{"product_id":"needle-roller-cage-kt81211c3-8-mm-id-x-12-mm-od-x","title":"Needle Roller Cage KT81211C3 8 mm ID x 12 mm OD x 11 mm Width C3 Tolerance High Carbon Steel Precision Insert for Linear Slide Units Single Piece Bearing Insert Fits Sealed Housings","description":"\u003cp\u003eNeedle roller cage KT81211C3, 8 mm x 12 mm x 11 mm\u003cbr\u003e\n✔️ High carbon steel, C3 roller tolerance, single piece, KT series\u003c\/p\u003e\n\n\u003cp\u003eThis single needle roller cage is a compact bearing insert used in linear slide units, small gearboxes, and sealed bearing assemblies. It provides tight radial support where space is limited.\u003c\/p\u003e\n\n✅ Inner diameter: 8 mm; outer diameter: 12 mm; width: 11 mm\u003cbr\u003e\n✅ Material: high carbon steel; C3 tolerance on roller diameter\u003cbr\u003e\n✅ Dynamic load capacity 4630 N; static load capacity 4170 N; max speed 60,000 rpm\u003cbr\u003e\n✅ Temperature range -20 to 120 °C; series KT; model KT81211C3\u003cbr\u003e\n✅ Single piece pack; weight 0.010 lb; sold each\u003cbr\u003e\n✅ Fits sealed ball bearing housings and linear slide units; can pair with ceramic rollers for specific applications\u003cbr\u003e\n\n\u003cp\u003e💡 What is a needle roller cage used for in linear slide units and sealed bearing assemblies?\nNeedle roller cages hold multiple thin rollers to deliver high radial load capacity in confined spaces; they're handy when you need compact, low-profile bearing support.\nHere’s a short breakdown of typical benefits:\n- Provides high radial load support in compact linear slide units and sealed assemblies, improving load distribution and reducing wear.\n- Compatible with sealed ball bearing setups and can be paired with ceramic rollers for higher speed or lower friction needs.\n- Ideal for small gearboxes, actuator shafts, and precision linear guides where tight clearance and C3 tolerance maintain performance.\u003c\/p\u003e","brand":"MRO","offers":[{"title":"Default Title","offer_id":47969357267179,"sku":"1911880","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/b55729945f4bea20ba4b5b3cf93d5361.png?v=1775237176","url":"https:\/\/vxb.com\/products\/needle-roller-cage-kt81211c3-8-mm-id-x-12-mm-od-x","provider":"VXB Bearings","version":"1.0","type":"link"}