As critical components bearing combined radial and axial loads, the installation precision of tapered roller bearings directly impacts equipment service life. This document systematically analyzes core technical points for assembly/disassembly based on ISO 15242 standards.

?I. Installation Process Specifications?

1. ?Preload Control?
   Apply axial preload via torque wrench using formula ?F=0.5×C×d? (C: bearing coefficient, d: shaft diameter). For interference fits, oil bath heating to 80-100℃ is required (open flame heating prohibited) .

2. ?Alignment Calibration?
   Ensure bearing housing and shaft centerline deviation ≤0.02mm/m using laser alignment tools. When tightening locknuts, alternate symmetrical tightening is mandatory .

?II. Professional Disassembly Procedures?

• ?Hydraulic Ejection Method?: Apply uniform oil pressure (≤50MPa) to outer ring, assisted by copper rod light tapping for vibration .

• ?Induction Heating Disassembly?: Control high-frequency heater temperature below 120℃ to avoid tempering effects .

• ?Special Tool Application?: Use three-jaw pullers with soft metal padding to prevent deformation at contact points .

?III. Critical Precautions?

• Prohibit direct hammering on bearing raceways .

• Post-disassembly cleaning with kerosene is essential, including inspection for raceway spalling and cage wear .

• Storage environment humidity must be <60%, vacuum packaging recommended for rust prevention .

?IV. Maintenance Recommendations?

Regularly monitor bearing temperature rise (normal ≤65℃) and abnormal noises. Lithium-based grease replenishment every 2,000 hours is advised (30%-40% cavity volume filling)