CAT 7D-7206 RETAINER

CAT 7D-7206 (7D7206) is a Caterpillar genuine shaft end fixer used to lock shaft end components and limit axial movement. The following is purely precise information (without additional description) for Cat®…:

Core Parameters and Information

Item Details
Part Model: CAT 7D-7206 Shaft End Fixer

Part Type: Shaft end locking fixer used to lock shaft end components such as bearings, gears, and pulleys, bearing axial loads and limiting axial movement

Material: 40Cr alloy structural steel, overall heat treatment, hardness HRC 28-32, blackened surface oxidation, rust-proof and wear-resistant

Key Dimensions: Inner diameter 35.00 mm (1.3780 in), outer diameter 50.00 mm (1.9685 in), thickness 8.00 mm (0.3150 in), locking thread M35×1.5, thread length 10.00 mm, positioning step height 3.00 mm, chamfer 1×45°

Structural Features: Circular ring structure, inner ring with locking thread, outer ring with positioning step, suitable for shaft end nut fitment, used for axial fixation of shaft end components.

Compatible Structures: Gearbox output shaft end retainer, transfer case input shaft end retainer, hydraulic pump drive shaft end retainer, fan pulley shaft end retainer.

Applicable Operating Conditions: Suitable for -40℃ to 120℃, suitable shaft speed ≤5000 rpm, axial load ≤15 kN, suitable for continuous rotation conditions.

Compatible Machines and Assemblies:

Loaders: CAT 950M, 962M (Gearbox output shaft assembly, boom hydraulic pump assembly)

Excavators: CAT 320GC, 323GC (Swing motor shaft end assembly, boom cylinder hydraulic pump assembly)

Road Rollers: CAT CS66B, CS76B (Vibration pump shaft end assembly, steering pump assembly)

Compatible Assembly: CAT 7D-7206 Shaft end retainer assembly, 306-2145 hydraulic pump assembly, 246-5211 engine fan assembly
Installation and Fitting Points: The retainer’s inner diameter should be fitted with the shaft diameter with a clearance of 0.010-0.020 mm to ensure smooth installation.

Tighten the threaded connection to a torque of 85-95 N·m. Apply thread-locking adhesive (Loctite 243) to the thread surface to prevent loosening.

Before installation, clean the retainer’s inner bore and shaft end surface, ensuring they are free of burrs, oil, and rust. Inspect the threads for damage.

After installation, the retainer’s positioning step should fit tightly against the shaft end components, with no axial movement and no jamming during rotation.