Product Video
Products Description
|
Brand |
Product Name |
Model |
Part Number |
| Hitachi | Track Roller |
EX3600 |
1021729 |
·1021729 ROLLER LOWER
·For Hitachi EX3500 EX3600-5 EX3600-6 EX3600E-6 EX3600-7-BH EX3600-7-LD
We supply all models of Hitachi excavator track rollers. If you need to know other models, please contact us.
|
Product Name |
Track Roller |
|
Part Number |
1021729 |
|
Origin |
Japan
|
|
Brand Name |
STONE |
|
Model |
EX3600 |
|
Price |
Negotiable |
|
Packing Details |
Standard Export Packing |
|
Delivery Time |
0-30 Days |
|
Payment Term |
L/C, T/T |
|
Price Term |
FOB, CIF, CFR |
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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 |
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After-Sales Service |
Full Support, Online Service |
|
Color |
Customizable |
|
Application |
Excavator
|
|
Customizable |
including customized materials, surface treatment and specifications |
Product related information
Hitachi EX3600 excavator
Specifications:
Engine Power：1,450 kW
Operating Weight
Loading Shovel：362,000 kg
Backhoe：359,000 kg
Track
Track Gauge：5,100 mm
Shoe Size:1,270 mm
Number Of Track Rollers Per Side: 8
Number Of Carrier Rollers Per Side: 3
Number Of Shoes Per Side: 38
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Core Disassembly
Premium Materials
Manufactured from high-grade mining-specific alloy steel co-developed with tier-one steel mills, this EX3600 track roller undergoes a precision full-heat treatment process. By locking the surface hardness within the optimal range of HRC 50-55, our deep hardening technology significantly enhances resistance against chipping and abrasive wear, substantially extending service life in extreme rock conditions.
Reinforced Architecture
Featuring a heavy-duty forged body paired with thickened end covers, the structural design is specifically optimized for the extreme loads of 360-ton class machines. Key connection points are reinforced with anti-loosening bolts, and the integrated architecture effectively prevents body deformation or shaft displacement, ensuring the undercarriage remains as solid as a rock.
Performance Engineering
The track roller is engineered with a streamlined tread profile and optimal width to minimize sliding resistance along the track chain, significantly reducing power loss. It utilizes a high-standard, fully sealed, grease-filled structure that forms a rigorous internal oil film, completely blocking out mining dust and mud to ensure internal bearings operate smoothly.
Maintenance Optimization
Core components like the shaft and bearings incorporate a deep carburizing process, boosting ultimate fatigue strength by over 30%. Equipped with heavy-duty duo-cone seals for top-tier leakage protection, this EX3600 track roller perfectly adapts to centralized lubrication systems. Combined with an easy-replacement design, it can reduce routine maintenance time by nearly 50%.
wear resistance
Wear Resistance Performance Under Different Working Conditions
Hard Rock Conditions
In hard rock mining scenarios such as metal mines and quarries, the EX3600 track roller demonstrates excellent wear resistance.
The ultra-high hardness roller surface and carburized shaft can withstand high-frequency impact and scratches from rocks, while the sealed lubrication system reduces internal friction, ensuring that the track roller maintains stable performance even after long-term exposure to hard rock environments.
Loose Material Handling Conditions
When handling loose materials such as slag and coal, the smooth surface of the track roller reduces the adhesion and friction of materials, preventing material accumulation between the roller and track chain and improving the excavator's travel efficiency.
The wear-resistant steel material also reduces wear caused by the friction of loose materials, extending the service life of the track roller.
Wet and Muddy Working Conditions
For wet and muddy working conditions such as infrastructure pits and wetland mines, the EX3600 track roller is equipped with double protection of seals and anti-corrosion coatings, preventing mud intrusion and component rusting.
The optimized roller clearance can be adjusted appropriately according to the working environment, ensuring that the track roller maintains stable sliding and load-bearing capacity in muddy conditions.
Sealing performance
Precision Duo-Cone Seals
Equipped with high-precision metallic duo-cone seals, the EX3600 track roller ensures a leak-proof interface. The micro-ground sealing surfaces retain oil perfectly, maintaining constant lubrication during high-speed rotation.
Heavy-Duty Contamination Barrier
Designed for harsh mining environments, the multi-stage sealing system acts as a physical barrier. It effectively blocks fine dust and pressurized mud, protecting the internal bearings of the track roller from abrasive damage.
Extreme Temperature Stability
Using advanced synthetic compounds, the seals maintain elasticity from -40°C to 80°C.
This thermal resistance prevents cracking in extreme cold and deformation under high-load heat, ensuring long-term reliability.
Reinforced Polyurethane Shield
In addition to metal seals, secondary heavy-duty polyurethane rings provide high tear resistance. This extra layer shields the EX3600 track roller from physical impact caused by rocks and debris in rugged terrains.
Lifetime Lubrication Chamber
The large-capacity internal oil reservoir, combined with superior sealing, enables "lubricated-for-life" performance. It ensures a continuous oil film on the shaft and bushings, reducing friction and heat buildup.
Dynamic Pressure Balance
The seal structure is optimized for hydrodynamic balance, maintaining a stable seal even during sudden load changes or high-pressure maneuvers. This prevents seal failure caused by internal pressure fluctuations.
Maintenance and operating conditions
Good compatibility, no adaptation issues
Zero-Maintenance Lubrication
The EX3600 track roller features a high-performance "lubricated-for-life" system, effectively eliminating the need for daily manual greasing. By maintaining a constant, sealed internal oil film, it significantly reduces scheduled maintenance intervals and minimizes costly downtime, ensuring your fleet achieves maximum availability and operational efficiency.
Self-Cleaning Surface Design
Engineered with a streamlined profile and a precision-machined surface, this EX3600 track roller is resistant to the buildup of mud, clay, and mineral debris. This anti-adhesion design prevents excessive soil accumulation, which reduces rotational resistance and protects the undercarriage components from unnecessary friction and wear during heavy-duty cycles.
Optimized Track Protection
By providing a perfectly balanced contact surface and synchronized rotation, the EX3600 track roller minimizes peak pressure on the track links and bushings. This optimized stress distribution significantly extends the service life of the entire track group, effectively lowering your overall operating costs and long-term undercarriage investment.
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 this aftermarket track roller be perfectly matched with Hitachi's original track chains?
Yes. The product is manufactured strictly according to the 1:1 OEM size standard. We have specially optimized the tread width and curvature design to ensure even distribution of contact stress with the track links.
This not only guarantees a seamless installation but also prevents abnormal track wear caused by mismatched hardness.
How does the sealing system of this track roller perform in muddy or dusty mining areas?
This EX3600 track roller is equipped with a high-precision double-cone metal seal and heavy-duty polyurethane seal rings.
This "double barrier" system has undergone pressure balance testing and can completely prevent fine slag and high-pressure mud from entering the bearing area, achieving lifetime lubrication-free operation and ensuring smooth operation even in harsh environments.
What kind of reinforcement treatments have been applied to the core wear parts of this product (such as bearings and axles)?
Our axles and bearings all employ a deep carburizing process, which increases their fatigue strength by more than 30%.
This process allows the core components to maintain extremely high wear resistance and tensile strength even under prolonged high-load operation, significantly reducing the risk of premature failure due to internal wear.
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