119-5727: Bearing – Ball(Debris Resistant)

CAT 119-5727 is a Caterpillar single-row deep groove ball bearing (with cage), suitable for transmission and hydraulic components of loaders, excavators, and other equipment. It primarily bears radial loads, allowing for a small amount of axial movement. Key information is as follows:

Core Parameters
Item Details
Type: Single-row deep groove ball bearing with stamped steel cage, suitable for medium-low speed and medium-low load conditions, capable of withstanding radial loads and a small amount of bidirectional axial loads, ensuring smooth operation of components.
Dimensions (Metric/Imperial): Inner diameter 70mm (2.756 inches), outer diameter 125mm (4.921 inches), width 24mm (0.945 inches), weight approx. 1.2kg (2.65 lbs)

Materials: Inner ring/outer ring: SAE 52100 high-carbon chromium bearing steel, integrally hardened, hardness HRC60-64; Balls: same material, ultra-fine ground; Cage: SPCC stamped steel, rust-proof coating

Accuracy: Radial clearance 0.018-0.038mm, inner diameter roundness ≤0.002mm, surface roughness Ra≤0.4μm, suitable for general transmission accuracy requirements.

Lubrication Compatibility: Compatible with lithium-based grease/industrial gear oil, operating temperature -30℃ to 110℃, maximum speed 4200rpm.

Suitable Scenarios: Suitable for the gearbox secondary shaft, drive axle differential, hydraulic pump drive shaft, etc. of Cat 525/525B/525C loaders, 814F/815F/816F road rollers, and 966H/972H loaders. It is used to bear radial loads, allowing for slight axial displacement of the shaft system, and is suitable for low-to-medium speed and low-to-medium impact conditions.

Suitable for replacing bearings during equipment overhauls when abnormal noises and vibrations are caused by steel ball wear, raceway pitting, cage deformation, or lubrication failure, ensuring stable operation of the transmission and hydraulic systems.

Performance Characteristics: The deep groove ball bearing structure can simultaneously withstand radial loads and a small amount of bidirectional axial loads, adapting to various transmission requirements and offering convenient installation and maintenance.

Made of high-carbon chromium bearing steel, it boasts excellent wear resistance and fatigue resistance, suitable for long-term stable operation under medium- and low-speed conditions, extending component lifespan.

The stamped steel cage design is lightweight yet strong, effectively guiding the steel balls, reducing friction and noise, and improving transmission efficiency.