{"product_id":"thomson-a81420-ball-bushing-for-anti-friction-linear-motion","title":"Thomson A81420 Ball Bushing For Anti-Friction Linear Motion","description":"\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:757438bb-d8fe-4968-8293-1050c853f2c6-10\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:757438bb-d8fe-4968-8293-1050c853f2c6-10\" data-turn-id-container=\"request-WEB:757438bb-d8fe-4968-8293-1050c853f2c6-10\" data-testid=\"conversation-turn-22\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"4f2ba522-8afb-443b-b8ae-651fa71dfee6\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"667\"\u003eThe Thomson A81420 Precision Ball Bushing Bearing is used in anti-friction linear motion systems to provide smooth, accurate, and low-drag linear travel on 1\/2-inch Class S hardened shafting. Commonly installed in CNC machine tools, automated assembly equipment, packaging machinery, robotic positioning systems, semiconductor equipment, and material handling systems where precise linear movement is essential. Maintenance teams, OEM machine builders, and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this linear bearing for machine repairs, bearing replacement, linear motion retrofits, and new industrial automation installations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"669\" data-end=\"686\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"688\" data-end=\"1095\"\u003eThe Thomson A81420 Ball Bushing Bearing is widely used in precision automation equipment, CNC machining centers, pick-and-place systems, packaging and labeling machines, conveyor positioning systems, inspection equipment, medical devices, printing machinery, and custom OEM equipment requiring low-friction, anti-friction linear guidance with high positioning accuracy. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1097\" data-end=\"1126\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1128\" data-end=\"1952\"\u003e• Manufacturer: Thomson\u003cbr data-start=\"1151\" data-end=\"1154\"\u003e• Part Number: A81420\u003cbr data-start=\"1175\" data-end=\"1178\"\u003e• Product Type: Precision Ball Bushing Linear Bearing\u003cbr data-start=\"1231\" data-end=\"1234\"\u003e• Bearing Style: Closed\u003cbr data-start=\"1257\" data-end=\"1260\"\u003e• Material: Precision Steel\u003cbr data-start=\"1287\" data-end=\"1290\"\u003e• Nominal Shaft Diameter: 0.500 in (12.70 mm)\u003cbr data-start=\"1335\" data-end=\"1338\"\u003e• Outside Diameter: 0.875 in (22.23 mm)\u003cbr data-start=\"1377\" data-end=\"1380\"\u003e• Overall Length: 1.250 in (31.75 mm)\u003cbr data-start=\"1417\" data-end=\"1420\"\u003e• Shaft Compatibility: Thomson Class S Precision Shafting\u003cbr data-start=\"1477\" data-end=\"1480\"\u003e• Number of Ball Circuits: 4\u003cbr data-start=\"1508\" data-end=\"1511\"\u003e• Self-Aligning: No\u003cbr data-start=\"1530\" data-end=\"1533\"\u003e• Adjustable: No\u003cbr data-start=\"1549\" data-end=\"1552\"\u003e• Corrosion Resistant: No (Standard Version)\u003cbr data-start=\"1596\" data-end=\"1599\"\u003e• Dynamic Load Capacity: 85 lbf (378 N)\u003cbr data-start=\"1638\" data-end=\"1641\"\u003e• Maximum Operating Temperature: 260°C (500°F)\u003cbr data-start=\"1687\" data-end=\"1690\"\u003e• Coefficient of Friction: As Low As 0.001\u003cbr data-start=\"1732\" data-end=\"1735\"\u003e• Design Feature: Steel sleeve with recirculating ball elements for rigid, low-drag anti-friction linear motion\u003cbr data-start=\"1846\" data-end=\"1849\"\u003e• Mounting Type: Press-Fit Housing\u003cbr data-start=\"1883\" data-end=\"1886\"\u003e• Weight: 0.08 lb (0.036 kg) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1954\" data-end=\"1978\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1980\" data-end=\"2084\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Thomson A81420-NBALL\u003cbr data-start=\"2002\" data-end=\"2005\"\u003e• Thomson A81420-SS\u003cbr data-start=\"2024\" data-end=\"2027\"\u003e• Thomson A81420-LL\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Thomson","offers":[{"title":"New","offer_id":51714017919278,"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_725c0468-64fd-4d11-98ff-00502943e486.jpg?v=1770413892","url":"https:\/\/plgautomation.com\/products\/thomson-a81420-ball-bushing-for-anti-friction-linear-motion","provider":"PLG Automation ","version":"1.0","type":"link"}