131.45.2500 Three Row Roller Slewing Bearing with External Gear

131.45.2500 Three Row Roller Slewing Bearing with External Gear

The 131.45.2500 is a large Three Row Roller Slewing Rings With Ext Toothing bearing with boundary dimensions of 2279 mm × 2721 mm × 231 mm and a net weight of 3000 kg. Its three-row raceway design allows it to independently bear axial and radial loads as well as tilting moments, delivering the strongest load-bearing capacity in a robust and reliable structure. The external gear enables direct drive integration for rotating machinery.

Key features

• Three row cylindrical roller combined slewing bearing with external toothing
• Raceway hardness HRC 55-62 for long service life
• Static radial load rating C0r: 3020 kN
• Static axial load rating C0a: 25800 kN
• Gear: module 18 mm, 154 teeth, gear width 160 mm, addendum circle 2822.4 mm, modification coefficient +0.5
• Cage: plastic or nylon
• Seal: double seal, NBR (Nitrile Butadiene Rubber)
• Rolling element material: GCr15; ring material: 50Mn or 42CrMo
• Precision class: P0, P6, P5
• Operating temperature: -30 °C to 100 °C
• Tangential tooth load: 362000 N (normalizing), 501000 N (quenching); nominal value is 1/2 of max

Mounting and structure dimensions

• D1: 2655 mm
• D2: 2345 mm
• n: 72 mounting holes, Ø 33 mm
• n1: 8 lubricating holes
• H1: 219 mm
• h: 54 mm

Applications

Suitable for heavy rotating parts with ultra-large axial loads, overturning moments and large radial loads, such as tunnel boring machines, port cranes and ladle turrets. The advanced double seal design reduces friction and wear, enhances load-bearing rigidity, and suppresses vibration and noise, significantly extending equipment service life under complex working conditions.