China OEM OEM High Quality Hydraulic Cylinders for Excavator Construction Machinery vacuum pump engine

Product Description

Basic Info.    

 

Model No.  Komatsu EJ6895/G Cylinder Type Komatsu Type
 
Material   
  Alloy Steel  structure Komatsu Type
Warranty  Ususally 1 year Application Mining ,Building ,Machinery 
Part No.      EJ6895/G Product Name Komatsu front suspension ASSY/830W dump truck
Core Components  Seal Transport Plywooden Case
Work Pressure 16-30Mpa Place of China ZheJiang ,China
Specification      Aftermarket Trademark ROCA
Origin China HS Code 8412210000
Prodcution Capacity  10000/month    

   
      
 

Product Description

Product Information

Komatsu Mining Haul Truck EM8840/G Cylinder Rear Suspension ASSY/830E 

Working temperature -40°C ~ 80°C
Color RAL9005,Customize
Material CK45,ST52,ST52-3,27SiMn,Customize
Seal kit Trelleborg, Halite, Chesterton, NOK, Kayaba
Piston rod Hard chromed
Packaging Plywood case
Warranty 12 months
Payment T/T

 

Part NO. Name of Commodity & Specification Model Measurement(CMS) Volume Net Weight(kg) Gross WT (kg)
Length Width Height Unit Total Unit Total
EJ6895/G Front Suspension ASSY/830E Dump Truck 830E  200.00  105.00  112.00  2.35 2348.00  2348.00  2516.00  2516.00 

Popular Cylinder Type and Part No. for Mining Haul Truck
 

Item
No.
Part NO.

Name of Commodity & Specification

Model
1 EJ6895/G Front Suspension ASSY/830E Dump Truck 830E
2 EM8840/G Rear Suspension ASSY/830E Dump Truck
3 EM8354/G Hoist Cylinder ASSY/830E Dump Truck
4 EL7952/G Steering Cylinder ASSY/830E Dump Truck
5 9T2869/G Blade Hoist Cylinder  D10T
6 2320652/G Blade Tilt Cylinder LH
7 2320653/G Blade Tilt Cylinder RH
8 19926445/G Ripper Lift Cylinder RH
9 19926446/G Ripper Lift Cylinder LH
10 4T9977/G Ripper Tilt Cylinder 
11 252571/G Blade Hoist Cylinder D11T
12 3672259 /G Blade Tilt Cylinder LH
13 3672258 /G Blade Tilt Cylinder RH
14 1616616/G Ripper Lift Cylinder LH
15 1616615/G Ripper Lift Cylinder RH
16 1306381/G Ripper Lift Cylinder LH
17 1303263/G Ripper Lift Cylinder RH

Advantage

Better designs, better material, better value.
ROCA hydraulic cylinders are designed with rugged features to give unequaled service life and performance.
 
Mining equipment is continually subjected to torturous conditions that punish hydraulic cylinders. These difficult conditions include dust, grit, heat, cold, and moisture. Besides, the equipment is subject to slamming loads and mechanical impacts.
 
ROCA designs and manufactures excavators, dumper trucks, and heavy-duty hydraulic cylinders that endure these very difficult conditions. 

Company Information

HangZhou CHINAMFG is a comprehensive manufacturing enterprise engaged in hydraulic cylinders, excavator attachment, metal casting, hydraulic components with certification approval to meet custom or OEM requirements.
 
ROCA owned factory offers customers effective-cost products with quality assurance. With its professional and experienced R&D team, CHINAMFG Hydraulic devotes itself to research and development to optimize products applied in construction, mining, waste management, forestry, agriculture, etc.
 

 

Products

 

Hydraulic cylinders are used for construction machinery, like excavator, with the brand Volvo, Komatsu, Doosan, etc . It used as boom cylinder, stick cylinder, bucket cylinder, arm cylinder.

 

Nowadays hydraulic cylinders play an essential role in daily application and industry:
√ Mining
√ Earthmoving & Construction
√ Agriculture &Forestry
√Waste Management & Material Handing
√Ship crane & offshore

 

Selecting the right cylinders for an application is critical in obtaining maximum performance and reliability.

 

ROCA provide first-class hydraulic cylinder, which used for mining, dump truck, construment
equipment.

 

Together, we work out the best design solution for your application.

FAQ

What is the Warranty Period?
Generally 12 months from the date of bill of lading. For some special machines, the warranty can be prolonged after mutual agreement.
Which Payment Terms Can you Accept?
1,L/C+T/T
2,L/C+D/P
How Is Your Delivery Time?
It depends on the type of machine. In the general circumstance, it will take more than from 30days to 90days to finish production. But we always will try our best to advance the delivery. If material is in handy, the production time will also be shortened accordingly.
How Soon Can You Respond to Client’s Inquiry?
As soon as we saw it, no more than 12hours.

 

Certification: GS, RoHS, CE, ISO9001
Pressure: High Pressure
Work Temperature: Low Temperature
Customization:
Available

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Payment Method:







 

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Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

hydraulic cylinder

How do hydraulic cylinders handle variations in temperature and harsh operating environments?

Hydraulic cylinders are designed to handle variations in temperature and harsh operating environments by incorporating specific features and materials that ensure their durability, reliability, and performance. The ability of hydraulic cylinders to withstand extreme temperatures, corrosive environments, and other harsh conditions is crucial for their successful operation in a wide range of applications. Here’s a detailed explanation of how hydraulic cylinders handle variations in temperature and harsh operating environments:

1. Temperature Range:

– Hydraulic cylinders are designed to operate within a specified temperature range. The materials used in their construction, such as cylinder barrels, pistons, seals, and lubricants, are selected to withstand the anticipated temperature variations. Specialized seals and O-rings made from materials like nitrile, Viton, or polyurethane are used to maintain their sealing properties over a wide temperature range. Heat-resistant coatings or thermal insulation may be applied to certain components to protect them from high temperatures.

2. Thermal Expansion:

– Hydraulic cylinders are designed to accommodate thermal expansion and contraction that occurs with temperature changes. The materials used in their construction have different coefficients of thermal expansion, allowing the cylinder components to expand or contract at a similar rate. This design consideration prevents excessive stress, binding, or leakage that could result from thermal expansion or contraction.

3. Heat Dissipation:

– In applications where hydraulic cylinders are subjected to high temperatures, heat dissipation mechanisms are employed to prevent overheating. Cooling fins or heat sinks may be incorporated into the cylinder design to increase the surface area for heat transfer. In some cases, external cooling methods such as air or liquid cooling systems can be used to maintain optimal operating temperatures.

4. Corrosion Resistance:

– Hydraulic cylinders used in harsh operating environments are constructed from materials that exhibit excellent corrosion resistance. Stainless steel, chrome-plated steel, or other corrosion-resistant alloys are commonly used for cylinder components exposed to corrosive substances or environments. Additionally, surface treatments such as coatings, plating, or specialized paints can provide an extra layer of protection against corrosion.

5. Sealing Systems:

– Hydraulic cylinders employ sealing systems that are specifically designed to withstand harsh operating environments. The seals used in hydraulic cylinders are selected based on their resistance to temperature extremes, chemicals, abrasion, and other environmental factors. Specialized seal designs, such as wiper seals, rod seals, or high-temperature seals, are utilized to maintain effective sealing and prevent contamination of the hydraulic fluid.

6. Lubrication:

– Proper lubrication is essential for the smooth operation and longevity of hydraulic cylinders, particularly in harsh operating environments. Lubricants are selected based on their ability to withstand high temperatures, resist oxidation, and provide effective lubrication under extreme conditions. Regular maintenance and lubrication practices ensure that the cylinder components continue to operate smoothly and reduce the effects of wear and friction.

7. Robust Construction:

– Hydraulic cylinders designed for harsh operating environments are built with robust construction techniques to withstand the rigors of such conditions. The cylinder barrels, rods, and other components are manufactured to meet strict quality and durability standards. Welded or bolted construction methods are employed to ensure the structural integrity of the cylinders. Reinforcements, such as flanges or tie rods, may be added to enhance the cylinder’s strength and resistance to external forces.

8. Environmental Protection:

– Hydraulic cylinders can be equipped with additional protective features to shield them from harsh operating environments. Protective covers, boots, or bellows can be used to prevent contaminants, debris, or moisture from entering the cylinder and compromising its performance. These protective measures help extend the service life of hydraulic cylinders in demanding conditions.

9. Compliance with Standards:

– Hydraulic cylinders manufactured for specific industries or applications often comply with industry standards or regulations related to operating temperature ranges, environmental conditions, or safety requirements. Compliance with these standards ensures that hydraulic cylinders are designed and tested to meet the specific demands of their intended operating environments.

In summary, hydraulic cylinders are designed to handle variations in temperature and harsh operating environments by incorporating suitable materials, thermal expansion considerations, heat dissipation mechanisms, corrosion-resistant components, specialized sealing systems, proper lubrication, robust construction techniques, protective features, and compliance with industry standards. These design considerations and features enable hydraulic cylinders to operate reliably and effectively in a wide range of demanding applications and environmental conditions.

hydraulic cylinder

Ensuring Controlled and Safe Force Application in Heavy Machinery with Hydraulic Cylinders

Hydraulic cylinders play a critical role in heavy machinery by ensuring controlled and safe force application. The ability to exert and control high forces is essential for heavy machinery operations, such as lifting, pressing, pushing, or pulling heavy loads. Let’s explore how hydraulic cylinders ensure controlled and safe force application in heavy machinery:

  1. Force Control: Hydraulic cylinders provide precise force control capabilities. The hydraulic system’s pressure can be adjusted to regulate the force exerted by the cylinder. This control allows operators to apply the necessary force for a specific task while ensuring it remains within safe limits. By accurately controlling the force, hydraulic cylinders help prevent excessive force that could damage the machinery or compromise the safety of the operation.
  2. Load Balancing: In heavy machinery, multiple hydraulic cylinders are often used in conjunction to distribute and balance the applied force. By using multiple cylinders, the load can be evenly distributed across the machinery, minimizing stress concentrations and ensuring controlled force application. This load balancing approach enhances the stability and safety of the machinery, preventing uneven loading that could lead to structural issues or instability.
  3. Safety Valves: Hydraulic systems in heavy machinery are equipped with safety valves to protect against excessive force or overloading. Safety valves are designed to release hydraulic fluid from the cylinder when the force exceeds a predetermined threshold. This prevents the force from reaching dangerous levels, safeguarding the machinery and preventing potential accidents or damage. Safety valves provide an additional layer of safety and ensure controlled force application even in unexpected circumstances.
  4. Pressure Relief Systems: Hydraulic cylinders incorporate pressure relief systems to further enhance safety. These systems are designed to relieve excess pressure in the hydraulic system, which could occur due to factors such as thermal expansion or system malfunctions. By relieving excess pressure, the pressure relief systems prevent sudden and uncontrolled force surges, maintaining safe and controlled force application in heavy machinery.
  5. Structural Integrity: Hydraulic cylinders are designed to withstand the high forces and loads associated with heavy machinery applications. The cylinders are constructed using robust materials, such as high-strength steel, and undergo rigorous testing to ensure their structural integrity. This ensures that the cylinders can safely handle the forces applied during heavy machinery operations without experiencing failures or deformations that could compromise the safety and controlled force application.

In summary, hydraulic cylinders ensure controlled and safe force application in heavy machinery through force control, load balancing, safety valves, pressure relief systems, and robust structural design. These features and design considerations enable operators to exert the necessary force while maintaining safety and preventing excessive loads or force surges. By incorporating hydraulic cylinders into heavy machinery, manufacturers can achieve controlled force application, enhance operational safety, and protect the machinery from damage or failure.

hydraulic cylinder

What is a hydraulic cylinder and how does it function in various applications?

A hydraulic cylinder is a mechanical actuator that converts hydraulic energy into linear force and motion. It plays a critical role in various applications where controlled and powerful linear motion is required. Hydraulic cylinders are commonly used in industries such as construction, manufacturing, agriculture, and transportation. Here’s a detailed explanation of what a hydraulic cylinder is and how it functions:

Definition and Components:

– A hydraulic cylinder consists of a cylindrical barrel, a piston, a piston rod, and various seals. The barrel is a hollow tube that houses the piston and allows for fluid flow. The piston divides the cylinder into two chambers: the rod side and the cap side. The piston rod extends from the piston and provides a connection point for external loads. Seals are used to prevent fluid leakage and maintain hydraulic pressure within the cylinder.

Function:

– The function of a hydraulic cylinder is to convert the pressure and flow of hydraulic fluid into linear force and motion. The hydraulic fluid, typically oil, is pressurized and directed into one of the chambers of the cylinder. As the fluid enters the chamber, it applies pressure on the piston, causing it to move in a linear direction. This linear motion of the piston is transferred to the piston rod, creating a pushing or pulling force.

Working Principle:

– The working principle of a hydraulic cylinder is based on Pascal’s law, which states that pressure exerted on a fluid in a confined space is transmitted equally in all directions. In a hydraulic cylinder, when hydraulic fluid is pumped into one side of the cylinder, it creates pressure on the piston. The pressure is transmitted through the fluid to the other side of the piston, resulting in a balanced force across the piston and piston rod. This force generates linear motion in the direction determined by the fluid input.

Applications:

– Hydraulic cylinders find extensive use in a wide range of applications due to their ability to generate high forces and precise control of linear motion. Some common applications include:

1. Construction Equipment: Hydraulic cylinders are used in excavators, loaders, bulldozers, and cranes for lifting, pushing, and digging tasks.

2. Manufacturing Machinery: Hydraulic cylinders are employed in presses, machine tools, and material handling equipment for pressing, clamping, and lifting operations.

3. Agricultural Machinery: Hydraulic cylinders are used in tractors, harvesters, and irrigation systems for tasks like steering, lifting, and controlling attachments.

4. Transportation: Hydraulic cylinders are utilized in vehicles such as dump trucks, garbage trucks, and forklifts for tilting, lifting, and tipping operations.

5. Aerospace and Defense: Hydraulic cylinders are employed in aircraft landing gear, missile systems, and hydraulic actuators for control surfaces.

6. Marine and Offshore: Hydraulic cylinders are used in ship steering systems, cranes, and offshore drilling equipment for various lifting and positioning tasks.

In these applications, hydraulic cylinders offer advantages such as high force capability, precise control, compact size, and durability. They provide efficient and reliable linear motion, contributing to enhanced productivity and functionality in a wide range of industries.

Overall, hydraulic cylinders are integral components in various applications where controlled and powerful linear motion is required. Their ability to convert hydraulic energy into mechanical force makes them invaluable in numerous industries, enabling the operation of heavy machinery, precise positioning, and efficient load handling.

China OEM OEM High Quality Hydraulic Cylinders for Excavator Construction Machinery   vacuum pump engine	China OEM OEM High Quality Hydraulic Cylinders for Excavator Construction Machinery   vacuum pump engine
editor by CX 2023-11-17

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