219-1241: 30mm Inside Diameter Single Row Ball Bearing

The Cat 219-1241 is a Caterpillar single-row spherical radial contact ball bearing (with self-lubricating cast iron flange), 30mm inner diameter, suitable for heavy equipment drive/steering systems. Its core function is to absorb vibration, compensate for installation misalignment, and ensure stable operation of rotating components. Key information is as follows:

Core Parameters
Item Details
Type: Single-row spherical radial contact ball bearing (with self-lubricating cast iron flange), steel bearing insert, self-lubricating cast iron flange device, can compensate for installation coaxiality misalignment, suitable for vibration conditions

Compatible Models: Cat 3208, 3306, 3406B engines, suitable for steering, drive, or hydraulic system rotating components of Cat 924G/924GZ loaders, D8N bulldozers, 773E mining trucks, etc., used for support and positioning of rotating shafts.

Material and Manufacturing Process: Outer ring: Cast iron (self-lubricating), Inner ring/rolling elements: Bearing steel (GCr15), surface hardened, hardness… HRC60-64, wear-resistant and impact-resistant; Flange: Cold-rolled steel plate, galvanized and passivated surface, corrosion-resistant.

Key Dimensions: Inner diameter 30mm (1.181 inches), outer diameter 62mm (2.441 inches), width 16mm (0.630 inches), flange diameter 45mm (1.772 inches), flange thickness 5mm (0.197 inches), weight approx. 0.25kg (0.55 lbs).

Installation Requirements: Clean the journal and bearing housing before installation, apply Cat-specific cleaning grease, and use hot or cold fitting processes to avoid bearing deformation. After installation, check the radial clearance (0.015-0.025mm) to ensure rotational flexibility.

Functions and Suitable Scenarios:
Core Functions: Primarily bears radial loads, while also capable of withstanding a small amount of bidirectional axial loads. The self-lubricating flange design reduces maintenance frequency. The spherical contact compensates for installation misalignment between the shaft and bearing housing, absorbs vibration and shock during equipment operation, ensures stable operation of rotating components, and is suitable for shaft support requirements under harsh working conditions in heavy equipment.

Suitable Scenarios: For equipment exhibiting abnormal bearing noise, increased vibration, or abnormal temperature, where inspection reveals bearing wear, ball bearing damage, or flange deformation. Used for bearing replacement, suitable for shaft maintenance needs during intermediate/major overhauls.

Performance Characteristics: Single-row spherical flange design compensates for installation coaxiality deviations, reduces the impact of vibration on bearings, and extends service life.

Self-lubricating cast iron flange reduces lubrication maintenance, suitable for operating conditions where infrequent lubrication is difficult, and lowers maintenance costs.

Bearing steel material with quenching treatment combines high wear resistance and impact resistance, suitable for heavy equipment operating under high loads and high speeds.