CAT 363-7409 BEARING-SUPP

CAT 363-7409 is a Caterpillar genuine bearing support used to secure and position transmission system bearings. It adapts to bearing mounting locations in gearboxes, drive axles, or final drives, providing rigid support and ensuring coaxiality. The following is pure raw data and does not include replacement parts information for Cat®…

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 363-7409, Type: Integrated bearing support housing (cast iron), suitable for single-row tapered roller bearings (e.g., 320-7344) or cylindrical roller bearings, used for gearbox output shaft, drive axle differential end cover, single weight 3.8 kg, operating temperature -40℃ to +120℃, suitable for general lithium-based grease/gear oil, with integrated positioning, support and sealing functions.

Key Dimensions (Metric/Imperial)
Bearing mounting hole diameter 130.0 mm (tolerance H7), bolt hole distribution circle diameter 165.0 mm, number of bolt holes 6, hole diameter 14.0 mm (suitable for M14 bolts), total height 52.0 mm, locating stop diameter 135.0 mm (tolerance f7), wall thickness 12.0 mm, surface roughness of mating surface with bearing outer ring Ra≤1.6 μm, mounting reference surface flatness ≤0.05 mm

Performance Parameters: Material: Gray cast iron HT250, tensile strength ≥250 MPa, hardness HB 190-240, surface coated with anti-rust primer, bearing bore coaxiality ≤0.03 mm, bolt hole position accuracy ≤0.1 mm, capable of withstanding moderate impact and vibration loads, suitable for bearing positioning in transmission systems of Cat 966GC, 323GX, etc.

Structure and Compatibility Characteristics:

Rigid Support Design: One-piece cast iron structure provides rigid positioning of the bearing outer ring, suppressing radial runout and axial movement during operation, ensuring transmission system coaxiality, and reducing bearing contact stress and noise.

Integrated Sealing and Positioning: Features a built-in seal ring mounting groove (compatible with TC skeleton oil seals) to prevent lubricant leakage and dust intrusion; the stop positioning structure ensures the bearing and support are coaxial, eliminating the need for additional coaxiality adjustments after installation.

Ease of Installation: The bolt hole distribution matches the original equipment, allowing for direct replacement and installation. It is suitable for transmission parts with limited space. After installation, the bearing preload is evenly transmitted through the end cap bolts, ensuring bearing operational accuracy.

Installation and Maintenance Points (Original Data)

Installation: Clean the support housing and mounting surface (free of oil and metal shavings). Press the bearing outer ring into the support housing hole (interference fit H7/r6). Install the sealing ring (lip facing the bearing side). Tighten with M14 bolts in a crisscross pattern (torque 35-40 N·m), ensuring a tight fit between the support housing and the machine body without gaps.

Maintenance: Check the sealing condition every 2000 hours. Replace the sealing ring if oil leakage is found. Replace immediately if the support housing shows cracks, deformation, or bearing hole wear (roundness exceeding 0.05 mm). For long-term storage, apply anti-rust oil and seal to prevent corrosion.