SL04 5010 PP (SL045010-PP) is a double-row, full-enclosed, double-sided-sealed cylindrical roller bearing, which is widely used in applications such as pulleys, frame structures, lifting and transportation, etc., where medium loads and high sealing requirements are involved.
Inner diameter d = 50 • Outer diameter D = 80 • Width B / Height H = 40 • Retaining groove diameter D1 ≈ 77.5; Groove width C ≈ 2.0 • Mass m ≈ 0.55 kg • Basic rated dynamic load Cr ≈ 93 kN • Basic rated static load C0r ≈ 153 kN • Ultimate rotational speed (grease lubrication) ≈ 1900 r/min
1. Full-load design: No cage, large number of rollers, radial load-bearing capacity is higher than the same specification with cage. 2. Double-row symmetrical arrangement: Capable of withstanding both axial loads and a certain degree of overturning moment. 3. Two-sided contact sealing: Factory pre-lubrication, dust-proof, waterproof, and anti-sea fog. Maintenance cycle is extended by 2-3 times. 4. Long service life: Lifespan is increased by ≥ 50% in salt spray, acid-base, and ultraviolet environments, avoiding rusting under the sealing lip.
Application • Forklift mast and sprocket system: Commonly used in 2–3 ton forklift main rollers with dimensions of 50×80×40 • Track/overhead crane pulley system: As rope pulley bearings, it bears high radial + bidirectional axial forces • Elevator, stacker crane traveling pulley: Requires sealing for maintenance-free operation and low noise • Port, offshore equipment: Used in seawater and salt spray environments, resistant to corrosion • General conveying machinery, cold/hot rolling mill supporting rolls: Utilizing high rigidity and low cross-sectional height advantages
