CAT 587-9136 180mm Outer Diameter Carrier Planetary Ball Bearing

CAT 587-9136 is a Caterpillar genuine single-row deep groove ball bearing with a planetary carrier, 180 mm outer diameter, suitable for planetary gearbox mechanisms. It supports the planetary carrier, transmits torque, and reduces rotational friction. The following are raw specifications and do not include information on replacement parts (Cat® Parts).

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 587-9136, Type: Single-row deep groove ball bearing (with cage), Material: High carbon chromium bearing steel (GCr15), Weight: 4.2 kg, Operating Temperature: -40℃ to +120℃, Rated Dynamic Load: 280 kN, Rated Static Load: 195 kN, Limiting Speed: 3200 rpm, Coefficient of Friction: ≤0.0015 (oil film condition), Corrosion Resistance: IP65, Service Life: ≥8000 hours, Suitable Radial Load: ≤280 kN, Axial Load: ≤45 kN

Key Dimensions
Inner Diameter: 110 mm (Tolerance H7 +0.030/0 mm), Outer Diameter: 180 mm (Tolerance g6 0/-0.035 mm), Width: 42 mm (Tolerance ±0.15 mm), Rolling Element Diameter: 16 mm, Cage Material: Reinforced Nylon, Bearing Clearance: C3 (0.025-0.055 mm), chamfer 3×45°, coaxiality ≤0.02 mm, radial runout ≤0.03 mm, mounting hole diameter 180 mm (H8 tolerance + 0.054/0 mm)

Compatible Models and Parts: Compatible with the planetary gear mechanism (planetary carrier support position) of the transmission of Cat D8T bulldozers, 966K loaders, and 777G mining trucks. Two pieces per unit (symmetrically installed left and right), compatible with 587-9137 planetary carrier assembly and 587-9138 planetary gear shaft. Compatible with the original factory transmission hydraulic lubrication system.

Performance Parameters: Tensile strength ≥1800 MPa, hardness HRC 60-64 (rolling elements), HRC 58-62 (rings), elastic modulus 207 GPa, linear expansion coefficient 12×10⁻⁶/℃, lubrication method oil bath lubrication, oil film thickness ≥0.02 mm. mm, fatigue life ≥1.2×10⁶ cycles, wear rate ≤0.002 mm/1000 hours

Structural and Performance Advantages
High-carbon chromium bearing steel material: GCr15 provides high hardness and wear resistance, suitable for the high-frequency, high-load working environment of gearboxes, reducing early bearing wear.

Deep groove ball structure design: Can simultaneously withstand radial and bidirectional axial loads, the cage separates the rolling elements, reducing friction and noise, and improving transmission efficiency.

C3 clearance configuration: Adapts to temperature changes during gearbox operation, avoids thermal expansion causing jamming, and ensures flexible rotation of the planetary carrier.

Installation and Maintenance Points (Original Data)

Installation: Clean the journal and bearing housing (free of oil stains and burrs), cold press installation (pressure ≤120 kN), radial runout ≤0.03 mm after installation, maintain clearance within the C3 range, ensure oil hole alignment (deviation ≤0.5 mm), hot installation is prohibited (>80℃ affects bearing steel microstructure). Maintenance: Check bearing temperature every 1000 hours (≤85℃), check oil cleanliness every 1500 hours (NAS Class 10 or below), and check radial clearance every 2000 hours (replace if >0.1 mm). Avoid overload (≤120% of rated load). Use Cat-specific transmission fluid.

Troubleshooting: Abnormal noise is often due to insufficient lubrication or rolling element damage, requiring inspection of the lubrication system or replacement of the bearing; excessive temperature is often due to insufficient clearance, requiring adjustment or replacement; excessive vibration is often due to coaxiality deviation, requiring checking installation accuracy.