CAT 159-5424 4 Bolt Flange Bearing

CAT 159-5424 is a Caterpillar tapered roller bearing specifically designed for drive/hydraulic systems. It is suitable for core components such as C13/C15 engines, 349D2 excavator slewing gearboxes, and 992K loader gearboxes. It is used to withstand radial and bidirectional axial loads, ensuring rotational accuracy and stable operation under high-speed and heavy-duty conditions. It is often used in conjunction with bearing caps and seals (Cat® Parts). The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 159-5424, single-row tapered roller bearing, material is high carbon chromium bearing steel (GCr15, hardness after quenching HRC60-64, roller surface carburizing treatment, wear-resistant and fatigue-resistant), operating temperature -40℃ to +120℃, single weight approximately 2.8 kg, suitable for high-speed (≤3000 rpm), medium and heavy load (radial rated dynamic load ≥180 kN) conditions, withstands radial + bidirectional axial loads, limits axial movement of shaft system (Cat® Parts)

Key Dimensions
Inner diameter 100 mm (tolerance 0/-0.025 mm), outer diameter 180 mm (tolerance +0.035/0 mm), width 46 mm (tolerance 0/-0.15 mm), number of rollers 16, roller diameter 18 mm, cone angle 12°30′, inner ring fit tolerance k5 (+0.018/+0.002 mm), outer ring fit tolerance J7 (+0.015/-0.010 mm), radial clearance 0.025-0.050 mm, end face runout ≤0.02 mm. Cat® Parts compatible models: Cat C13/C15 engine (crankshaft front/rear end bearing), 349D2 excavator (slewing gearbox output shaft bearing), 992K loader (gearbox input shaft bearing), D11T bulldozer (final drive gearbox bearing), using 1J-0581 bearing cap and 474-9675 O-rings. Cat® Parts rated load: Radial rated dynamic load Cr=185 kN, radial rated static load Cor=250 kN, axial rated dynamic load Ca=85 kN, axial rated static load Coa=120 kN, limiting speed (grease lubrication) 2800 rpm. rpm, (oil lubrication) 3600 rpm Cat® Parts Installation and Maintenance Points: Before installation, clean the inner and outer rings, journal, and bearing housing bore of the bearing. Check for cracks, rust, and roller jamming. Measure dimensions and fit tolerances to ensure compliance. Apply Cat-specific assembly oil to the bearing housing bore for easy cold-press installation.

Use a special press to apply even pressure during installation. Do not strike the end face or rollers to prevent damage to the bearing steel. After installation, adjust the axial clearance to 0.025-0.050 mm. Manually rotate the shaft to ensure there is no jamming or abnormal noise.

Maintenance and Replacement: Check bearing wear, temperature, and vibration every 1500 hours. If radial clearance > 0.15 mm or peeling or cracks appear, replace immediately. It is recommended to replace the bearing simultaneously with the bearing cap and O-ring to ensure support and sealing effectiveness.