Premium Quality U Groove Bearings 20 Pack Carbon Steel Sealed Ball Bearings 4Mm Bore 13X7Mm Rail Roller Wheels Built Damn Tough For Smooth Linear Motion Slides And Heavy Duty Tracking Gear

Pack of twenty sealed roller wheels for quiet machine slide paths
✔️ Set of twenty carbon steel rollers with a 4 mm / 0.16 inch bore gap

You get reliable track support for light machinery and sliding gates. These sealed groove bearings guide cart wheels along straight metal rails. They keep dust out while you run steady friction control on conveyor racks. Please confirm your gap size before installing them.

✅ Material builds from hardened carbon steel with a polished silver finish
✅ Inner hole measures 4 mm / 0.16 inch for snug shaft mounting
✅ Overall body sits at 13 x 7 mm / 0.5 x 0.26 inch across the track
✅ Groove width spans 4.5 mm / 0.18 inch and depth drops 1.5 mm / 0.06 inch
✅ You receive twenty individual pieces ready for immediate assembly

💡 Why choose sealed groove track rollers for industrial linear slide units
1. Standard steel construction delivers superior load capacity over basic polymer options.
2. Dust tight seals protect internal rolling elements from workshop debris and moisture.
3. Fixed outer dimensions guarantee straight wheel placement on mismatched aluminum brackets.
4. These handy upgrades prevent jittery movements and extend the lifespan of your automated frames.

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