Product Description

HMB produce 2 type quick hitch:hydraulic quick hitch,manual quick hitch

Model Unit HMB02 HMB06 HMB08 HMB15 HMB20 HMB25 HMB30 HMB40
Width mm 150-250 250-280 270-300 335-450 420-480 450-500 460-550 600-660
Length mm 300-450 500-550 580-620 680-800 900-1000 950-1000 960-1100 1000-1150
Height mm 220-280 280-320 300-350 380-420 480-520 500-550 560-600 570-610
Pin Diameter Range mm 25-35 40-50 50-55 60-65 70-80 90 90-100 100-110
Weight kg 30-50 50-80 80-115 160-220 340-400 380-420 420-580 550-760
Carrier Ton 0.8-3.5 4-7 8-9 10-18 20-24 25-29 30-39 40-45

Company Profile

Located in HangZhou, ZheJiang province, established in 2009, HangZhou CHINAMFG Construction Machinery Equipment Co.,Ltd registered HMB Brand in 2011. We started to develop oversea market in 2013.With 13 years experience, specialized in manufacturing excavator,skid loader attachemnts and spare parts. Our uncompromising commitment to high quality and thoughtful service wins us a good reputation and more coming partners. 

CE certificate

FAQ

Q: Are you a manufacturer?
A: Yes,our factory was established in 2571.

Q: Are you sure your product will fit my excavator?
A: Our equipments are suitable for most excavators. Show us your excavator model, we’ll confirm the solution.

Q: How about your products warranty?
A: 12 months warranty for hydraulic breaker, beyond the warranty period.

Q: Can you produce according to customers’ design?
A: Sure, OEM/ODM service available. We are professional manufacturer in HangZhou.

Q: What’s the MOQ and payment terms?
A: MOQ is 1set. Payment via T/T,L/C, Western Union accepted, other terms can be negotiated.

Q: How about delivery time?
A: 5-25 work days after the payment.

Q: How about the package?
A: Our equipments wrapped by stretch film, packed by pallet or polywood case; or as requested.

Q: Which country have you exported?
A: Saudi Arabia, America, Thailand, Cyprus, India, Canada, Australia, Peru, Egypt, Brazil, Mexico, South Africa, etc.
 

After-sales Service: One Line Service and Local Service
Warranty: 1 Year
Type: Pistons
Application: Excavator
Certification: CE, ISO9001: 2000
Condition: New
Customization:
Available

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Customized Request

China factory Excavator Spare Parts Connector Quick Coupling with Safe Lock Pin

pin coupling

What Are the Maintenance Requirements for Pin Couplings?

Pin couplings are known for their simplicity and ease of maintenance. Regular maintenance helps ensure the longevity and optimal performance of pin couplings in various mechanical systems. Here are the key maintenance requirements for pin couplings:

  • Lubrication: Most pin couplings require periodic lubrication to reduce friction between the pins and the coupling hubs. Lubrication helps prevent wear and corrosion, ensuring smooth operation.
  • Inspection: Regular visual inspections are essential to identify any signs of wear, misalignment, or damage. Inspecting the pins, coupling hubs, and surrounding components can help detect potential issues early on.
  • Torque Check: It is crucial to periodically check and retighten the bolts or screws that secure the coupling to the shafts. Loose fasteners can lead to misalignment and coupling failure.
  • Alignment: Proper shaft alignment is critical for the effective functioning of pin couplings. Regularly check and adjust the alignment if necessary to minimize wear and vibrations.
  • Environmental Protection: In harsh environments or corrosive conditions, take measures to protect the pin coupling from contaminants or chemicals that could cause damage.
  • Replacement of Worn Components: When any of the coupling components, such as pins or hubs, show signs of significant wear, they should be replaced promptly to prevent further damage.

It is important to follow the manufacturer’s maintenance guidelines and recommendations for the specific type of pin coupling used in the application. Regular maintenance not only ensures the smooth operation of the coupling but also helps prevent unexpected breakdowns and reduces the risk of costly downtime. Proper maintenance can extend the service life of pin couplings and contribute to the overall reliability of the connected equipment.

pin coupling

Usage of Pin Couplings in Applications with Varying Operating Temperatures

Pin couplings are versatile and can be used in a wide range of operating conditions, including applications with varying temperatures. The performance of pin couplings at different temperature levels depends on the materials used in their construction and the specific design features. Here’s how pin couplings handle varying operating temperatures:

1. Material Selection: Pin couplings can be manufactured using different materials, including steel, stainless steel, alloy steel, and various heat-treated materials. The choice of material depends on the application requirements and the temperature range the coupling will be subjected to. Some materials are suitable for high-temperature applications, while others are more suitable for low-temperature conditions.

2. Heat Dissipation: The simple and open design of pin couplings allows for efficient heat dissipation. As the coupling operates, any heat generated due to friction or other factors can easily dissipate into the surrounding environment. This helps in maintaining a stable operating temperature and prevents overheating of the coupling and connected equipment.

3. Lubrication: Proper lubrication is essential for the smooth operation of pin couplings, especially in applications with high temperatures. Lubricants help reduce friction and wear between the mating surfaces, ensuring that the coupling functions optimally even in elevated temperature conditions.

4. Thermal Expansion Considerations: Pin couplings must be designed with thermal expansion in mind. When the operating temperature increases, the materials may expand, and the coupling should have sufficient clearance or play to accommodate this expansion without causing binding or interference.

5. Temperature Limits: While pin couplings can handle a wide range of temperatures, there are limits to the extremes they can tolerate. Excessive heat can lead to degradation of the coupling material, premature wear, or reduced performance. It’s essential to choose a pin coupling that is rated for the specific temperature range of the application.

6. Insulation: In certain cases, pin couplings may need additional insulation to protect against extreme temperature variations or to prevent heat transfer to sensitive components nearby. Insulation can be achieved using materials with low thermal conductivity or by incorporating insulating coatings or barriers.

When selecting a pin coupling for an application with varying operating temperatures, it’s crucial to consider the specific temperature range, the type of materials used in the coupling’s construction, and any additional factors that may impact its performance. Following the manufacturer’s guidelines and ensuring proper maintenance will help ensure the pin coupling operates effectively and reliably across the expected temperature range.

pin coupling

Limitations and Disadvantages of Using Pin Couplings

While pin couplings offer various advantages and are suitable for many applications, they also have some limitations and disadvantages to consider:

  • Misalignment Restrictions: Pin couplings can accommodate a certain degree of misalignment, but excessive misalignment can lead to increased wear and stress on the coupling components. They are not as effective at handling large angular or parallel misalignments compared to other flexible couplings like gear or elastomeric couplings.
  • Less Damping Capacity: Pin couplings have limited damping capacity, which means they may not effectively absorb and reduce vibrations in the system. In applications where vibration damping is critical, elastomeric or flexible couplings may be more suitable.
  • Noisy Operation: The rigid nature of pin couplings can lead to increased noise during operation, especially at high speeds or in applications with significant misalignment. This noise can be a concern in environments where noise levels need to be minimized.
  • Higher Maintenance: Compared to maintenance-free couplings like certain types of elastomeric couplings, pin couplings may require more frequent inspection and maintenance. The pins and other components may experience wear over time and need replacement.
  • Environmental Limitations: Some pin couplings may not be suitable for use in corrosive or high-temperature environments, depending on the materials used. Stainless steel or other corrosion-resistant materials can help mitigate this limitation.
  • Size and Weight: In certain applications, the size and weight of pin couplings may be larger and heavier compared to other types of couplings. This can be a consideration in applications where weight is a concern or space is limited.

Despite these limitations, pin couplings remain a popular choice for many applications where their advantages, such as simplicity, durability, and cost-effectiveness, outweigh their disadvantages. It is crucial to carefully assess the specific requirements of the application and consider factors like misalignment, vibration, maintenance needs, and environmental conditions when selecting a coupling type.

China factory Excavator Spare Parts Connector Quick Coupling with Safe Lock Pin  China factory Excavator Spare Parts Connector Quick Coupling with Safe Lock Pin
editor by CX 2023-12-13