Description
CAT 4J-2414 Frame Trunnion
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The CAT 4J-2414 is a Caterpillar genuine spherical trunnion used in the hinge joints of excavators, loaders, and other equipment. It provides hinge support and oscillation functionality. The following are the precise original part information:
Core Technical Parameters
Item Details
Part Model: CAT 4J-2414 (4J2414) spherical trunnion, weighing approximately 1.2 kg (2.65 lb), featuring an integral spherical structure, suitable for oscillation and positioning at the hinge joints of equipment working devices.
Core Material: Ductile iron (QT600-3), overall tempered hardness HB 220-250, spherical surface high-frequency quenching treatment, surface hardness HRC 50-55, spherical chrome plating thickness 0.05-0.08 mm, wear and corrosion resistant.
Key Dimensions: Spherical diameter 76.5 mm (3.01 in), cylindrical shaft outer diameter 44.45 mm (1.75 in), total length 160 mm. 6.30 in, mounting journal diameter 38 mm, length 50 mm, M16×1.5 threads at both ends, for fixing nut installation.
Suitable for: Swinging and positioning at the hinge of the equipment’s working device; suitable for impact, vibration, and heavy-load conditions; used to connect the boom and stick, rocker arm and connecting rod, etc., bearing radial loads and swing functions.
Compatible Models: CAT 320D/323D excavators (boom-stick hinge), 966H/972H loaders (rocker arm-connecting rod hinge), 140M graders (blade-bump hinge), 3406E/C15 engine set hydraulic mechanism hinge.
Accessories: Compatible bushing 151-7490, lock nut 6V-7854, locking washer 8T-4128, grease nipple. 1U-8878 Core Functions and Structural Features
Flexible Hinge: The overall spherical design accommodates multi-angle swing, reducing frictional resistance at the hinge, ensuring smooth operation of the working device, and improving operational accuracy.
High Load Capacity: Ductile iron material with spherical hardening treatment is suitable for heavy-duty and impact conditions, reducing deformation and wear, and extending service life.
Precise Positioning: The cylindrical shaft and mounting holes mate to ensure hinge coaxiality, preventing misalignment during swing, reducing vibration and noise, and improving equipment stability.
Wear and Corrosion Resistance: The spherical chrome-plated treatment is suitable for humid and dusty conditions, reducing rust and wear, lowering maintenance frequency, and making it suitable for long-term outdoor operation.
Easy Installation: The integral structure with threaded ends, combined with nuts and locking washers, allows for quick fixing without special tools, facilitating rapid on-site assembly.
