312CL Swing Gearbox for CAT 12 Ton Excavators | Heavy-Duty Replacement

Model Number: 312CL
Compatible Machines: CAT 12 ton series excavators
Manufacturer: トンキーの機械 (中国)
Condition: Brand New / Heavy-Duty Aftermarket
Key Features:
- Precision-Machined Gears: Planetary reduction system with tight tolerances ensures vibration-free operation, reducing wear on the excavator’s upper structure.
- Reinforced Housing: Forged alloy steel (20CrMnTi) construction withstands extreme loads and impact, ideal for harsh job site conditions.
- OEM-Spec Fit: Exact dimensions and mounting pattern match CAT’s original design, enabling hassle-free, bolt-on installation with no modifications.
- Advanced Sealing: Multi-layer lip seals and labyrinth gaskets prevent lubricant leakage, extending service intervals and reducing maintenance costs.
- High-Performance Bearings: Tapered roller bearings handle radial and axial loads, ensuring smooth rotation even under heavy swing torque.
Quality & Certification: ISO 9001
Warranty: 18 Months