{"product_id":"thk-shw21-linear-motion-caged-ball-bearing-carriage-block","title":"THK SHW21 Linear Motion Caged Ball Bearing Carriage Block","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"720\"\u003eThe THK SHW21 Linear Motion Caged Ball Bearing Carriage Block is a wide-profile linear guide block measuring 21 mm × 68 mm × 59 mm, engineered for SHW21 series guide rails to deliver high rigidity, excellent moment load capacity, and smooth, accurate linear motion. Commonly installed in semiconductor manufacturing equipment, precision automation systems, medical devices, packaging machinery, robotic equipment, and industrial inspection systems requiring compact yet rigid linear guidance. Maintenance teams and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this carriage block for machine repair, OEM replacement, retrofit projects, and restoring precision linear motion performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"722\" data-end=\"739\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"741\" data-end=\"1206\"\u003eThe THK SHW21 carriage block is designed for precision linear motion systems where compact dimensions, high load capacity, and superior moment rigidity are essential. Its wide-rail configuration enables stable operation in single-axis applications and is widely used in CNC auxiliary axes, laboratory automation, electronic assembly equipment, vision systems, pick-and-place machines, and precision material handling equipment. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1208\" data-end=\"1237\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1239\" data-end=\"2361\"\u003e• Manufacturer: THK\u003cbr data-start=\"1258\" data-end=\"1261\"\u003e• Product Type: Linear Motion Caged Ball Bearing Carriage Block\u003cbr data-start=\"1324\" data-end=\"1327\"\u003e• Series: SHW Caged Ball LM Guide\u003cbr data-start=\"1360\" data-end=\"1363\"\u003e• Model: SHW21CA\u003cbr data-start=\"1379\" data-end=\"1382\"\u003e• Compatible Rail Size: SHW21\u003cbr data-start=\"1411\" data-end=\"1414\"\u003e• Overall Height: 21 mm\u003cbr data-start=\"1437\" data-end=\"1440\"\u003e• Overall Width: 68 mm\u003cbr data-start=\"1462\" data-end=\"1465\"\u003e• Overall Length: 59 mm\u003cbr data-start=\"1488\" data-end=\"1491\"\u003e• Block Style: CA Flange Type\u003cbr data-start=\"1520\" data-end=\"1523\"\u003e• Mounting Style: Flanged block with tapped holes for top or bottom mounting\u003cbr data-start=\"1599\" data-end=\"1602\"\u003e• Guide Type: Wide-Rail, Low-Profile Linear Motion Guide\u003cbr data-start=\"1658\" data-end=\"1661\"\u003e• Ball Retainer: Caged Ball Design\u003cbr data-start=\"1695\" data-end=\"1698\"\u003e• Dynamic Load Rating: 8.24 kN\u003cbr data-start=\"1728\" data-end=\"1731\"\u003e• Static Load Rating: 12.8 kN\u003cbr data-start=\"1760\" data-end=\"1763\"\u003e• Mounting Hole Thread: M5\u003cbr data-start=\"1789\" data-end=\"1792\"\u003e• Weight: Approximately 0.24 kg\u003cbr data-start=\"1823\" data-end=\"1826\"\u003e• Lubrication: Grease or Oil Lubrication\u003cbr data-start=\"1866\" data-end=\"1869\"\u003e• Seal Options: UU or SS end seals available\u003cbr data-start=\"1913\" data-end=\"1916\"\u003e• Accuracy Grades: Normal, High (H), Precision (P), Super Precision (SP), Ultra Precision (UP)\u003cbr data-start=\"2010\" data-end=\"2013\"\u003e• Material: Hardened Bearing Steel (stainless steel version available with \"M\" designation)\u003cbr data-start=\"2104\" data-end=\"2107\"\u003e• Features: Four-way equal load design, high moment rigidity, low-profile construction, self-aligning capability, low noise, long service life, high-speed operation, and compatibility with THK QZ lubrication systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2363\" data-end=\"2387\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2389\" data-end=\"2438\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• THK SHW21CA1UU\u003cbr data-start=\"2405\" data-end=\"2408\"\u003e• THK SHW21CAN\u003cbr data-start=\"2422\" data-end=\"2425\"\u003e• THK HRW21CA\u003c\/p\u003e","brand":"THK","offers":[{"title":"New","offer_id":51713983283502,"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_108df33e-d51b-4258-9d12-d48a724adc35.jpg?v=1770412932","url":"https:\/\/plgautomation.com\/products\/thk-shw21-linear-motion-caged-ball-bearing-carriage-block","provider":"PLG Automation ","version":"1.0","type":"link"}