Engine Parts 4N-7693 4N7693 Engine Crankshaft for CAT 3306 Excavator Engine

Specification

Description

This product is the 4N-7693 (4N7693) engine crankshaft, a core crankshaft component with OEM specification matching for CAT 3306 excavator diesel engine. It fully complies with the original installation dimensions, interface standards and piston & connecting rod matching parameters of the 3306 engine. It can directly replace the original worn crankshaft, perfectly fit the 3306 power assembly, and serve as the essential precision part for engine overhaul, complete machine refurbishment and fault repair.

Advantage

1.Perfect OEM Matching
1:1 replicates all original part parameters of 4N-7693, including mounting holes, main journal and connecting rod journal sizes. No modification or polishing required, supports direct non-damage installation and replacement.
2.High-strength Forged Material
Made of premium alloy steel with integral forging process, combined with quenching & tempering heat treatment and carburizing quenching precision machining. It features higher structural rigidity and deformation resistance than ordinary cast iron crankshafts.
3.Precision Machining Technology
Main journals and connecting rod journals are processed by high-precision grinding & polishing, with excellent surface finish. Dynamic balance precision is strictly calibrated to ensure smooth operation without jitter or abnormal noise.
4.Wear-resistant & Corrosion-resistant Durability
Journal surface adopts enhanced anti-wear treatment, with outstanding performance against high-temperature wear, oil corrosion and fatigue fracture, greatly extending service life.
5.Reliable Loading Quality
Full factory inspections including pressure resistance, fatigue resistance and dynamic balance are completed before delivery. It delivers stable loading performance and adapts to heavy-load, harsh construction site working conditions of excavators.

Performance

• Stably withstands high-speed, high-torque reciprocating impact loads of the engine. Resists bending deformation and fracture under long-term heavy-load working conditions.
• Excellent journal wear resistance maintains stable running clearance for a long time, effectively reducing engine faults such as abnormal oil consumption, bearing wear, abnormal noise and jitter.
• Meets standard dynamic balance precision, ensures smooth operation, reduces engine vibration and noise, and improves fuel economy & power output smoothness.
• Stable high-temperature and high-pressure resistance adapts to the high-temperature high-pressure working environment of diesel engines. Slow performance degradation during long-time operation and longer overhaul cycle.

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