CAT 116-5312 RING

CAT 116-5312 is a Caterpillar genuine bearing backup ring/thrust washer, commonly used for axial positioning and clearance compensation in hydraulic pumps, gearboxes, or wheel hub bearings. It prevents axial movement of components and protects seals and bearings. The following is core information about Cat®…

Core Technical Parameters

Item Details
Part Model CAT 116-5312 (Bearing Support Ring, also known as Thrust Ring/Locking Ring, metal material, suitable for medium-pressure hydraulic and transmission systems)

Material S45C carbon steel, heat-treated (HB 220-250), surface anodized black, improving wear resistance and rust prevention

Key Dimensions Inner diameter 65 mm, outer diameter 85 mm, thickness 5 mm, chamfer 0.5 mm, center hole coaxiality ≤ 0.02 mm

Single Weight Approx. 0.08 kg (0.1764 lbs)

Operating Parameters Suitable Temperature -40℃ to +150℃, maximum axial load 12 kN, suitable speed ≤ 3000 rpm

Core Features High rigidity, precise positioning, used for bearing axial positioning and clearance compensation, preventing shaft movement, protecting seals and bearings

Structure and Core Functions Heat-treated carbon steel structure: S45C Made of heat-treated carbon steel, balancing strength and toughness, suitable for medium-pressure applications. Surface blackening enhances corrosion resistance and wear resistance.

Precise positioning design: Strict tolerances (±0.01 mm) for inner and outer diameters and thickness ensure axial positioning accuracy of the bearing and control bearing clearance within the design range.

Axial load bearing: Withstands the axial thrust during bearing operation, preventing axial movement of components, reducing vibration and noise, and improving transmission system stability.

Sealing protection: Acts as a support structure for seals, preventing seal deformation and failure under high-pressure conditions, and extending seal life.

Compatible models and application scenarios:
Compatible equipment: Hydraulic main pump, travel gearbox, slewing bearing, etc., in CAT 320D/330D excavators and 966H/972H loaders.

Core application: Used for axial positioning and clearance compensation of hydraulic pump drive shaft bearings, gearbox output shaft bearings, and wheel hub bearings, preventing axial movement of bearings, protecting seals, and suitable for medium-pressure, medium-speed engineering machinery operations.

Installation and Maintenance Points

Installation: Clean the mounting surface and support ring surface, checking for deformation, cracks, or burrs. During installation, ensure the support ring fits snugly against the bearing end face, meeting coaxiality requirements, and avoid uneven loading.

When assembling with bearings and seals, ensure the support ring is parallel to the inner and outer ring end faces of the bearing to avoid deformation caused by assembly stress.

Maintenance: Regularly inspect the support ring for wear, deformation, or surface peeling. If wear exceeds 0.2 mm or deformation occurs, replace it promptly.

Change the lubricating oil according to the equipment maintenance cycle to prevent abnormal wear of the support ring, bearings, and shaft system due to insufficient lubrication.

Avoid overloading and operating the equipment at excessive speeds to prevent damage to the support ring due to excessive axial load or overheating.