in):** 2.500\n\n**ANSI roller diameter (in):** 1.562\n\n**ANSI width between roller link plates (in):** 1.500\n\n**BS/DIN B-series chain of the same pitch:** 40B\n\n> RS40BRB 40B 2.500 1.550 1.500\n\n**BS/DIN pitch (in):** 2.500\n\n> RS40BRB 40B 2.500 1.550 1.500\n\n**BS/DIN roller diameter (in):** 1.550\n\n> RS40BRB 40B 2.500 1.550 1.500\n\n**BS/DIN width between roller link plates (in):** 1.500\n\n> RS40BRB 40B 2.500 1.550 1.500\n\n> P R W T H h D 200 2.500 1.562 1.500 0.312 2.374 2.047 0.781\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n", "bs_din_chain_number": "40B", "bs_din_pitch": "2.500", "bs_din_roller_diameter": "1.550", "bs_din_width_between_roller_link_plates": "1.500", "file": "200.md", "generated": true, "harvested": "2026-09-01", "id": "200", "quote_bs_din_chain_number": "RS40BRB 40B 2.500 1.550 1.500", "quote_bs_din_pitch": "RS40BRB 40B 2.500 1.550 1.500", "quote_bs_din_roller_diameter": "RS40BRB 40B 2.500 1.550 1.500", "quote_bs_din_width_between_roller_link_plates": "RS40BRB 40B 2.500 1.550 1.500", "source_quote": "P R W T H h D 200 2.500 1.562 1.500 0.312 2.374 2.047 0.781", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf"], "stale_after": "2028-08-31", "title": "200 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "240", "ansi_pitch": "3.000", "ansi_roller_diameter": "1.875", "ansi_width_between_roller_link_plates": "1.875", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 240\n\n**ANSI pitch (in):** 3.000\n\n**ANSI roller diameter (in):** 1.875\n\n**ANSI width between roller link plates (in):** 1.875\n\n**BS/DIN B-series chain of the same pitch:** 48B\n\n> RS48BRB 48B 3.000 1.900 1.800\n\n**BS/DIN pitch (in):** 3.000\n\n> RS48BRB 48B 3.000 1.900 1.800\n\n**BS/DIN roller diameter (in):** 1.900\n\n> RS48BRB 48B 3.000 1.900 1.800\n\n**BS/DIN width between roller link plates (in):** 1.800\n\n> RS48BRB 48B 3.000 1.900 1.800\n\n> P R W T H h D 240 3.000 1.875 1.875 0.375 2.850 2.457 0.937\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n", "bs_din_chain_number": "48B", "bs_din_pitch": "3.000", "bs_din_roller_diameter": "1.900", "bs_din_width_between_roller_link_plates": "1.800", "file": "240.md", "generated": true, "harvested": "2026-09-01", "id": "240", "quote_bs_din_chain_number": "RS48BRB 48B 3.000 1.900 1.800", "quote_bs_din_pitch": "RS48BRB 48B 3.000 1.900 1.800", "quote_bs_din_roller_diameter": "RS48BRB 48B 3.000 1.900 1.800", "quote_bs_din_width_between_roller_link_plates": "RS48BRB 48B 3.000 1.900 1.800", "source_quote": "P R W T H h D 240 3.000 1.875 1.875 0.375 2.850 2.457 0.937", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf"], "stale_after": "2028-08-31", "title": "240 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "40", "ansi_pitch": "0.500", "ansi_roller_diameter": "0.312", "ansi_width_between_roller_link_plates": "0.312", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 40\n\n**ANSI pitch (in):** 0.500\n\n**ANSI roller diameter (in):** 0.312\n\n**ANSI width between roller link plates (in):** 0.312\n\n**ISO 606 A-series number (same chain):** 08A\n\n> 1/2 x 5/16 40 08A 12.7 7.85 11.15 7.95 3.96 3.9 12 14,100 17.8 30.1 45.2 14.8 29.9 15.35\n\n**BS/DIN B-series chain of the same pitch:** 08B\n\n> RS08BRB 08B 0.500 0.335 0.305\n\n**BS/DIN pitch (in):** 0.500\n\n> RS08BRB 08B 0.500 0.335 0.305\n\n**BS/DIN roller diameter (in):** 0.335\n\n> RS08BRB 08B 0.500 0.335 0.305\n\n**BS/DIN width between roller link plates (in):** 0.305\n\n> RS08BRB 08B 0.500 0.335 0.305\n\n> P Roll dia. W T H h D 40 0.500 0.312 0.312 0.060 0.472 0.409 0.156\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n\nAlso cited: <https://www.ametric.com/images/document/chains-roller.pdf>\n", "bs_din_chain_number": "08B", "bs_din_pitch": "0.500", "bs_din_roller_diameter": "0.335", "bs_din_width_between_roller_link_plates": "0.305", "file": "40.md", "generated": true, "harvested": "2026-09-01", "id": "40", "iso_a_series_number": "08A", "quote_bs_din_chain_number": "RS08BRB 08B 0.500 0.335 0.305", "quote_bs_din_pitch": "RS08BRB 08B 0.500 0.335 0.305", "quote_bs_din_roller_diameter": "RS08BRB 08B 0.500 0.335 0.305", "quote_bs_din_width_between_roller_link_plates": "RS08BRB 08B 0.500 0.335 0.305", "quote_iso_a_series_number": "1/2 x 5/16 40 08A 12.7 7.85 11.15 7.95 3.96 3.9 12 14,100 17.8 30.1 45.2 14.8 29.9 15.35", "source_quote": "P Roll dia. W T H h D 40 0.500 0.312 0.312 0.060 0.472 0.409 0.156", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "40 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "50", "ansi_pitch": "0.625", "ansi_roller_diameter": "0.400", "ansi_width_between_roller_link_plates": "0.375", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 50\n\n**ANSI pitch (in):** 0.625\n\n**ANSI roller diameter (in):** 0.400\n\n**ANSI width between roller link plates (in):** 0.375\n\n**ISO 606 A-series number (same chain):** 10A\n\n> 5/8 x 3/8 50 10A 15.875 9.4 13.8 10.16 5.08 4.1 15 22,200 20.5 38.7 56.8 19.4 37.5 19.4\n\n**BS/DIN B-series chain of the same pitch:** 10B\n\n> RS10BRB 10B 0.625 0.400 0.380\n\n**BS/DIN pitch (in):** 0.625\n\n> RS10BRB 10B 0.625 0.400 0.380\n\n**BS/DIN roller diameter (in):** 0.400\n\n> RS10BRB 10B 0.625 0.400 0.380\n\n**BS/DIN width between roller link plates (in):** 0.380\n\n> RS10BRB 10B 0.625 0.400 0.380\n\n> P Roll dia. W T H h D 50 0.625 0.400 0.375 0.080 0.591 0.512 0.200\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n\nAlso cited: <https://www.ametric.com/images/document/chains-roller.pdf>\n", "bs_din_chain_number": "10B", "bs_din_pitch": "0.625", "bs_din_roller_diameter": "0.400", "bs_din_width_between_roller_link_plates": "0.380", "file": "50.md", "generated": true, "harvested": "2026-09-01", "id": "50", "iso_a_series_number": "10A", "quote_bs_din_chain_number": "RS10BRB 10B 0.625 0.400 0.380", "quote_bs_din_pitch": "RS10BRB 10B 0.625 0.400 0.380", "quote_bs_din_roller_diameter": "RS10BRB 10B 0.625 0.400 0.380", "quote_bs_din_width_between_roller_link_plates": "RS10BRB 10B 0.625 0.400 0.380", "quote_iso_a_series_number": "5/8 x 3/8 50 10A 15.875 9.4 13.8 10.16 5.08 4.1 15 22,200 20.5 38.7 56.8 19.4 37.5 19.4", "source_quote": "P Roll dia. W T H h D 50 0.625 0.400 0.375 0.080 0.591 0.512 0.200", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "50 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "60", "ansi_pitch": "0.750", "ansi_roller_diameter": "0.469", "ansi_width_between_roller_link_plates": "0.500", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 60\n\n**ANSI pitch (in):** 0.750\n\n**ANSI roller diameter (in):** 0.469\n\n**ANSI width between roller link plates (in):** 0.500\n\n**ISO 606 A-series number (same chain):** 12A\n\n> 3/4 x 1/2 60 12A 19.05 12.57 17.7 11.91 5.94 4.6 18 31,800 25.4 48.3 71.1 24.2 47 24.2\n\n**BS/DIN B-series chain of the same pitch:** 12B\n\n> RS12BRB 12B 0.750 0.475 0.460\n\n**BS/DIN pitch (in):** 0.750\n\n> RS12BRB 12B 0.750 0.475 0.460\n\n**BS/DIN roller diameter (in):** 0.475\n\n> RS12BRB 12B 0.750 0.475 0.460\n\n**BS/DIN width between roller link plates (in):** 0.460\n\n> RS12BRB 12B 0.750 0.475 0.460\n\n> P R W T H h D 60 0.750 0.469 0.500 0.094 0.713 0.614 0.234\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n\nAlso cited: <https://www.ametric.com/images/document/chains-roller.pdf>\n", "bs_din_chain_number": "12B", "bs_din_pitch": "0.750", "bs_din_roller_diameter": "0.475", "bs_din_width_between_roller_link_plates": "0.460", "file": "60.md", "generated": true, "harvested": "2026-09-01", "id": "60", "iso_a_series_number": "12A", "quote_bs_din_chain_number": "RS12BRB 12B 0.750 0.475 0.460", "quote_bs_din_pitch": "RS12BRB 12B 0.750 0.475 0.460", "quote_bs_din_roller_diameter": "RS12BRB 12B 0.750 0.475 0.460", "quote_bs_din_width_between_roller_link_plates": "RS12BRB 12B 0.750 0.475 0.460", "quote_iso_a_series_number": "3/4 x 1/2 60 12A 19.05 12.57 17.7 11.91 5.94 4.6 18 31,800 25.4 48.3 71.1 24.2 47 24.2", "source_quote": "P R W T H h D 60 0.750 0.469 0.500 0.094 0.713 0.614 0.234", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "60 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}
{"ansi_chain_number": "80", "ansi_pitch": "1.000", "ansi_roller_diameter": "0.625", "ansi_width_between_roller_link_plates": "0.625", "asset": "ansi-to-iso-roller-chain-cross-reference", "body": "**ANSI chain number:** 80\n\n**ANSI pitch (in):** 1.000\n\n**ANSI roller diameter (in):** 0.625\n\n**ANSI width between roller link plates (in):** 0.625\n\n**ISO 606 A-series number (same chain):** 16A\n\n> 1 x 5/8 80 16A 25.4 15.75 22.5 15.88 7.92 5.4 24.1 56,700 33.5 61.5 92 30.1 60.6 31.3\n\n**BS/DIN B-series chain of the same pitch:** 16B\n\n> RS16BRB 16B 1.000 0.625 0.670\n\n**BS/DIN pitch (in):** 1.000\n\n> RS16BRB 16B 1.000 0.625 0.670\n\n**BS/DIN roller diameter (in):** 0.625\n\n> RS16BRB 16B 1.000 0.625 0.670\n\n**BS/DIN width between roller link plates (in):** 0.670\n\n> RS16BRB 16B 1.000 0.625 0.670\n\n> P Roll dia. W T H h D 80 1.000 0.625 0.625 0.125 0.949 0.819 0.312\n\nSource: <https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf>\n\nAlso cited: <https://www.ametric.com/images/document/chains-roller.pdf>\n", "bs_din_chain_number": "16B", "bs_din_pitch": "1.000", "bs_din_roller_diameter": "0.625", "bs_din_width_between_roller_link_plates": "0.670", "file": "80.md", "generated": true, "harvested": "2026-09-01", "id": "80", "iso_a_series_number": "16A", "quote_bs_din_chain_number": "RS16BRB 16B 1.000 0.625 0.670", "quote_bs_din_pitch": "RS16BRB 16B 1.000 0.625 0.670", "quote_bs_din_roller_diameter": "RS16BRB 16B 1.000 0.625 0.670", "quote_bs_din_width_between_roller_link_plates": "RS16BRB 16B 1.000 0.625 0.670", "quote_iso_a_series_number": "1 x 5/8 80 16A 25.4 15.75 22.5 15.88 7.92 5.4 24.1 56,700 33.5 61.5 92 30.1 60.6 31.3", "source_quote": "P Roll dia. W T H h D 80 1.000 0.625 0.625 0.125 0.949 0.819 0.312", "sources": ["https://www.ustsubaki.com/wp-content/uploads/tsubaki-roller-chain-catalog-compressed.pdf", "https://www.ametric.com/images/document/chains-roller.pdf"], "stale_after": "2028-08-31", "title": "80 \u2014 ANSI roller chain sizes and their ISO 606 A-series and BS/DIN B-series counterparts", "type": "conversion", "verified": false}