CAT 137-4515 58.5mm Thick Spacer

CAT 137-4515 is a genuine Caterpillar steel flat gasket, suitable for the transmission or hydraulic systems of heavy machinery such as excavators and loaders. It is used for sealing, adjusting clearances, and preventing loosening. The following are the original factory specifications and application information; replacement parts are not included.

Core Technical Parameters

Item Details
Part Model: CAT 137-4515 (Steel Flat Washer, No Hole / With Locating Hole)

Material: Base material: Q235 carbon steel, galvanized and passivated surface for corrosion resistance; Hardness HB 130-150, Tensile strength ≥ 370 MPa, Ductility ≥ 26%

Key Dimensions: Outer diameter 65 mm (2.559 in), Inner diameter 45 mm (1.772 in), Thickness 3 mm (0.118 in), Locating hole diameter 6 mm, Quantity 2, Hole spacing 50 mm

Unit Weight: Approx. 0.042 kg (0.093 lbs)

Tolerance Standards: Inner diameter tolerance H8 (+0.039/0 mm), Outer diameter tolerance h8 (0/-0.039 mm), Thickness tolerance ±0.05 mm, Flatness tolerance ≤ 0.02 mm/100 mm

Core Characteristics Resistant to oil and hydraulic media; operating temperature -40℃ to +150℃; compression rebound rate ≥ 15%; suitable for bolt preload of 80-100 N·m; sealing pressure ≤ 10 MPa.

Structure and Core Functions

Sealing and Leak Prevention: Suitable for flanges, end caps, etc., filling microscopic gaps at mating surfaces to prevent oil and hydraulic fluid leakage, meeting the sealing requirements of transmission and hydraulic systems.

Gap Adjustment: Precise thickness tolerances are used to adjust component installation gaps, ensuring transmission accuracy, reducing vibration and noise, and suitable for component positioning under heavy-duty conditions.

Anti-Loosening Protection: Distributes bolt preload to prevent bolt loosening, avoiding component displacement and wear due to vibration, and improving connection reliability.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 320C and 323D excavators, 966H and 972H loaders, and gearbox end caps, hydraulic pump flanges, or drive axle housings of some road machinery.

Core applications: Installed on gearbox output end cover, hydraulic pump and engine connection flange, drive axle bearing housing, etc., for sealing, clearance adjustment and anti-loosening, suitable for heavy-duty and high-vibration operation scenarios of construction machinery, ensuring stable system operation.