338-9366: 214mm Flange Diameter Retaining Collar

The Cat 338-9366 is a Caterpillar steel flanged retaining ring (also known as a suspension system sealing bearing retaining ring) used for sealing and bearing positioning in the front A-frame suspension of articulated trucks. It is suitable for heavy-duty and vibration-prone conditions. Below are the core parameters and application points:

Core Parameters (Precise and Authoritative Version)

Item Details
Basic Information
Model 338-9366, type is a flanged steel retaining ring, suitable for Cat 735/735B/735C/740/740B/740C/740GC/745/745C articulated trucks, used for sealing and bearing positioning in the front A-frame suspension, preventing axial movement of components, and ensuring stable operation of the suspension system.

Compatible Models
Compatible with Cat 735, 735B, 735C, 740, 740B, 740C, 740GC, 745, 745C, etc. articulated trucks, installed in the front A-frame… The sealing and bearing components of the frame suspension are key fasteners of the suspension system.

Material and Manufacturing Process: Made of 45# steel, heat-treated (HB 220-250), with a galvanized passivation surface for corrosion protection. Salt spray test ≥48 hours; flange face flatness ≤0.03mm, threaded hole position accuracy ≤0.1mm, ensuring precise installation and reliable sealing.

Key Dimensions: Flange diameter 214mm (8.425in), sealing face diameter 149.2mm (5.87in), collar height 55.6mm (2.189in), thickness 10mm, 6 bolt holes, hole diameter 12.9mm (0.51in), compatible with M12 or 1/2 inch bolts, bolt hole center circle diameter 180mm, weight approximately 3.8kg, coaxiality after installation ≤0.05mm.

Compatible Components: Compatible with Cat M12×1.75 bolts (torque…) 85-95 N·m), 10-9275 extreme pressure lithium-based grease (apply to the sealing surface before installation), 8T-8730 torque wrench, and matching Cat 358-7876 flange gaskets to ensure a leak-proof seal.

Function, Installation, and Maintenance Points

Core Function: Secures the seals and bearings of the front A-frame suspension, limits axial displacement, withstands heavy loads and frequent vibrations, prevents seal failure and bearing damage, improves suspension system reliability, and is suitable for the harsh operating conditions of articulated trucks.

Installation Points: Clean the flange surface and bolt holes. Align the collar with the mounting position. Tighten the bolts diagonally and evenly to 85-95 N·m. Check coaxiality and flatness to ensure no misalignment. After installation, test suspension oscillation; no sticking or abnormal noise should be detected.

Maintenance points: Check the flange surface for leaks and bolts for looseness every 1000 hours, and replace the seals every 2000 hours; replace the flanges promptly if scratches, deformed collars, or rust appear to avoid suspension system failure.