20 Pack U Groove Bearing Set 4x13x4mm Carbon Steel Sealed Ball Bearings For Track Liner Motion System Pro Grade Heavy Duty Quiet Smooth Rolling Corrosion Resistant High Strength Lightweight Rail Wheel Rollers

20-Pack U Groove Sealed Ball Bearings for Linear Rail
✔️ 20 pcs carbon steel U-Groove sealed bearings, 13x4mm

The U Groove Sealed Guide Pulley bearings are compact, heavy-duty ball bearings designed for smooth linear motion in track and rail systems. They are commonly used in conveyor lines, automated machinery, and sliding door/gate setups to guide heavy loads with precision.

✅ Material: Carbon steel, surface polished for high strength and durability
✅ Bearing size: 13 x 4 mm (Diameter x Width)
✅ Inner hole diameter: 4 mm (0.14 in)
✅ Groove width: 2 mm, depth: 1 mm; sealed design
✅ Quantity: 20 pcs per pack

💡 What is a U Groove sealed ball bearing used for in heavy-load track and rail systems?

They’re handy for guiding heavy loads smoothly in linear guides and conveyors.

- High-load guidance in track and rail systems
- Sealed design protects against dust and moisture
- Carbon steel construction ensures durability and longevity
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