CAT 3K-2518 Internal Diameter Special Ball Bearing (75 mm)

Product Overview

The CAT 3K-2518 Internal Diameter Special Ball Bearing is a genuine Caterpillar single-row radial ball bearing engineered to reduce friction and support smooth rotational movement in heavy-duty drivetrain and power transmission applications. Designed specifically for Caterpillar equipment, this bearing provides reliable performance under high-speed operation with low radial loads and minimal side thrust.

Manufactured from high-quality alloy steel and built to Caterpillar’s exact specifications, the 3K-2518 bearing ensures long service life, reduced wear, and dependable operation in demanding construction, mining, and industrial environments. As a genuine Cat replacement part, it is precision-engineered to maintain proper fit, alignment, and performance within the original equipment.

Key Features

• Genuine Caterpillar OEM single-row ball bearing
• 75 mm internal (inside) diameter
• Designed for high-speed, low-load applications
• Reduces friction between rotating components
• Precision-manufactured from high-strength alloy steel
• Supports smooth shaft rotation and drivetrain performance
• Engineered for long service life and wear resistance
• Direct OEM replacement for compatible Caterpillar equipment
• Factory-tested to Caterpillar quality and reliability standards
• Helps reduce downtime and maintenance costs

Technical Specifications

Compatible Caterpillar Equipment

The CAT 3K-2518 bearing is used across a wide range of Caterpillar machines, including:

Wheel Loaders

• 966G
• 972G
• 980C
• 980G
• 980G II
• 980H
• 980K
• 986
• 986H
• 986K
• 988
• 988B
• 988F
• 988F II
• 988G
• 988GC
• 988H
• 988K
• 988K XE
• 988 XE
• 990
• 990 II
• 990H
• 990K
• 992C
• 992D
• 992G
• 992K
• 993
• 993K

Compact Wheel Loaders

• 902
• 906
• 906H
• 906H2
• 906K
• 906M
• 907H
• 907H2
• 907K
• 907M
• 908
• 908H
• 908H2
• 908K
• 908M

Wheel Tractor-Scrapers

• 627
• 627B
• 627E
• 627F
• 627G
• 627H
• 627K
• 627K LRC
• 637
• 637B
• 637D
• 637E
• 637G
• 637K
• 639D

Wheel Dozers

• 824C
• 834
• 834B
• 834G
• 834H
• 834K
• 844
• 844H
• 844K
• 854
• 854G
• 854K

Landfill Compactors

• 826C
• 836
• 836G
• 836H
• 836K

Soil Compactors

• 825C

Track Loaders

• 955H
• 977H

Pipelayers

• 578
• 583R
• 589

Articulated Trucks

• D44B
• D550B

Vibratory Compactors

• CS-423E
• CS-433E
• CS-44
• CP-433E
• CP-44

Power Module

• TR43-C18L

Additional Compatibility Information

The CAT 3K-2518 bearing is designed for specific Caterpillar drivetrain and rotating assemblies. Because bearing applications may vary by machine configuration and serial number, compatibility should always be verified using the machine Product Identification Number (PIN) or Serial Number (S/N) before ordering.

Benefits

Installing a genuine CAT 3K-2518 Special Ball Bearing helps:

• Reduce friction and rotational resistance
• Support smooth, efficient drivetrain operation
• Minimize wear on shafts and mating components
• Improve equipment reliability and performance
• Extend bearing and component service life
• Reduce maintenance requirements and downtime
• Ensure OEM fit, quality, and long-term durability