Product Video
Specification
|
Brand |
Product Name |
Model |
Weight/pc |
Part Number |
|
CATERPILLAR
|
Slewing Ring Gear |
CAT336D |
690.4KG | 2276089 |
We supply all models of Caterpillar excavator Slewing Ring Gear. If you need to know other models, please contact us.
|
Product Name |
Slewing Ring Gear |
|
Part Number |
2276089 |
|
Origin |
United States |
|
Brand Name |
STONE |
|
Model |
336D |
|
Price |
Negotiable |
|
Packing Details |
Standard Export Packing |
|
Delivery Time |
0-30 Days |
|
Payment Term |
L/C, T/T |
|
Price Term |
FOB, CIF, CFR |
|
Supply Capacity |
50,000 PCS/Month |
|
Minimum Order Quantity |
1 PC |
|
Material |
High Quality Steel |
|
Technology |
Precision Machining |
|
Surface |
Treatment Anti-Corrosion Coating |
|
Hardness |
HRC 48-52 |
|
Quality |
Original Factory Standard |
|
After-Sales Service |
Full Support, Online Service |
|
Color |
Customizable |
|
Application |
Excavator
|
|
Customizable |
including customized materials, surface treatment and specifications |
Products Description
Material advantages
Rugged and High Load Capacity
Built with high-strength materials and optimized structure, it easily handles the immense forces generated during heavy-duty excavation and slope operations. Specially treated internally, it offers excellent impact resistance, withstanding the shocks from rock digging and blasting vibrations.
Reliable Sealing and Environmental Adaptability
Equipped with a multi-layered composite sealing system, it effectively blocks dust, mud, and moisture ingress, ensuring reliable performance in dusty, wet, or freezing conditions. Key areas feature rust and corrosion protection, extending service life even in coastal or chemically aggressive environments.
Smooth Operation and Energy Efficiency
High manufacturing precision ensures exceptionally smooth and steady rotation, enabling precise control for fine grading and loading work. The dedicated lubrication design maintains optimal friction reduction, which lowers swing resistance and contributes to lower overall machine energy consumption.
Easy Maintenance, Long Service Life
Its superior sealing and long-lasting lubrication design significantly extend maintenance intervals, reducing downtime and maintenance costs. The slewing ring gear is equipped with convenient check and grease ports, making routine servicing quick and straightforward.
Production process
High-Quality Material Preparation and Forging
Rings are made from 50Mn steel, while rolling elements use bearing steel grades like GCr15. All raw materials undergo rigorous physical and chemical property testing. Through forging at temperatures above 1000°C, the internal metallographic structure of the steel is refined, making it more uniform and dense, laying a solid foundation for further processing.
01
Precision Machining and Heat Treatment Strengthening
The forgings undergo rough and finish turning to achieve precise dimensions and shape. Subsequently, quenching heat treatment is carried out at 820°C-860°C, forming a high-hardness martensitic structure on the part surface, with an overall hardness reaching HRC 58-62. This process provides the slewing ring gear with exceptional wear resistance and fatigue strength.
02
Precision Machining of Critical Functional Surfaces
Key load-bearing and power transmission surfaces undergo fine machining. High-precision equipment, such as milling machines and gear shaping machines, is used to finish the raceways and gear teeth. This ensures that dimensional accuracy, surface finish, and gear quality (up to Grade 7-10) meet the stringent requirements for smooth operation and precise power transmission.
03
Precision Assembly and Comprehensive Testing
All qualified components (rings, rolling elements, cages, seals, etc.) are assembled in sequence within a clean environment. After assembly, comprehensive final testing is conducted. Critical parameters such as axial and radial clearance, as well as face and radial runout, are strictly measured to guarantee the finished product fully meets all design performance standards.
04
Working performance
Reliable Starting and Operation in Extreme Cold
Specialized low-temperature grease and verified materials ensure that the grease inside the bearing does not solidify at extremely low temperatures, and effective lubrication is maintained at the gear mesh points. This supports cold starts of the equipment, reduces startup wear, and ensures smooth rotation.
Robust Sealing Protection
A multi-layer sealing system effectively defends against the intrusion of wind-blown snow, ice water, mud, sand, and dust. It prevents internal lubrication from contamination or leakage and stops external moisture from freezing, which could damage seals or cause seizing. This protects the core components, keeping them clean in dirty environments.
Structural and Material Weather Resistance
The high-strength alloy steel and special treatment processes used for the slewing ring gear enable them to withstand structural stress caused by drastic temperature fluctuations. They also resist erosion from dampness and corrosive agents (e.g., de-icing salts). This maintains the structural integrity and load-bearing capacity of the entire unit under harsh working conditions, extending its service life.
Easy to maintain
Superior Sealing, Reduced Maintenance
The multi-layered sealing system effectively keeps out dust and water, significantly extending lubrication intervals and reducing the frequency of required maintenance.
Easy Relubrication, Simple Operation
Designed with accessible grease nipples and efficient lubrication channels, making routine grease replenishment quick and straightforward.
Robust Construction, High Reliability
The slewing ring gear features a high-hardness, wear-resistant design with excellent impact resistance. It resists sudden failure and ensures easier maintenance.
STONE：Construction machinery parts expert in China
Stone is a leading supplier of engineering machinery parts, focusing on providing high-quality parts for mining companies. Since its establishment in 2004, we have been based in Shanghai, China, and have built our own brand STONE, becoming a trusted choice in the industry. We are committed to providing a variety of parts including bulldozers, excavators and wheel loaders for well-known brands such as Caterpillar and Komatsu. Our product line covers a full range of OEM parts, such as Track Chain, Track Rollers, Sprocket, Excavator Buckets, Blades, Excavator Cylinders, Swing Circles, and various electrical and hydraulic components to ensure that our customers' stringent requirements for quality and performance are met.
quality
years experience
service
hours warrant
Q＆A
What is the maintenance interval for the slewing ring gear? Does it require frequent greasing?
Thanks to its multi-layer composite sealing system and specialized long-life grease, the maintenance interval for this slewing bearing is significantly longer than common standards. Under normal operating conditions, the relubrication period typically reaches 500 to 2,000 operating hours (please refer to the specific operation manual), greatly reducing maintenance frequency. Routine inspection and replenishment are very convenient via the accessible grease fittings, making upkeep straightforward.
Is this slewing ring prone to failure in dusty or rainy mining environments?
No, it is not. It is highly resistant to failure. Its all-weather sealing design is specifically engineered for such harsh conditions. The multiple seals effectively block the intrusion of dust, mud, and moisture, preventing internal wear and corrosion. Furthermore, critical components receive special anti-corrosion treatment, ensuring long-term reliable performance in damp, dusty, or coastal environments.
What are the common causes if rotation becomes uneven or abnormal noise occurs?
1. Insufficient or Contaminated Lubrication: First, check and ensure the grease is adequate and not deteriorated. While our sealing system greatly reduces contamination, regular checks are still necessary under extreme operating conditions.
2. Ingress of Foreign Debris: Inspect the seals for integrity. Damage to seals can allow foreign particles to enter the raceway.
3. Abnormal Loading or Installation Issues: Long-term overloading or improper installation (e.g., an uneven mounting surface) may cause internal damage.
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