Product Video
Products Description
|
Brand |
Product Name |
Model |
Weight/pc |
Part Number |
|
Caterpillar
|
Cat Bucket Cylinder | 349D | 205.63KG |
367-5217 |
We supply all models of komatsu excavator track roller. If you need to know other models, please contact us.
|
Product Name |
CAT BUCKET CYLINDER |
|
Part Number |
367-5217 |
|
Origin |
US
|
|
Brand Name |
STONE |
|
Model |
349D |
|
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 349D excavator
Specifications:
Engine Power:283kw
Operating weight (kg):46,285kg
Track
Track Gauge:2740mm
Shoe Size:750mm
Number Of Track Rollers Per Side:8
Number Of Carrier Rollers Per Side:2
Number Of Shoes Per Side:49
STONE : Product Advantages
![]() |
![]() |
Compatible with the following machinery:
| 345C | 345D |
| 349E | 352F |
Good performance
High Digging Force
Working with the C13 engine and hydraulic system, it delivers strong bucket digging force and improves operating efficiency.
High Durability
Heavy-duty structural design, with forgings and thick plates used in key components to extend service life.


Precise Control
Fast response of the hydraulic system ensure accurate control and smooth movement of the bucket.
Easy Maintenance
Modular design facilitates disassembly and seal replacement, reducing maintenance costs.
Production process for cat Bucket Cylinder
Deep Hole Honing Process
The cat bucket cylinder bore is processed using deep hole boring and honing technology to ensure straightness and surface roughness, reducing resistance and wear during piston movement.
01
Precision Sealing Technology
Multi-stage dust seals, oil seals and buffer rings are adopted to effectively prevent external contamination and hydraulic oil leakage.
02
High-Strength Material Welding
The cylinder body and lugs are made of high-strength steel, welded by automatic submerged arc welding or robotic welding to guarantee weld strength and structural stability.
03
Surface Treatment
The piston rod is hard chrome-plated to improve wear and corrosion resistance, adapting to harsh working conditions.
04
Working performance

Mining
Capable of withstanding high impact loads under heavy-duty digging, ensuring stable operation of the bucket.

Earthworks
Provides fast and powerful bucket movement in earth handling and loading, shortening cycle time.

Foundation Construction
Suitable for trenching, leveling and other precise operations; the cushioning design effectively reduces impact and noise.

Harsh Environments
The sealing system prevents contamination in dusty, muddy conditions and maintains stable performance.
Maintenance
Alignment
Ensure proper alignment of pin holes between the cylinder, bucket and arm during installation to avoid seal wear caused by lateral forces.
Cleanliness & Anti-Contamination
Keep ports clean during disassembly or installation to prevent dust from entering the hydraulic system.
Bleeding
Bleed air from the system after installation to avoid unstable cylinder movement caused by trapped air.
Regular Lubrication
Inject grease into lubrication cups regularly to ensure good lubrication of pins and bushings and reduce wear.
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
Can it withstand heavy-duty mining operations? Load-bearing capacity?
Yes. This Cat bucket cylinder for model 349D is designed for mining & heavy-duty work. We use thickened seamless steel tube for the barrel, strengthened piston rod, and the whole structure is reinforced to the original standard. It has strong resistance to impact and side load, very stable for long-term heavy digging.
What brand of seal kit is adopted? Is it prone to oil leakage?
We use high-quality imported seal kits, with multi-stage dust seal + oil seal + buffer ring. It has excellent dust-proof performance, high temperature resistance and wear resistance. Leakage is not easy to occur under normal use.
Will it cause drifting or internal leakage? How long is the warranty period?
No. The inner bore of the cat bucket cylinder is processed by deep hole honing with high precision and good smoothness. The piston seal fits perfectly with strict internal leakage control, good holding pressure. It will not drift or sink under normal working conditions.
The warranty period varies because different parts have different usage frequencies and wear conditions.
Generally, we provide a warranty ranging from 6 to 12 months. Please rest assured that the quality of our OEM parts is fully guaranteed.
Hot Tags: cat bucket cylinder 3675217 for 349d excavator, China cat bucket cylinder 3675217 for 349d excavator manufacturers, suppliers, factory






