CAT 1T-0063 67.103mm Outer Diameter Carrier Sleeve

CAT 1T-0063 is a steel locating sleeve specifically designed for Caterpillar engine valve mechanisms. It is used for guiding and positioning the valve lifters and camshafts in engines such as the 3306. The following is raw data and does not include information on replacement parts.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 1T-0063, Type Valve Tappet Positioning Sleeve, Material 4140 Alloy Steel (Heat Treatment), Single Weight 0.1 kg (0.22 lbs), Operating Temperature -40℃ to +180℃, Surface Oxidation Treatment, Hardness HRC 32-38, Rated Life ≥12000 Hours (Standard Operating Conditions), Lubrication Method Pressure Oil Lubrication

Key Dimensions (Metric/Imperial) Inner Diameter 38.10 mm (1.500 in), Outer Diameter 44.45 mm (1.750 in), Length 50.80 mm (2.000 in), Wall Thickness 3.175 mm, Chamfer at Both Ends 1×45°, Coaxiality ≤0.02 mm, Inner Diameter Tolerance H7, Outer Diameter Tolerance g6, Surface Roughness Ra≤0.8 μm

Matching and Performance Parameters Fitting Tappet Outer Diameter 38.10 mm (f7 tolerance), compatible with cylinder block mounting holes 44.45 mm (H7 tolerance), clearance 0.02-0.05 mm, rated radial load ≥85 kN, maximum permissible reciprocating speed ≤1.2 m/s, impact load ≥150 kN (instantaneous)

Structure and Compatibility Characteristics

One-piece steel sleeve: Made of tempered alloy steel, seamless structure, high rigidity, fatigue resistance, suitable for high-frequency reciprocating and vibration conditions in engines, preventing tappet misalignment.

Precision Dimension Control: Inner diameter H7, outer diameter g6 tolerance, ensuring precise positioning of the tappet and cylinder block, reducing valve mechanism wear, and improving valve timing accuracy.

Oxidized Surface Treatment: Surface oxide layer thickness 8-12 μm, rust-proof, suitable for engine oil mist and high-temperature environments, protection rating IP54.

Compatible Models and Application Scenarios

Engine: 3306 series diesel engine. Used for guiding and positioning between valve lifters and camshafts, bearing radial loads during reciprocating motion, ensuring accurate valve opening/closing. Compatible with excavators, loaders, generator sets, and other equipment.

Installation and Maintenance Points (Original Data)

Installation: Clean the sleeve, mounting holes, and lifters, ensuring they are free of metal shavings and oil. Mounting holes should have an H7 tolerance. Press-fit in the cold state. Use a dedicated tool to apply pressure evenly to the end face. Pressing force: 3-5 kN. Ensure coaxiality ≤0.02 mm.

After installation, check the fit clearance. Control it within 0.02-0.05 mm. Ensure the pressure oil passage is unobstructed. Pre-tightening requires no additional torque; fix with an interference fit.

Maintenance: Check the clearance every 2000 hours. Replace immediately if the wear clearance >0.15 mm.

Regularly change the engine oil (API CF-4 and above), maintaining stable oil pressure (200-400 kPa) to prevent dry friction wear.