QJ328 Angular Contact Ball Bearing
Technical Specifications
| Model | QJ328 | |
|---|---|---|
| Old Code | 176328 | |
| d | 140 mm | Inside Diameter(I.D.) |
| D | 300 mm | Outside Diameter(O.D.) |
| B | 62 mm | Width |
| rsmin | 4 mm | |
| Cr | 340 kN | Dynamic Load Rating |
| Cor | 480 kN | Static Load Rating |
| Mass | 22.7 Kg | Weight |
| Grease | 1250 r/min | Limiting Speed (Grease Lubricated) |
| Oil | 1650 r/min | Limiting Speed(Oil Lubricated) |
| damin | 180 mm | |
| Damax | 260 mm | |
| ramax | 3 mm |
Main Dimensions
140mm × 300mm × 62mm
Bearing Type
Precision Rating
P0 (Standard) / P6 / P5 / P4 (Higher precision for demanding applications)
Cage
Steel cage
Material
- GCr15 Bearing Steel (Industry-standard for high load & fatigue resistance)
- GCr15SiMn
- GCr18Mo
- G20Cr2Ni4A
Clearance
C3 (standard), customizable to C0/C2/C4/C5
Brand
WJY / OEM Available
Origin
Quality Standard
Product Description
Four Point Angular Contact Ball Bearings (Model: QJ328 / 176328) are designed to handle combined radial and axial loads in both directions, providing high rigidity and precision. The bearing has a bore diameter of 140mm, outer diameter of 300mm, and a width of 62mm. The minimum fillet radius is 4mm. It offers a dynamic load capacity of 340kN and a static load capacity of 480kN. With a limiting speed of 1250 r/min for grease lubrication and 1650 r/min for oil lubrication, and a weight of 22.7 kg, it suits various industrial setups. The mounting dimensions include a minimum inner ring diameter of 180mm, maximum outer ring diameter of 260mm, and maximum fillet radius of 3mm. Ideal for precision machine tools, small to medium-sized industrial gearboxes, this bearing ensures reliable operation in different machinery. Manufactured to high-quality standards, it delivers exceptional precision and durability under varying loads, supporting both radial and bidirectional axial load requirements. The manufacturer offers a Standard 12-month warranty extendable up to 18 months through authorized Jinyu distributors. OEM solutions available.
Related Products
FAQ
Our bearings come with a 12-month warranty from the date of delivery. This warranty covers any manufacturing defects under normal operating conditions. For specific applications with extreme conditions, we can provide extended warranty options upon request.
For standard models that are in stock, we can ship within 3-5 working days after receiving payment. For standard models not in stock, lead time is typically 2-3 weeks.
For customized spherical roller bearings, lead time depends on the complexity of customization and quantity, usually ranging from 4-8 weeks. We can provide a more accurate timeline after evaluating your specific requirements.
We accept various payment terms including:
- T/T (Telegraphic Transfer): 30% deposit, 70% before shipment
- L/C (Letter of Credit): Irrevocable L/C at sight
- Western Union for small orders
- Negotiable terms for long-term customers
Yes, we provide comprehensive technical support including:
- Installation guidelines and recommendations
- Lubrication selection advice
- Maintenance schedules and procedures
- Online technical consultation via email and WhatsApp
- On-site technical support can be arranged for large projects (additional fees may apply)
Yes, we specialize in producing non-standard and customized spherical roller bearings. We can manufacture according to your drawings, samples, or specific technical requirements. Our engineering team will evaluate your requirements and provide a detailed quotation including design confirmation, material selection, and production timeline.
We offer flexible shipping options to meet your needs:
- Ocean Freight: Most economical for large orders and full container loads
- Land Transport: Suitable for regional deliveries and smaller shipments
Delivery Time:
- Standard bearings: 3-5 days for in-stock items
- Custom/OEM orders: 20-35 days for production and delivery
- Exact timing depends on order quantity, customization, and destination
Contact our sales team for specific shipping quotes and delivery estimates based on your location and requirements.
Our bearing pricing is influenced by several key factors:
- Precision Grade: P0 (Standard), P6, P5, or P4 precision levels
- Raw Materials: GCr15, GCr15SiMn, GCr18Mo, or other specialty steels
- Market Factors: Raw material costs and market demand
- Order Quantity: Volume discounts available for larger orders
- Customization: Special features, coatings, or modifications
For accurate pricing, we provide customized quotes based on your specific requirements. Please submit an inquiry with your needed specifications, quantities, and any special requirements for a detailed quotation.