CAT 240-5114 Self Aligning Bearing

CAT 240-5114 is a Caterpillar original single-row thrust ball bearing, suitable for transmissions, hydraulic pumps, transfer cases, and other components subjected to unidirectional axial heavy loads. It is used for precise axial positioning and stable thrust bearing. The following is the information for this original part:

Core Technical Parameters
Item Details
Part Model: CAT 240-5114 (2405114) Single-row thrust ball bearing, weighing approximately 0.68 kg (1.50 lb), composed of a shaft ring, housing ring, steel balls, and a stamped cage. It has no radial load capacity and only bears unidirectional axial loads.

Core Materials: Shaft ring/housing ring (high carbon chromium bearing steel, integrally hardened HRC 60-64); Steel balls (high carbon chromium bearing steel, hardness HRC 62-66); Cage (08Al steel plate stamping, galvanized surface, corrosion resistant)

Key Dimensions: Shaft ring inner diameter 65 mm, housing ring outer diameter 90 mm mm, total bearing height 18 mm, ball diameter 8 mm, cage aperture size 8.2 mm × 8.2 mm, shaft ring/seat ring thickness 8 mm, fillet radius 1 mm

Rated parameters: Rated axial dynamic load 18.5 kN, rated axial static load 52.8 kN, limiting speed (grease lubrication) 3800 rpm, (oil lubrication) 5200 rpm, suitable temperature -40℃ to +120℃

Suitable operating conditions: Axial positioning of gearbox output shaft, thrust support of hydraulic pump plunger end, axial limit of transfer case gears, etc., unidirectional axial heavy load, medium and low speed conditions, cannot withstand radial loads

Suitable models: CAT 320D/323D excavator (hydraulic pump plunger end), 966H/972H loader (gearbox output shaft), 140M grader (transfer case intermediate shaft), 3406E/C15 engine (auxiliary drive end)

Matchings Compatible with shaft retaining rings 5P-7562, bearing housing locating rings 6V-7853, fixing bolts 8T-4127, and grease nipples 1U-8878. Core Functions and Structural Features:

**Unidirectional Thrust Loading:** The thrust ball design is suitable for unidirectional axial heavy loads. The steel balls make point contact with the shaft ring/seat ring, reducing axial friction, ensuring accurate axial positioning of the equipment, and improving transmission stability.

**Precise Positioning:** The shaft ring and shaft, and the seat ring and bearing housing, fit precisely to prevent axial movement, reduce vibration and noise, and are suitable for stable operation under medium and low speed conditions.

**Easy Assembly:** The separate shaft ring and seat ring structure facilitates installation and disassembly without special tools, allowing for quick on-site maintenance and reducing downtime.

**Wear and Corrosion Resistance:** The bearing steel material is hardened, and the cage is galvanized for corrosion resistance, making it suitable for humid and dusty conditions, extending service life and reducing maintenance frequency.