Description
CAT 535-6330 BUSHING-SEM
| CAT 535-6330 BUSHING-SEM |
| CAT 453-2348 SLEEVE |
| CAT 314-8728 TRUNNION-GD |
| CAT 115-1422 BEARING |
| CAT 362-3502 BUSHING |
| CAT 539-2442 BEARING-NEED |
| CAT 2W-8060 PLUG A |
| CAT 9T-3876 55mm Inner Diameter Tapered Roller Bearing |
The CAT 535-6330 SEM bushing is a Caterpillar original equipment manufacturer (OEM) pin bushing customized for SEM loaders, graders, and other equipment. It is designed for use with booms, rocker arms, and frame hinge points to reduce friction between the pin and the support, absorb shock, and ensure smooth operation and structural stability of the hinged parts.
Core Technical Parameters
Item Details
Part Model: CAT 535-6330 SEM Bushing (Single Component, Not an Assembly)
Material: Alloy steel (surface hardened + nitrided, HRC 58-62), suitable for heavy-duty and dusty conditions; some specifications have a self-lubricating coating.
Key Dimensions: Inner diameter approx. 50-70mm, outer diameter approx. 80-100mm, length approx. 60-90mm (subject to actual product/manual); precise tolerances ensure compatibility with pins and supports.
Compatible Models: SEM 655D/656D loaders, 919/922 graders, and Caterpillar models compatible with SEM platforms; used for hinge pins in booms, rocker arms, steering tie rods, etc.
Performance Characteristics High hardness and wear resistance, low coefficient of friction, suitable for high-frequency oscillation and impact loads, precisely matching articulated parts, preventing wear and looseness between pins and supports.
Core Functions:
Friction and Wear Control: Isolates the metal-to-metal contact between the pin and support, significantly reducing the coefficient of friction, minimizing wear at the articulated parts, and extending the life of the pin and support.
Impact Absorption and Vibration Attenuation: Absorbs impact loads from boom lifting, steering, and other operating conditions, attenuating vibrations, reducing structural stress concentration, and protecting the frame and working device.
Clearance Compensation and Positioning: Compensates for the assembly clearance between the pin and support, ensuring the movement accuracy of the articulated parts and preventing abnormal noises and component misalignment caused by looseness.
Protective Function: Prevents dust and moisture from entering the articulated clearance, reducing the risk of corrosion and jamming, suitable for harsh working conditions.
Installation and Maintenance Points:
Installation Specifications: Clean the pin, support mounting holes, and bushings, removing oil, rust, and impurities. Check the pin and holes for scratches and ensure they are within acceptable ovality limits.
Use cold-pressing technology and specialized tooling for installation; do not strike the bushing body. After installation, check coaxiality (≤0.05mm) to ensure there is no misalignment.
Tighten the pins/bolts according to the torque requirements in the equipment manual. After installation, apply the specified grease (such as lithium-based grease) to ensure adequate lubrication of the hinge joint.
Maintenance Recommendations: Check every 500-800 working hours for: bushing wear and cracks; check for looseness and abnormal noise at the hinge joint.
If bushing wear exceeds the limit (radial clearance >0.8mm) or deformation is found, replace it immediately to avoid secondary damage to critical components such as pins and supports.
