30321 Tapered Roller Bearing
30321 is a large‑bore single‑row tapered roller bearing from metric 303 high‑thrust series. Its distinctive steep taper angle delivers enhanced one‑way axial thrust capacity while maintaining good radial load‑bearing capability. This bearing adopts separable cone‑cup assembly, making preload setting and component replacement straightforward during equipment assembly and field overhaul. Manufactured from high‑grade GCr15 bearing steel, it adapts well to heavy‑load operations with recurring impact shocks, earning wide recognition among heavy‑equipment OEM producers and global spare‑part distributors.
30321 Full Technical Specs
表格
| Parameter | Value |
|---|---|
| Bearing Type | Single Row Tapered Roller Bearing |
| Model | 30321 |
| Bore d | 105 mm |
| Outer Diameter D | 225 mm |
| Total Width T | 53.5 mm |
| Inner Ring Width B | 49 mm |
| Outer Ring Width C | 41 mm |
| Approx Weight | 9.08 kg |
Core dimension: 105 × 225 × 53.5 mm (d × D × T)
Key Product Strengths
Increased taper angle design provides prominent single‑direction thrust performance compared to standard 302 series bearings
Fully detachable inner cone and outer cup, supports quick disassembly, on‑site inspection and preload fine‑tuning
Precision‑ground roller and raceway surfaces mitigate friction heat accumulation and slow down wear rate
Optional P0, P6, P5 precision grades to satisfy varied transmission accuracy requirements
Open‑type structure works compatibly with high‑viscosity grease and circulating oil lubrication setups
Sturdy stamped steel cage keeps rollers stably arranged under variable heavy‑load cycles
Real‑World Application Scenarios
30321 tapered roller bearings are extensively applied for large heavy‑duty rotating parts: heavy‑duty off‑road vehicle axle hubs, high‑torque industrial gear reducers, mining plant transmission assemblies, oversized agricultural processing machines, engineering machinery main gearboxes and heavy‑load conveyor shafts. For bidirectional thrust demands, it is normally installed in opposed paired configurations.
Supply & Custom Options
Boyuan Bearing manufactures and maintains stock for 30321 tapered roller bearings. We accept small sample test orders, large‑volume export shipments and OEM custom projects. Special internal clearance and alternative cage configurations can be offered according to your actual operating‑condition requirements.
Contact Boyuan Bearing for 30321 stock updates, complete technical datasheets and competitive wholesale pricing.
