30309DJR Metric Tapered Roller Bearing 45x100x27.25mm Separable Cone Cup Vehicle Machinery Bearing

30309DJR is single row metric separable tapered roller bearing, dimension 45×100×27.25mm, composed of cone assembly and single flange outer cup. DJR optimized internal roller geometry delivers uniform stress distribution. Separable structure simplifies installation and maintenance. It supports heavy radial load and one-way axial thrust, widely used for truck hubs, agricultural tractors, construction machinery gearboxes.

Model: 30309DJR
d:45mm, D:100mm, T:27.25mm
Cone width B:25mm, Cup width C:18mm
Min fillet r:2mm, r1:1.5mm
Dynamic load Cr:119kN, Static load C0r:107kN
Grease limiting speed:3400r/min
Net weight:0.97kg
Structure: Single row separable cone & cup open type
Cage: Stamped steel cage
Material: GCr15 bearing steel, HRC60-65
Clearance: Standard CN, C3 customizable
Precision: P0 standard, P6/P5 optional
Temp range: -30℃~120℃
Drawings and durability test reports available on request.

• Separable cone and cup, no full shaft disassembly for component replacement
• DJR optimized crowned rollers, eliminate edge stress and extend fatigue service life
• Excellent composite load capacity for vehicle transmission and wheel hub positions
• High-strength stamped steel cage stable under continuous vibration and impact
• Superfinished raceways reduce friction heat and prevent premature bearing burnout
• Standard metric size, fully interchangeable with mainstream international brands
• Custom clearance, high-temperature grease and exclusive laser marking available

• Commercial vehicles: Light & medium truck wheel hubs, pickup axles
• Agricultural machinery: Tractor drive shafts, harvester rotary assemblies
• Construction equipment: Small loader hubs, engineering gearboxes
• General machinery: Conveyor drive ends, agricultural processing equipment

Suitable for OEM assembly and aftermarket replacement of mobile machinery with composite radial and axial loads.

25 years production experience of metric tapered roller bearings. Vacuum smelting GCr15 steel with complete quenching and tempering heat treatment for stable hardness. Full OEM & ODM customization for clearance, lubricant and surface marking. Strict full-process inspection covers raw material test, raceway superfinishing, roller sorting and vibration aging test. 24-hour professional technical support for load matching, shaft tolerance selection and regular relubrication plans. Factory direct bulk price, stable stock for global auto and machinery buyers.

1. Raw material chemical composition and hardness inspection
2. Integral quenching and stress relief tempering
3. CNC turning and ultra-precision raceway grinding
4. Precise stamped steel cage forming
5. Dust-free assembly with quantitative grease filling
6. High-speed aging and radial-axial composite load fatigue testing
7. Final full dimension inspection, anti-rust coating, neutral export carton packaging

Each batch passes vibration and noise test to guarantee stable operation in dusty and bumpy harsh environments.

Send inquiries for 30309DJR bearings used on medium trucks, tractors and small construction loaders.
Services after inquiry:

1. Standard quotation document delivered within 24 working hours
2. Technical guidance for paired bearing installation, tolerance matching and maintenance lubrication
3. Upgrade options: P5 high precision grade, C3 enlarged clearance, high-temperature synthetic grease
4. Competitive factory bulk price for large quantity orders

Please state order quantity, load, speed and working environment for complete formal quotation.