Professional Manufacturing
Reliable bearing production
ENGINEERING ACCESSFind the right AOSN solution
Search by modelBL205 — BL319ZZ technical data→Explore key seriesHigh-load and specialty bearings→Ask AOSNSend a drawing or part number→Featured Engineering Series
Built Around Real Operating Demands
Focused solutions for higher load capacity, difficult lubrication conditions and demanding industrial environments.
01 / HIGH LOAD CAPACITY
BL Maximum-Type Ball Bearings
Increased ball count for applications that demand higher radial load capacity.
View BL205—BL319ZZ data →
02 / DIFFICULT LUBRICATION
Solid Oil Bearings
Lubrication-retaining options for wet, dusty and maintenance-limited environments.
Explore Solid Oil →
03 / SPECIAL APPLICATIONS
Self-Lubricating Roller Bearings
Specialized arrangements for continuous operation and demanding steel applications.
View the series →About AOSN
Reliable Bearings. Built for Real-World Performance.
AOSN Bearings is a professional bearing manufacturer based in Hebei, China. We specialize in cylindrical roller bearings, needle roller bearings, automotive bearings and truck hub bearings.
From material selection and precision machining to assembly and final inspection, we maintain strict quality control throughout the production process. We provide reliable products, flexible customization and responsive service for distributors and industrial customers worldwide.
20+Years of Experience
1,800+Bearing Models
QCStrict Production Control
REAL FACTORY FOOTAGESee How AOSN Bearings Are Made
CORE PRODUCT CATEGORIES
Bearings for your application.
Explore eight product families and contact AOSN to confirm the right bearing specification.
Cylindrical Roller Bearings
High radial-load support for industrial shafts and gear drives.
Explore Series →
Needle Roller Bearings
Compact radial support for space-constrained bearing arrangements.
Explore Series →
Clutch Bearings
Bearing solutions for clutch release and engagement applications.
Explore Series / Inquire →
Deep Groove Ball Bearings
Versatile low-friction support for motors and general machinery.
Explore Series →
Tapered Roller Bearings
Combined radial and axial load support in a separable design.
Explore Series →
Maintenance-Free Truck Wheel Hub Bearings
Wheel hub bearing options: confirm sealing and lubrication requirements.
Explore Series / Inquire →
Double Row Tapered Roller Bearings
Two-row arrangements for radial and bidirectional axial loads.
Explore Series →
Transmission Bearings
Explore cylindrical roller bearings for automotive transmission shafts.
Explore Series →Deep Groove Ball Bearing Series
Deep Groove Ball Bearing Specifications
Reference dimensions, adjusted load ratings and limiting speeds. Contact AOSN to confirm availability, clearance, seals and precision grade.
| Model | Boundary dimensions | Basic load rating | Limiting speed | |||||
|---|---|---|---|---|---|---|---|---|
| d mm | D mm | B mm | r (min.) mm | Cr N | C0r N | Grease min-1 | Oil min-1 | |
| BL205 | 25 | 52 | 15 | 1 | 9480 | 6300 | 7200 | 9000 |
| BL205ZZ | 25 | 52 | 15 | 1 | 9480 | 6300 | 7200 | |
| BL305 | 25 | 62 | 17 | 1.1 | 14220 | 9300 | 6600 | 7800 |
| BL305ZZ | 25 | 62 | 17 | 1.1 | 14220 | 9300 | 6600 | |
| BL206 | 30 | 62 | 16 | 1 | 13920 | 9780 | 6000 | 7200 |
| BL206ZZ | 30 | 62 | 16 | 1 | 13920 | 9780 | 6000 | |
| BL306 | 30 | 72 | 19 | 1.1 | 18300 | 12420 | 5400 | 6600 |
| BL306ZZ | 30 | 72 | 19 | 1.1 | 18300 | 12420 | 5400 | |
| BL207 | 35 | 72 | 17 | 1.1 | 18300 | 13260 | 5400 | 6600 |
| BL207ZZ | 35 | 72 | 17 | 1.1 | 18300 | 13260 | 5400 | |
| BL307 | 35 | 80 | 21 | 1.5 | 24600 | 17460 | 4800 | 5700 |
| BL307ZZ | 35 | 80 | 21 | 1.5 | 24600 | 17460 | 4800 | |
| BL208 | 40 | 80 | 18 | 1.1 | 23400 | 17280 | 4800 | 5700 |
| BL208ZZ | 40 | 80 | 18 | 1.1 | 23400 | 17280 | 4800 | |
| BL308 | 40 | 90 | 23 | 1.5 | 30600 | 21600 | 4500 | 5400 |
| BL308ZZ | 40 | 90 | 23 | 1.5 | 30600 | 21600 | 4500 | |
| BL209 | 45 | 85 | 19 | 1.1 | 24600 | 19200 | 4500 | 5400 |
| BL209ZZ | 45 | 85 | 19 | 1.1 | 24600 | 19200 | 4500 | |
| BL309 | 45 | 100 | 25 | 1.5 | 36600 | 26400 | 3780 | 4800 |
| BL309ZZ | 45 | 100 | 25 | 1.5 | 36600 | 26400 | 3780 | |
| BL210 | 50 | 90 | 20 | 1.1 | 25800 | 21000 | 4020 | 5100 |
| BL210ZZ | 50 | 90 | 20 | 1.1 | 25800 | 21000 | 4020 | |
| BL310 | 50 | 110 | 27 | 2 | 42900 | 31500 | 3600 | 4260 |
| BL310ZZ | 50 | 110 | 27 | 2 | 42900 | 31500 | 3600 | |
| BL211 | 55 | 100 | 21 | 1.5 | 31800 | 26400 | 3180 | 4500 |
| BL211ZZ | 55 | 100 | 21 | 1.5 | 31800 | 26400 | 3180 | |
| BL311 | 55 | 120 | 29 | 2 | 49500 | 36900 | 3360 | 4020 |
| BL311ZZ | 55 | 120 | 29 | 2 | 49500 | 36900 | 3360 | |
| BL212 | 60 | 110 | 22 | 1.5 | 38400 | 32400 | 3360 | 4020 |
| BL212ZZ | 60 | 110 | 22 | 1.5 | 38400 | 32400 | 3360 | |
| BL312 | 60 | 130 | 31 | 2.1 | 56400 | 42900 | 3000 | 3600 |
| BL312ZZ | 60 | 130 | 31 | 2.1 | 56400 | 42900 | 3000 | |
| BL213 | 65 | 120 | 23 | 1.5 | 42000 | 36000 | 3180 | 3780 |
| BL213ZZ | 65 | 120 | 23 | 1.5 | 42000 | 36000 | 3180 | |
| BL313 | 65 | 140 | 33 | 2.1 | 67800 | 53700 | 2880 | 3360 |
| BL313ZZ | 65 | 140 | 33 | 2.1 | 67800 | 53700 | 2880 | |
| BL214 | 70 | 125 | 24 | 1.5 | 45600 | 39600 | 3000 | 3600 |
| BL214ZZ | 70 | 125 | 24 | 1.5 | 45600 | 39600 | 3000 | |
| BL314 | 70 | 150 | 35 | 2.1 | 76200 | 61200 | 2580 | 3180 |
| BL314ZZ | 70 | 150 | 35 | 2.1 | 76200 | 61200 | 2580 | |
| BL215 | 75 | 130 | 25 | 1.5 | 47400 | 43200 | 2700 | 3360 |
| BL215ZZ | 75 | 130 | 25 | 1.5 | 47400 | 43200 | 2700 | |
| BL315 | 75 | 160 | 37 | 2.1 | 82800 | 69600 | 2400 | 3000 |
| BL218ZZ | 90 | 160 | 30 | 2 | 70200 | 64200 | 2280 | |
| BL318 | 90 | 190 | 43 | 3 | 104400 | 96600 | 2040 | 2400 |
| BL318ZZ | 90 | 190 | 43 | 3 | 104400 | 96600 | 2040 | |
| BL219 | 95 | 170 | 32 | 2.1 | 79800 | 73800 | 2160 | 2580 |
| BL219ZZ | 95 | 170 | 32 | 2.1 | 79800 | 73800 | 2160 | |
| BL319 | 95 | 200 | 45 | 3 | 111600 | 106800 | 1680 | 2160 |
| BL319ZZ | 95 | 200 | 45 | 3 | 111600 | 106800 | 1680 | |
Deep Groove Ball Bearing Series
Original AOSN product photography. Final appearance may vary by specification.Selected Product
BL215 Series
Open Maximum-Type Deep Groove Ball Bearing
Boundary Dimensions
- Bore diameter d
- 75 mm
- Outside diameter D
- 130 mm
- Width B
- 25 mm
- Corner radius r (min.)
- 1.5 mm
Basic Load Rating
- Cr
- 47400 N
- C0r
- 43200 N
Limiting Speed
- Grease
- 2700 min-1
- Oil
- 3360 min-1
Need another model? Send us the bearing number or your technical drawing.
Engineering Resources
Tools That Make Sourcing Easier
Practical support for part-number identification, specification confirmation and international purchasing.
01
Bearing Search
Compare product families and request detailed model data.
Explore products →02Cross Reference
Send an existing brand or model number for an AOSN equivalent.
Request cross-reference →03Drawing Review
Share your drawing, application and working conditions with our team.
Send technical details →04Catalog Request
Request product data, packing information and export documents.
Get product information →Industry Applications
Bearings for Industrial Applications
Gear drives and seven further application areas. Explore operating conditions and related bearing families.
Gear Drives & Gearboxes
Bearings for the shafts that transmit power.
Explore applications →
Metallurgical Equipment
Bearing arrangements for heavy industrial processes.
Explore applications →
Wind Turbines
A technical review for demanding wind-energy duty.
Explore applications →
Papermaking Machinery
Review heat, moisture and continuous operation.
Explore applications →
Food Machinery
Selection begins with the process and cleaning conditions.
Explore applications →
Industrial Motors
Stable shaft support for rotating electric machinery.
Explore applications →
Mining & Construction Machinery
Plan for impact loads and exposed environments.
Explore applications →
Pumps & Compressors
Match the bearing arrangement to the rotating process.
Explore applications →Manufacturing & Quality
Precision Manufacturing & Quality Control
Clear process control from machining through final inspection helps AOSN deliver consistent bearing performance.
Precision Grinding
Controlled machining and raceway finishing for dimensional consistency.
Automatic Assembly
Standardized assembly processes for stable product quality.
Raceway Inspection
Dimensional and surface checks at critical production stages.
Final Quality Inspection
Final verification before packing and international shipment.
Why Choose AOSN
A Dependable Partner Beyond the Product
Practical support designed for distributors, OEM buyers and industrial maintenance teams.
Application Support
Model selection and cross-reference assistance based on operating requirements.
Flexible Supply
Support for standard models, OEM requirements and special bearing solutions.
Responsive Communication
Clear quotation, specification confirmation and international order coordination.
Knowledge & Updates
From the AOSN Resource Center
Technical guidance and purchasing insights for bearing distributors and industrial users.
How to Identify the Right Bearing from Dimensions
Start with bore, outside diameter and width, then confirm load, speed and sealing requirements.
Ask an engineer →Why Maximum-Type Bearings Carry More Load
A filling-slot construction accommodates more rolling elements than a conventional design.
Explore Product Series →Information to Include in a Faster RFQ
Provide model, quantity, application, target delivery and any inspection requirements.
Start your inquiry →Start Your Inquiry
Send Your Bearing List or Part Number
Include model, quantity, application and target delivery for a faster quotation. Our sales team will reply by email.
Shenwan Bearing Manufacturing Co., Ltd.
Hebei, China
jack@aosnbearing.com