Single UK312+H2312 Heavy Duty Wide Inner Ring Adapter Sleeve 55mm ID Concentric Locking for Ball Bearing Inserts with Spherical OD, Contact Seal, Relubrication, steel insert, 8300 kgf

Single UK312+H2312 55mm wide adapter sleeve insert
✔️ 55mm ID; concentric lock adapter; contact seal; relubrication

This single heavy-duty adapter sleeve is a 55mm inner-diameter insert used with sealed ball bearing units in conveyors, motors, and linear slide units.

✅ Model: UK312+H2312
✅ I.D.: 55mm (inner ring wide)
✅ Insert type: ball bearing, bearing steel
✅ Locking: concentric adapter
✅ O.D. style: spherical outer diameter
✅ Seals: contact seal with slinger; relubrication yes
✅ Dynamic rating: 8300 kgf; Static rating: 5300 kgf
✅ High temp rating: 212F; HTS: 8483.20.40.40

💡 What is an adapter sleeve used for in sealed ball bearing assemblies? An adapter sleeve lets you mount and secure a bearing insert onto a shaft quickly and safely. - Helps achieve concentric locking and precise shaft alignment for sealed ball bearings and linear slide units. - Supports heavy static and dynamic loads while allowing relubrication and protecting contact seals. - Works with spherical OD housings and bearing steel inserts; can be used with ceramic ball bearing setups.