3G-0910: 101.75mm Minimum ID Steel Bearing Cap

Cat 3G-0910 is Caterpillar’s 101.75mm minimum inner diameter steel bearing cap, commonly used for sealing and positioning engine crankshafts and drivetrain bearing housings. It is compatible with a wide range of heavy-duty engines and construction machinery. Below is core information for Cat® Parts:

Core Parameters
Item Details
Type: Four-hole steel bearing cap, used to fix the outer ring of the bearing and seal the bearing cavity. Suitable for bearing mounting positions with a shaft diameter of 101.75mm and above, providing stable support and sealing protection.

Compatible Models: Compatible with Cat 3406B/C, 3408, 3412 series engines, as well as Cat D8N/D8R bulldozers, 773E/775E mining trucks, 627E scrapers, etc., for crankshaft bearing housings and drivetrain bearing mounting positions.

Material and Process: Material: Carbon steel (Q235), surface anodized black + rust-preventive oil treatment for enhanced corrosion resistance; Structure: One-piece stamping, with four 26mm diameter… Mounting holes for bolt fastening; Accuracy: Inner diameter tolerance ±0.2mm, ensuring compatibility with the bearing outer ring.

Key Dimensions: Minimum inner diameter 101.75mm (4.006 inches), total length 181mm (7.126 inches), total width 72mm (2.835 inches), mounting hole center distance 55mm, thickness 15mm (0.591 inches), weight approx. 1.2kg (2.645 lbs).

Installation Requirements: Install in the pre-drilled mounting position on the bearing housing, fastened with M24 bolts. Clean the mounting surface and bearing outer ring before installation. After installation, check that the bearing cap and bearing fit tightly, without looseness or leakage, ensuring effective bearing lubrication and sealing.

Functions and Suitable Scenarios:
Core Functions: Secures the bearing outer ring, seals the bearing mounting cavity, prevents lubricant leakage and the entry of external dust and debris, provides stable support for the bearing, absorbs vibration and impact during equipment operation, ensures stable bearing operation under heavy load and high vibration conditions, and extends bearing life.

Suitable Scenarios: Used for replacing bearing caps when equipment experiences problems such as bearing cap deformation, cracks, seal failure leading to lubricating oil leakage, and abnormal bearing noise. Suitable for engine overhauls, transmission system maintenance, and other similar conditions.

Performance Characteristics: Made of carbon steel with an anodized black finish, it combines good strength and corrosion resistance, making it suitable for heavy-duty equipment operating conditions in humid and dusty environments.

Impartial stamping construction ensures high structural rigidity, capable of withstanding heavy loads and vibrations. Precise mounting hole positioning guarantees compatibility with bearing housings.

The four-hole symmetrical design ensures secure and reliable installation, facilitating quick disassembly and replacement, and meeting on-site maintenance needs.