SKF Explorer NU 228 ECJ/C3 PRICE 550 EURO

Detailed technical data sheet of the SKF Explorer NU 228 ECJ/C3

General characteristics

The SKF Explorer NU 228 ECJ/C3 is a single row cylindrical roller bearing, designed to handle high radial loads and for high performance applications. It is ideal for applications requiring robustness, superior load capacity and extended life.

• Design : Lightweight series (NU), two flanges on the outer ring and none on the inner ring.
• Cage : Pressed steel cage type (ECJ).
• Clearance class : Higher than normal (C3), suitable for high temperature applications or more stringent mounting loads.

Technical specifications

• Internal diameter : 140 mm
• External diameter : 250 mm
• Width : 42 mm
• Weight : 9.4 kg
• Dynamic load capacity : 450 kN
• Static load capacity : 510 kN
• Fatigue load : 57 kN
• Reference speed : 2800 rpm
• Limit speed : 3200 rpm

Materials

This bearing is made of high-quality hardened steel, which offers superior wear resistance and long operating life. The steel cage is optimized to reduce friction and improve load capacity, thus increasing efficiency.

Use in sectors

The SKF Explorer NU 228 ECJ/C3 is used in industrial sectors that require reliability and high performance, such as:

• Heavy industry : Mills, gearboxes and turbines.
• Automotive : Transmission systems and axles.
• Energy sector : Applications in generators and electric motors.
• Precision Machinery : High-performance manufacturing tools.

Mathematical formulas to evaluate performance

1. Equivalent dynamic load : P=X⋅Fr+Y⋅FaP $=$ $X$ $\backslash$ cdot F_r $+$ Y $\backslash$ cdot $F\_a$ $P$ $=$

   • FrF_r $F$ r ​is
   • FaF_a $F$ a ​is
   • XX $X$ and YY $Y$ are load factors derived from the bearing configuration.

2. Theoretical bearing life : L10=(CP)pL_{10} = \left( \frac{C}{P} \right)^p $L$ 10 ​= $($ P C ​) p , where:

   • CC $C$ is the dynamic load capacity,
   • PP $P$ is the equivalent dynamic load,
   • pp $p$ is the exponent (usually 3 for roller bearings).

Advantages of purchasing ready for delivery

Purchasing a bearing like the SKF Explorer NU 228 ECJ/C3 ready for delivery offers numerous advantages:

• Reduced downtime : Immediate access to product helps avoid costly delays in operations.
• Quality assurance : Bearings ready in stock come directly from the manufacturer, guaranteeing authenticity and compliance with specifications.
• Better economic conditions : Avoiding customization reduces costs and makes purchasing in stock more convenient than custom-made orders.

Manufacturer's description - SKF

SKF is a leading global manufacturer of bearings and engineering solutions for reliability and sustainability. Founded in 1907, SKF is known for the quality of its products and its ability to constantly innovate to meet global industrial needs. The "Explorer" brand indicates an improvement in the performance and reliability of their products.

SKF Explorer bearing ensures a quality product, tested to rigorous standards, with global support and innovative technologies.