Product Video
Products Description
|
Brand |
Product Name |
Model |
Weight/pc |
Part Number |
|
CATERPILLAR
|
Stick Cylinder |
CAT336D |
446 Kg | 624-1282 |
We supply all models of komatsu excavator track roller. If you need to know other models, please contact us.
|
Product Name |
Stick cylinder |
|
Part Number |
624-1282 |
|
Origin |
Japan
|
|
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 |
Product related information
CAT 336D excavator
Specifications:
Engine Power：200kw
Operating weight (kg)：35020kg
Track:
Track Gauge:2590mm
Shoe Size:600mm
Number Of Track Rollers Per Side:11
Number Of Carrier Rollers Per Side:1
Number Of Shoes Per Side:45
STONE : Product Advantages
 |
 |
Compatible with the following machinery:
| 336 | 34 |
Structural design
High-quality Sealing & Contamination Resistance
Adopting Caterpillar-standard heavy-duty seal kits, it provides dust-proof, impurity-proof and high-pressure-resistant performance, reduces leakage and wear, extends seal service life, and cuts down seal replacement downtime.
Dual-end Buffering Design
Buffering at the stroke ends absorbs impact, reduces noise, protects the cylinder barrel and piston rod, improves operational smoothness, extends the service life of cylinders and connecting rods, and enhances operator comfort.
Integrated Regenerative Circuit
Hydraulic oil regeneration during dipper arm retraction reduces main pump oil supply and pressure loss, shortens cycle time, improves fuel efficiency, and lowers oil temperature and energy consumption.
Highly Adaptable Interfaces & Layout
Standardized interfaces are compatible with a variety of dipper arms and tooling. Maintenance points are easily accessible, facilitating replacement and overhaul, and reducing modification and maintenance costs.
Good performance
Sealing & Buffering
AHigh-quality seals effectively isolate impurities in dusty and muddy conditions. Combined with buffering at both ends, they achieve leakproofing and shock resistance, laying the foundation for heavy-duty durability.
Regenerative Circuit
When the dipper arm retracts, high-pressure oil discharged from the cylinder is diverted back to the rodless chamber. This reduces the main pump flow demand and lowers system heat generation, delivering significant energy savings and efficiency gains especially in continuous loading and short-cycle operations.
Multi-dipper Arm Compatibility
Compatible with dipper arms such as R3.9DB/R3.2DB/R2.8DB. Long dipper arms are ideal for deep excavation and long-reach operations, while short ones enhance digging force and loading efficiency, enabling flexible adaptation to diverse working conditions.
Harsh Environment Resistance
The hard chrome-plated piston rod and thick-walled cylinder design withstand rock abrasion and heavy-load bending, making it suitable for high-wear scenarios like mining operations.
Production process
Material Selection and Preprocessing
Raw Material Inspection: Incoming materials must undergo spectral analysis, metallographic analysis, and tensile testing to ensure compliance with national standards.
Preprocessing: CNC saw/laser cutting blanking → Quenching and tempering (quenching + tempering) → Straightening (deformation ≤ 0.1mm/m).
01
Precision Machining
1. Cylinder Machining Process
Rough boring (deep hole drilling, with 0.5–1mm allowance) → Finish boring (floating boring head, inner diameter tolerance within ±0.02mm) → Honing (diamond honing stones, surface roughness Ra 0.2–0.4μm) → Roller burnishing (forms a work-hardened layer to enhance wear resistance and fatigue strength).
02
Welding and Assembly
Welding Process
MAG/MIG gas metal arc welding or TIG welding is adopted with precision machined grooves. Cylinders and flanges are welded using a circular seam welding machine (welding pressure 8,000–12,000N). Post-weld ultrasonic/X-ray flaw detection is performed to ensure no welding defects.
Assembly Procedure
Prerequisite: Ultrasonic cleaning + high-pressure air cutting of all components; assembly environment cleanliness class ≥ 100,000.
03
Surface Treatment and Finished Product Inspection
Surface Treatment
Cylinder outer surface: Epoxy primer + polyurethane topcoat (thickness 80–120μm).
Finished Product Inspection
Inspection items include: dimensional accuracy measurement with a coordinate measuring machine (CMM), pressure test at 1.5 times the working pressure, leakage test (≤ 0.5mL/min), stroke accuracy test, and visual inspection. All products must pass factory inspection before delivery.
04
Working performance
Energy Efficiency and Fuel Savings
Equipped with stick regeneration circuit technology, it recycles hydraulic oil during operation and directly delivers it to the opposite side of the cylinder. This reduces the oil consumption of the main pump, achieving energy conservation, efficiency improvement, and cycle time reduction. It also enhances fuel efficiency and productivity while lowering operational costs
Heavy-Duty Durability
Constructed from high-strength steel with a box-section structure (with built-in partitions), it features a 170mm large cylinder bore and 1738mm stroke. Delivering a stick digging force of 169kN, it meets the demands of heavy-duty operations such as mine rock excavation and performs excellently under harsh working conditions.
Shock Absorption, Buffering & Noise Reduction
Hydraulic buffers are installed at both ends of the cylinder, effectively absorbing shocks, reducing noise, and minimizing system pressure loss. This design extends the service life of components while improving operational comfort and equipment reliability.
Maintenance
Operation situation
Mine stripping, hard rock excavation, large-scale earthmoving, truck loading, and hydraulic breaker operations.
Selection Suggestion
Choose short dipper arms for heavy-duty and high-force excavation. For hydraulic breaker or grapple operations, confirm that the rated pressure and flow rate of the cylinder and strengthen the maintenance of seals and buffers.
Operation &Maintenance
The overall structure is simple and the maintenance difficulty is low. Ordinary maintenance personnel can perform maintenance operations after simple training.
STONE
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
Performance Parameters & Technical Features?
The stick digging force is 146kN (170mm bore diameter + 1738mm stroke), with a stable 35MPa working pressure. The main pump flow rate of 280L/min ensures operational efficiency. Ranking in the upper-mid level among 36-ton class excavators, it is suitable for heavy-duty operations such as mining and earthmoving. The buffers at both ends reduce noise by 3–5 decibels and extend component service life by over 20%. The stick regeneration circuit saves 5–8% of fuel and shortens cycle time by 10%. The box-section structure with internal partitions delivers high structural strength and strong impact resistance.
Durability & Maintenance?
What is the average service life under heavy-duty conditions, as well as the maintenance cycle and failure rate?
Constructed with high-strength steel and a box-section structure, it has a service life of 8000–10000 hours. The maintenance cycle requires seal inspection every 2000 hours and hydraulic oil/filter replacement every 4000 hours. The most common fault is seal wear, which can be prevented by regular checks of hydraulic oil cleanliness.
Spare Parts & Maintenance, Price & Cost-Effectiveness?
The lead time for spare parts is approximately 15–30 days. Maintenance difficulty and costs depend on the specific condition of the equipment. We will provide you with a reply as soon as possible. Please contact us promptly if you have any needs.
The choice between original and aftermarket parts mainly depends on customer needs. Aftermarket parts are a more suitable option if the budget is limited, and we also provide a one-year warranty for them. Original parts are better suited for customers with strict quality requirements. We will offer corresponding solutions based on customer needs for selection. Regardless of whether you choose original or aftermarket parts, we will provide a warranty of at least one year.
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