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WSFA
Small Size · Large Load · High Rigidity · Space-Saving · Long Life
Needle Roller Bearing is a kind of roller bearing with thin and long cylindrical rollers (needle rollers). It features ultra-compact structure, small radial section, large load capacity, high rigidity and excellent anti-rust performance. It is specially designed for limited installation space and heavy radial load conditions. Widely used in automobile gearboxes, engines, motorcycle parts, textile machinery, office equipment, power tools and other small precision equipment.
Without inner ring, only needle roller & cage, save space, easy to install.
With inner ring, high precision, suitable for rough shaft surface, convenient to use.
Outer ring + needle roller + cage, no inner ring, ultra-thin structure.
Various structures for different equipment, complete specifications.
Small radial dimension, perfect for limited installation space.
Large contact area, strong load capacity, high rigidity.
High machining precision, stable operation, low noise.
High-quality bearing steel, high hardness, durable.
Various structures, easy to mount and dismount.
RNA, NK, NKI, HK, BK series complete, large stock.
Common Models & Standard Sizes | Model | d (mm) | D (mm) | B (mm) | Type |
|---|---|---|---|---|
| RNA4900 | 10 | 22 | 13 | RNA |
| RNA4901 | 12 | 24 | 13 | RNA |
| RNA4902 | 15 | 28 | 13 | RNA |
| RNA4903 | 17 | 30 | 13 | RNA |
| RNA4904 | 20 | 32 | 18 | RNA |
| RNA4905 | 25 | 37 | 18 | RNA |
| RNA5900 | 10 | 22 | 18 | RNA |
| RNA5902 | 15 | 28 | 18 | RNA |
| NK10/12 | 10 | 17 | 12 | NK |
| NK12/12 | 12 | 19 | 12 | NK |
| NK15/12 | 15 | 22 | 12 | NK |
| NK17/12 | 17 | 24 | 12 | NK |
| NK20/16 | 20 | 28 | 16 | NK |
| NK25/16 | 25 | 33 | 16 | NK |
| NK30/20 | 30 | 38 | 20 | NK |
| NKI10/16 | 10 | 22 | 16 | NKI |
| NKI12/16 | 12 | 24 | 16 | NKI |
| NKI15/16 | 15 | 27 | 16 | NKI |
| NKI20/20 | 20 | 32 | 20 | NKI |
| NKI25/20 | 25 | 38 | 20 | NKI |
| HK0810 | 8 | 12 | 10 | HK |
| HK1012 | 10 | 14 | 12 | HK |
| HK1210 | 12 | 16 | 10 | HK |
| HK1512 | 15 | 21 | 12 | HK |
| BK0810 | 8 | 12 | 10 | BK |
| BK1012 | 10 | 14 | 12 | BK |
| BK1210 | 12 | 16 | 10 | BK |
| BK1512 | 15 | 21 | 12 | BK |
Roller Material: High-quality GCr15 bearing steel, high hardness and wear resistance
Cage Material: Nylon 66, steel, brass, low noise and stable
Precision Grade: P0, P6, high precision, stable operation
Heat Treatment: High-temperature quenching, hardness HRC 60-64
Surface Treatment: Anti-rust treatment, strong corrosion resistance
Clearance: Standard clearance, suitable for most equipment
Inner Package: Anti-rust plastic bag, box, label
Outer Package: Standard export carton + plywood pallet
Stock Order: 3-7 working days, fast delivery
Bulk Order: 7-15 working days, stable supply
Shipping: Sea, air, express (DHL, FedEx, UPS, TNT, EMS)
Port: Shanghai, Ningbo, Guangzhou, Qingdao
T/T: 30% deposit, 70% balance before shipment
L/C: Irrevocable L/C at sight
Trade Assurance: 100% safe payment
Western Union / MoneyGram: For small orders
PayPal: For sample and small amount
Warranty: 12 months quality warranty
Inspection: 100% strict inspection before shipment
Technical Support: 24 hours online service
Free Service: Free model selection and installation guide
After-Sale: Free replacement for quality problems
Response: Quick reply within 2 hours
20+ Years: Professional bearing manufacturer
Advanced Equipment: Full-automatic production & testing lines
Certifications: ISO9001, CE, SGS, ROHS
Complete Models: Full series with large stock
OEM & ODM: Custom logo, package, structure
Global Market: Export to 80+ countries
Professional Team: R&D, sales, after-sales one-stop service
Contact us for factory direct price, free samples & full technical support!
