{"product_id":"tsubaki-d140b21f-double-roller-chain-sprocket","title":"Tsubaki D140B21F Double Roller Chain Sprocket","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"634\"\u003eThe Tsubaki D140B21F Double Roller Chain Sprocket is used in heavy-duty industrial power transmission systems to drive ANSI No. 140-2 double-strand roller chains for high-torque applications. Commonly installed in mining equipment, bulk material handling systems, heavy-duty conveyors, cement plants, steel mills, and aggregate processing machinery requiring robust chain drive performance. Maintenance teams and system integrators use this sprocket for repair, retrofit, expansion, or replacement to restore precise chain engagement and dependable mechanical power transmission. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"636\" data-end=\"653\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"654\" data-end=\"1211\"\u003eThe Tsubaki D140B21F double roller chain sprocket is engineered for demanding industrial chain drive applications where high load capacity and extended service life are essential. Its double-strand configuration, 21-tooth design, and finished 3-3\/4 inch keyed bore provide reliable torque transmission for heavy conveyors, crushers, processing equipment, and other industrial machinery operating under continuous-duty conditions. Hardened teeth improve wear resistance and extend sprocket life in abrasive environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1213\" data-end=\"1242\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1243\" data-end=\"2153\"\u003e• Manufacturer: Tsubaki Emerson Co.\u003cbr data-start=\"1278\" data-end=\"1281\"\u003e• Model \/ Part Number: D140B21F\u003cbr data-start=\"1312\" data-end=\"1315\"\u003e• Product Type: Double Roller Chain Sprocket\u003cbr data-start=\"1359\" data-end=\"1362\"\u003e• Series: Type B Finished Bore Sprocket\u003cbr data-start=\"1401\" data-end=\"1404\"\u003e• Compatible Chain Size: ANSI No. 140-2 Double Strand Roller Chain\u003cbr data-start=\"1470\" data-end=\"1473\"\u003e• Number of Teeth: 21\u003cbr data-start=\"1494\" data-end=\"1497\"\u003e• Number of Strands: Double\u003cbr data-start=\"1524\" data-end=\"1527\"\u003e• Chain Pitch: 1-3\/4 in (44.45 mm)\u003cbr data-start=\"1561\" data-end=\"1564\" data-is-only-node=\"\"\u003e• Bore Size: 3-3\/4 in Finished Bore\u003cbr data-start=\"1599\" data-end=\"1602\"\u003e• Keyway Size: 7\/8 in\u003cbr data-start=\"1623\" data-end=\"1626\"\u003e• Length Through Bore: 3.75 in\u003cbr data-start=\"1656\" data-end=\"1659\"\u003e• Material: Carbon Steel\u003cbr data-start=\"1683\" data-end=\"1686\"\u003e• Finish: Black Oxide\u003cbr data-start=\"1707\" data-end=\"1710\"\u003e• Tooth Hardening: Hardened Teeth\u003cbr data-start=\"1743\" data-end=\"1746\"\u003e• Outside Diameter: 12.660 in\u003cbr data-start=\"1775\" data-end=\"1778\"\u003e• Pitch Diameter: 11.743 in\u003cbr data-start=\"1805\" data-end=\"1808\"\u003e• Hub Diameter: 7.000 in\u003cbr data-start=\"1832\" data-end=\"1835\"\u003e• Mounting: Shaft mounted with keyed bore\u003cbr data-start=\"1876\" data-end=\"1879\"\u003e• Function: Drives ANSI No. 140-2 double-strand roller chain for heavy-duty power transmission\u003cbr data-start=\"1973\" data-end=\"1976\"\u003e• Application: Heavy-duty conveyors, mining equipment, aggregate processing, steel mills, cement plants, and bulk material handling systems \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2155\" data-end=\"2179\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2180\" data-end=\"2326\"\u003e• Tsubaki D140B20F Double Roller Chain Sprocket\u003cbr data-start=\"2227\" data-end=\"2230\"\u003e• Tsubaki D140B22F Double Roller Chain Sprocket\u003cbr data-start=\"2277\" data-end=\"2280\"\u003e• Tsubaki D140A21 Double Roller Chain Sprocket\u003c\/p\u003e","brand":"Tsubaki","offers":[{"title":"New","offer_id":51714231468334,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_2206e8ed-5f0f-4397-b5c9-a50d9512d3d9.jpg?v=1770419989","url":"https:\/\/plgautomation.com\/products\/tsubaki-d140b21f-double-roller-chain-sprocket","provider":"PLG Automation ","version":"1.0","type":"link"}