{"product_id":"3mm-bore-bearing-x-13-5mm-u-groove","title":"3mm Bore Bearing x 13.5mm U-Groove Track Roller Bearing 3x13.5x4.4mm","description":"\u003cp\u003e3mm Bore U-Groove Nylon Pulley Bearing\u003cbr\u003e✔️ 3mm x 13.5mm x 4.4mm – Track Roller with Built-In Steel Bearing\u003c\/p\u003e\n\u003cp\u003eThis U-groove track roller combines a smooth nylon pulley with a precision steel ball bearing for guided motion on rails or tracks. Ideal for sliding systems, 3D printers, and custom automation builds where light weight and quiet rolling are key.\u003c\/p\u003e\n\u003cp\u003e✅ Inner Diameter (Bore): 3mm\u003cbr\u003e✅ Outer Diameter: 13.5mm\u003cbr\u003e✅ Tire Width: 4.4mm\u003cbr\u003e✅ Pulley Material: White nylon for quiet, smooth operation\u003cbr\u003e✅ Bearing: Built-in steel ball bearing\u003cbr\u003e✅ Style: U-groove track roller bearing\u003cbr\u003e✅ Standard: Metric\u003cbr\u003e✅ Quantity: 1 bearing\u003c\/p\u003e\n\u003cp\u003e💡 What are U-groove nylon pulley bearings used for?\u003cbr\u003eThese bearings are great for guided movement along round rods or edges, offering quiet motion, low friction, and reduced wear on the track  -  perfect for compact, low-load automation projects.\u003c\/p\u003e\n\u003cp\u003eRoll smooth and steady  -  grab this nylon U-groove bearing and keep your build moving with precision!\u003cbr\u003e\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":49313020510401,"sku":"UGROOVE-3X13-5X4-4-BEARING","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/0955\/3089\/files\/3mm-bore-bearing-with-13-5mm-round-nylon-pulley-u-groove-track-roller-bearing-3x13-5x4-4mm-vxb-ball-bearings-1-32680599421163_6517e0dd-a94d-4e55-a0b2-3bdd5908ce7e.jpg?v=1748647291","url":"https:\/\/smallbearings.com\/zh\/products\/3mm-bore-bearing-x-13-5mm-u-groove","provider":"Small Bearings","version":"1.0","type":"link"}