CAT 8I-0795 25.4mm Rod End Bearing

CAT 8I-0795 is a Caterpillar genuine single-row tapered roller bearing (suitable for bogies, transmission systems, etc. in models such as AP500F, used to withstand combined radial and bidirectional axial loads, ensuring smooth operation of transmission components). The following is the original data, without replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model: 8I-0795, Type: Single-row tapered roller bearing (including inner ring/outer ring/rollers/cage), Material: Chromium bearing steel (high carbon chromium steel, GCr15), Weight: 0.78 kg, Operating Temperature: -40℃ to +120℃, Suitable for: Lithium-based grease (NLGI 2), Rated Dynamic Load: ≥95 kN, Rated Static Load: ≥110 kN, Limiting Speed ​​(grease lubrication): ≥3200 rpm, Coefficient of Friction: μ≤0.008, Suitable for: Mineral oil/synthetic gear oil environments

Key Dimensions
Inner Diameter: 40 mm (1.575 in), Outer Diameter: 80 mm (3.150 in), Width: 20 mm (0.787 in), Number of Rollers: 12, Roller Diameter: 8 mm, Roller Length: 14 mm, Inner Ring Large End Diameter: 52 mm, Outer Ring Small End Diameter: 68 mm, Chamfer r1.5 mm, inner diameter tolerance 0/-0.012 mm, outer diameter tolerance 0/-0.018 mm, width tolerance ±0.12 mm, surface roughness Ra 0.3 μm, hardness HRC 60-64, contact angle 15°. Compatible Models and Parts: Compatible with Cat AP500F bogies (position 7, 1 piece per position), also compatible with the transmission systems and differentials of some small loaders and excavators, used to withstand combined radial and axial loads, ensuring stable operation of transmission components.

Performance Parameters: Impact load capacity ≥120 kN, wear resistance ≥8000 hours (normal lubrication), shaft fit accuracy k5, seat fit accuracy H7, grease filling amount 8 cm³, roller surface hardened layer depth 0.6-0.8 mm.

Structural and Performance Advantages: Single-row tapered roller structure: can simultaneously withstand radial and bidirectional axial loads, suitable for working conditions with combined loads in the transmission system, ensuring stable operation of components.

High-carbon chromium steel material: Quenched and tempered, offering a balance of hardness and toughness, excellent fatigue resistance and wear resistance, suitable for complex working conditions in engineering machinery.

Precise contact angle design: A 15° contact angle optimizes load distribution, reduces localized stress concentration, extends bearing life, and lowers maintenance frequency.

Installation and maintenance points (raw data)

Installation: Clean the bearing and shaft/bearing housing. Install using hot mounting (oil temperature ≤100℃) or cold pressing method, pressure ≤60 kN, ensuring flush end faces. After installation, radial runout ≤0.025 mm, shaft surface roughness Ra ≤0.2 μm. Welding or high-temperature heating is prohibited to prevent bearing deformation and material performance degradation.

Maintenance: Replenish grease every 600 hours, with the grease volume being 1/3-1/2 of the bearing volume; check wear every 1800 hours. Normal use is possible when roller end face wear is ≤0.15 mm; replace the bearing if wear exceeds this limit.

Troubleshooting: For abnormal operating noises, check bearing clearance and lubrication; for abnormal temperatures, check installation accuracy and load; for abnormal wear, check seals and cleanliness, and replace relevant parts promptly.