{"product_id":"20mm-extra-narrow-set-screw-ball-insert-kfl004-2-b","title":"20mm Extra Narrow Set-Screw Ball Insert KFL004, 2-Bolt Flange Housing FL04-5, M8 Bolt Size, ZDC Alloy Case, Bearing-Steel Inner Ring, Extra-Narrow I.D., Mounted Unit for Linear Slide Systems and General Purpose","description":"20mm Extra Narrow 2-Bolt Set-Screw Ball Insert\u003cbr\u003e\n✔️ I.D. 20mm, extra-narrow inner ring, M8 bolts, set-screw lock\n\n\u003cp\u003eThis is a single 20mm extra-narrow ball insert (KFL004) for 2-bolt flange mounting, used where compact shaft support is needed in light-duty assemblies and linear slide systems.\u003c\/p\u003e\n\n✅ Model KFL004, single unit each\u003cbr\u003e\n✅ I.D. 20mm, extra-narrow inner ring\u003cbr\u003e\n✅ Insert type: ball bearing, bearing-steel material\u003cbr\u003e\n✅ Housing: ZDC alloy, FL04-5 2-bolt flange\u003cbr\u003e\n✅ Bolt size M8 with set-screw locking\u003cbr\u003e\n✅ Seal: contact seal type, no relubrication required\u003cbr\u003e\n✅ Duty: light, temperature up to 212F (100C)\u003cbr\u003e\n✅ HTS 8483.20.40.40, fits linear slide units and mounted applications\u003cbr\u003e\n\n\u003cp\u003e💡 What is a 2-bolt flange ball bearing insert used for in mounted linear systems?\nA 2-bolt flange ball insert gives a compact, easy-to-install bearing support for shafts in mounted assemblies and linear slide units.\nShort entry on typical use:\n- Provides quick flange mounting for shaft support and alignment in linear slide units and conveyors\n- Works as a sealed ball bearing or open insert with contact seal, ideal where bearing-steel inner rings are preferred\n- Common in light-duty machinery, jigs, conveyors, and DIY shafting where a set-screw locking insert is handy\n- Can be paired with ceramic or hybrid rollers when corrosion or high-speed needs emerge\u003c\/p\u003e","brand":"MRO","offers":[{"title":"Default Title","offer_id":47971406053611,"sku":"MRO803285","price":295.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/129abf936883a6a7381e7438978ce082.jpg?v=1773813570","url":"https:\/\/vxb.com\/products\/20mm-extra-narrow-set-screw-ball-insert-kfl004-2-b","provider":"VXB Bearings","version":"1.0","type":"link"}