Heavy Duty Stainless Steel V Bearing Pulley Wheels For Zipline Trolley Replacement Double Shielded 20 Pack Smooth Glide Rust Resistant Bearing Set Rock Solid Design For Weekend Builds

20x Carbon Steel V Groove Sealed Bearings for Linear Guides
✔️ 20pcs 3mm 0.12" 12mm 0.47" Shielded Steel V-Roller

You get smooth rolling action on zipline sleds or custom slider tracks with this set of sealed V wheels. The double shields lock in grease while blocking dust so your assemblies stay fluid through outdoor shoots or garage builds. Twenty bearings per pack lets you outfit multiple carts or swap out stripped units without hunting for loose singles. Tough carbon steel construction keeps these rollers square under load even when you haul heavy material across metal runs.

✅Solid rollers measure 3mm 0.12" bore, 12mm 0.47" O.D. and stand 4mm 0.15" high ✅Double shields keep lubricant trapped while blocking dust from the 3mm 0.12" shaft area ✅Deep 1.4mm 0.05" V-groove with 2.8mm 0.11" width centers pins for wobble-free tracking ✅Twenty pieces per pack supports multi-point installs on zipline trolleys or linear slides ✅Quick replacement design works with standard fixtures for easy swaps in mobile gear setups

💡How do sealed V groove pulleys help your linear projects run smoothly?

These bearings guide rollers along tracks to cut drag so you haul weight with consistent roll speed.

• Solid carbon steel cores handle hard pulls while shields trap grease to extend service intervals.
• The 90-degree V channel locks wheels onto rails so wiper effects won't pull your cart sideways.
• Two-layer seals keep dust out and save oil buildup for hassle-free sliding across guides.
• Pack of twenty units covers multi-point mounts on DIY ziplines or heavy tooling slides.