CAT 8H-9585 BEARING

CAT 8H-9585 is a single-row tapered roller bearing (including inner and outer rings and roller assembly) specifically designed for Caterpillar powertrain systems. It is suitable for gearboxes, transfer cases, or differentials operating at low to medium speeds and under medium to heavy loads. The following data is the original specifications and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 8H-9585, Type: Single Row Tapered Roller Bearing (Imperial Series), Material: Chromium-Molybdenum Alloy Steel (GCr15SiMn, Carburized and Quenched), Weight: 0.05 kg (0.1 lbs), Operating Temperature: -40℃ to +150℃, Surface Carburization Depth: 0.6-0.8 mm, Hardness: HRC 60-64, Rated Life: ≥12000 hours (Standard Conditions), Lubrication Method: Grease Lubrication (Recommended: Cat DEO-ULS Grade)

Key Dimensions (Metric/Imperial)
Inner Diameter: 19.05 mm (0.750 in), Outer Diameter: 47.625 mm (1.875 in), Width: 15.875 mm (0.625 in), Number of Rollers: 12, Roller Taper Angle: 12°, Cage Material: Stamped Steel Plate, Chamfer: 1×45°, Inner Diameter Tolerance H7, outer diameter tolerance g6, surface roughness Ra≤0.8 μm
Matching and Performance Parameters: Suitable shaft diameter 19.05 mm (f7 tolerance), suitable mounting hole 47.625 mm (H7 tolerance), radial clearance 0.01-0.03 mm, basic rated dynamic load ≥18 kN, basic rated static load ≥22 kN, maximum permissible speed ≤6000 rpm, rated axial load ≥10 kN, rated radial load ≥15 kN
Structure and Fitting Characteristics:
Cut roller structure: The rollers and raceways have a tapered contact, capable of simultaneously bearing radial and unidirectional axial loads, suitable for the bidirectional positioning requirements of gear shafts in gearboxes, preventing mis-meshing caused by axial movement (Cat®…).

Carburizing and quenching treatment: Carburizing strengthens the inner and outer rings and roller surfaces, resulting in good core toughness and wear-resistant surfaces, suitable for heavy-duty and alternating load conditions, extending bearing service life.

Stamped steel plate retainer: Compact structure, lightweight, suitable for stable operation under medium and low speed conditions, preventing roller tilting or frictional wear.

Suitable Models and Applications
* Tracked bulldozers: Input shaft positioning for transfer case of D7R, D7R II, D8T, etc.
* Pipeline laying machines: Gearbox bearings for power transmission systems of 561M, 561N, PL61, etc.
* Engine accessories: Positioning bearings for auxiliary drive gearboxes of engines such as 3116, 3126B, C6.6, etc.
* Others: Auxiliary transmission systems for graders such as 12E and 16, and mining trucks such as 769, 772, and 773.

Installation and Maintenance Points (Original Data)
* Installation: Clean the bearings, shaft diameter, and mounting holes, ensuring no oil or metal shavings. Press-fit in a cold state. Apply even pressure to the inner ring end face using specialized tooling. Pressing force ≤ 2 kN, ensuring coaxiality ≤ 0.02 mm.

After installation, check the radial clearance and control it within 0.01-0.03 mm to ensure unobstructed lubrication channels and no jamming.

Maintenance: Check the bearing condition every 2000 hours. Ensure the roller surface is free of pitting and the cage is undamaged. Replace immediately if the clearance exceeds 0.05 mm.

Add grease to 1/3-1/2 of the bearing cavity. It is recommended to replenish grease every 1500 hours.