LK211-2F+H2311 Taper Bore Spherical Insert Bearing With H2311 Adapter Sleeve Double 2F Seal 50x100mm Conveyor Farm Machinery
The LK211-2F+H2311 complete assembly consists of LK211-2F tapered bore spherical insert bearing and matched H2311 adapter sleeve, designed for heavy-duty transmission equipment. It features 1:12 tapered inner bore, double-sided 2F reinforced NBR multi-lip contact seals and built-in grease nipple for regular relubriion.
It is widely applied in large agricultural harvesters and heavy-duty conveyors under dusty and muddy environment with alternating heavy load conditions.
| Parameter | Value |
|---|---|
| Model | LK211-2F+H2311 |
| Applicable Shaft Diameter (d1) | 50mm |
| Bearing Taper Inner Bore (d) | 55mm |
| Outer Diameter (OD) | 100mm |
| Bearing Width B | 33mm |
| Outer Ring Width C | 25mm |
| Matching Adapter Sleeve | H2311 |
| Sleeve Overall Length B1 | 37mm |
| Sleeve Outer Diameter d3 | 75mm |
| Lock Nut | KM11, Lock Washer: MB11 |
| Thread Spec | M55×2 |
| Structure | Single row spherical outer insert bearing, 1:12 taper bore, double-sided 2F dust seal, relubriable |
| Material | GCr15 high carbon chromium bearing steel |
| Self-aligning Angle | ±1.5° |
| Internal Clearance | Standard C0 clearance |
| Cage | Stamped steel cage |
| Basic Dynamic Load Cr | 43500N |
| Basic Static Load C0r | 29000N |
| Grease Limiting Speed | 4500rpm |
| Total Net Weight | 1.48kg |
| Operating Temperature | -20℃ ~ +120℃ |
| Relubriion Port | With built-in grease fitting |
| Min Fillet Radius r | 1.5mm |
- High heavy radial & axial load capacity for large agricultural and heavy conveying equipment
- Complete matching set: LK211-2F bearing + H2311 sleeve, one-stop purchase and simple installation
- 1:12 tapered bore + adapter sleeve locking structure, uniform clamping force for stable fixation on 50mm shaft
- Spherical outer ring self-aligning design to compensate shaft installation deflection and housing misalignment
- Double-sided 2F multi-lip reinforced seal effectively blocks heavy dust, farm crop residues and splashing muddy water
- High-strength stamped steel cage resists deformation under long-term continuous heavy vibration
- Built-in grease nipple supports periodic refueling to extend whole bearing service life
- Custom design available (C3 clearance, open type, heavy mud-proof reinforced seal)
This bearing set is widely used in:
- Heavy-duty large conveyor roller supporting assemblies
- Large farm tractors, grain harvesters, seeders and agricultural auxiliary transmission shafts
- Heavy packaging line rollers and large textile processing equipment
- Industrial large ventilation fans, water pumps and mixing transmission parts
- 25+ years experience in taper bore sealed insert ball bearing & adapter sleeve manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM & custom clearance/seal modifiion projects
- Strict full-process sealing, rotation and load inspection before shipment
- Fast response within 24 hours from professional engineering team
- Stable mass supply for long-term machinery factory cooperation
- Raw material composition & hardness inspection for GCr15 bearing steel
- Precision superfinishing machining for spherical outer raceway and tapered inner bore
- Complete quenching & tempering heat treatment control for bearing and sleeve
- Seal leakage test, clearance grouping and high-speed rotation aging testing
- Full dimensional final inspection & independent anti-rust packaging for bearing and sleeve separately
Looking for a complete double 2F sealed taper bore insert bearing set matched with H2311 sleeve?
- Fast quotation within 24 hours
- Professional technical parameter and drawing support
- Custom clearance and sealing solution recommendations
- Complete matching supply: H2311 sleeve, KM11 lock nut & MB11 lock washer
- Competitive factory direct wholesale price




Yes, we support OEM and custom production based on your drawings or special clearance/seal requirements.
Standard stock complete sets: 7–12 working days
Custom modified bearing products: 12–18 working days
Yes, we provide stable mass supply for long-term factory cooperative clients.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
