Product Description
Product Description
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Product Name: |
ZRX Special Type Flat and Round End Roller Bearing Cylindrical Dowel Pin Shaft |
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Product Size: |
Custom |
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Material: |
Customized |
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Packaging Method |
Opp bag or according to customer’s requirements |
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Certification |
ISO9001:2015. CE, etc |
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Sample time |
7-15 Days |
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Payment method |
T/T etc |
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Delivery time: |
15 days |
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MOQ |
500 pcs |
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Shipping method |
By Sea, by air,by expree etc |
Detailed Photos
Certifications
Company Profile
HangZhou Zhanrongxin Precision Technology Co., Ltd. is a professional one-stop service provider of structural parts integrating research and development, production and sales.
The company has set up automatic lathe business division, CNC lathe business division, metal stamping business division, CNC numerical control business division, sheet metal business division, injection molding business division, mold business division, electroplating business division, consumer electronics business division.
Committed to providing customers with one-stop product production solutions.
Manufacturing Technique
Packaging & Shipping
FAQ
Q:Are you trading in company or manufacturer?
A:We are the professional manufacturer for 15 years.
Q:Have you exported the goods before and to which regions?
A:60% goods in total has exported abroad,to Japan,India,British,Canada,America and Brazil.
Q:How many employees you have?
A:we have about 300 employees,including sales,engineering,QA,production department and warehouse.
Q:If I agree with the design,can you provide the samples we need?
A:Yes,we can.we surely will provide the samples to you for confirmation before mass production.Meanwhile the drawing we could provide if needed.
Q:What packing you’re using and can be assured safety?
A:Every goods are be packed with customized packing ways in normal cartons with tight proof fabric and wooden cartons for great protection, so it is safe during transportation.
Q:If we have any questions with products,can you provide the technique and solution?
A:Every products are fully checked before shipping, if there is problems you’re facing,please feel free to let us know,we will offer best solution at once.
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| Material: | Stainless Steel |
|---|---|
| Type: | Hexagon Head |
| Groove: | Word |
| Connection: | Common Bolt |
| Head Style: | Round |
| Standard: | DIN, GB, ANSI, BSW, JIS, GOST |
| Samples: |
US$ 2/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do screw jacks contribute to the safety of tasks like vehicle maintenance?
Screw jacks play a crucial role in ensuring the safety of tasks like vehicle maintenance. They provide stability, lifting capabilities, and precise control, which are essential for safe and efficient maintenance operations. Here’s how screw jacks contribute to safety in vehicle maintenance:
- Stability and Load Capacity: Screw jacks are designed to provide high stability and support heavy loads. When used in vehicle maintenance, they offer a solid and secure platform for lifting and supporting the vehicle. This stability ensures that the vehicle remains steady during maintenance tasks, reducing the risk of accidents or injuries caused by uncontrolled movement or instability.
- Precise Height Adjustment: Screw jacks allow for precise height adjustment, enabling mechanics to position the vehicle at the desired working height. This precise control ensures that the vehicle is at an optimal height for accessing various components, performing inspections, or conducting repairs. It helps maintain a comfortable working posture for mechanics, minimizing the risk of strain or injury.
- Locking Mechanisms: Screw jacks often incorporate locking mechanisms to securely hold the lifted load in position. These locking mechanisms prevent accidental lowering of the vehicle during maintenance tasks, providing an additional layer of safety. Even in the event of power loss or system failure, the locking mechanism ensures that the vehicle remains elevated, reducing the risk of injury or damage.
- Even Weight Distribution: When multiple screw jacks are used in a synchronized system, they distribute the load evenly, ensuring balanced support. This even weight distribution minimizes stress on individual components and prevents overloading, reducing the risk of equipment failure or accidents caused by imbalanced loads.
- Integration with Safety Systems: Screw jacks can be integrated with safety systems to enhance overall safety during vehicle maintenance tasks. For example, limit switches or proximity sensors can be used to prevent the screw jacks from exceeding their maximum or minimum height limits. Emergency stop buttons or safety interlocks can be integrated into the control system, allowing immediate halting of the lifting operation in case of emergencies or hazardous situations.
The combination of stability, precise control, locking mechanisms, even weight distribution, and integration with safety systems makes screw jacks a reliable and safe solution for vehicle maintenance tasks. They provide mechanics with a secure working platform, reduce the risk of accidents, and contribute to the overall safety and efficiency of vehicle maintenance operations.
How do screw jacks ensure smooth and controlled linear movement of loads?
Screw jacks are designed to ensure smooth and controlled linear movement of loads. They employ several mechanisms and features that contribute to this capability. Here are some ways in which screw jacks achieve smooth and controlled linear movement:
- Threaded Screw and Nut Mechanism: Screw jacks consist of a threaded screw and a matching nut. The screw is rotated using a handle or a motor, causing it to move linearly through the nut. The thread geometry allows for smooth and controlled movement as the screw advances or retracts. The precision of the screw thread ensures that the load moves linearly without jerks or sudden changes in speed.
- Low Friction and High Efficiency: Screw jacks are designed to minimize friction and maximize efficiency. The components of the screw jack, such as the screw, nut, and bearing surfaces, are manufactured with smooth and precise finishes. This reduces frictional forces and minimizes energy losses during operation. The low friction characteristics enable smooth movement and ensure that a significant portion of the input force is translated into lifting or lowering the load.
- Load Distribution and Stability: Screw jacks are designed to distribute the load evenly across the screw thread and nut. This ensures that the load is supported and guided in a stable manner during linear movement. The load-bearing components of the screw jack, such as the housing and base, are constructed to provide adequate strength and rigidity, minimizing deflection and maintaining stability throughout the lifting or lowering process.
- Anti-Backlash Mechanisms: Backlash refers to the slight axial movement or play that can occur between the screw and the nut in a screw jack. To minimize backlash and ensure precise control, screw jacks often incorporate anti-backlash mechanisms. These mechanisms, such as preloading springs or adjustable backlash nuts, reduce or eliminate any free movement, allowing for more accurate and controlled linear motion of the load.
- Overload Protection: Screw jacks may include overload protection features to prevent damage or failure in the event of excessive loads or unexpected conditions. These features can include mechanical stops, shear pins, or overload clutches that disengage or limit the load-carrying capacity of the screw jack when predetermined limits are exceeded. Overload protection mechanisms contribute to the safe and controlled movement of loads.
By employing a threaded screw and nut mechanism, minimizing friction, ensuring load distribution and stability, incorporating anti-backlash mechanisms, and providing overload protection, screw jacks enable smooth and controlled linear movement of loads. These features make screw jacks suitable for a wide range of applications where precise positioning, lifting, or lowering with controlled speed and stability is required.
What is a screw jack and how is it used in various applications?
A screw jack is a mechanical device that converts rotational motion into linear motion. It consists of a threaded shaft (screw) and a nut that engages with the screw. When the screw is rotated, it moves the nut along the screw’s threads, causing linear displacement. Screw jacks are commonly used in various applications where heavy loads need to be lifted, lowered, or positioned with precision. Here are some key points regarding screw jacks and their applications:
- Principle of Operation: Screw jacks operate based on the principle of linear motion generated by the rotary motion of the screw. When the screw is rotated using a handle, motor, or other power source, the nut moves along the screw’s threads, resulting in linear displacement. The pitch of the screw determines the distance traveled per revolution.
- Lifting and Lowering Heavy Loads: Screw jacks are frequently used for lifting and lowering heavy loads in various industries. They provide a mechanical advantage, allowing operators to exert relatively low force to move substantial loads vertically. Screw jacks are commonly used in applications such as automotive lifts, industrial machinery, stage rigging, and construction equipment.
- Precision Positioning: Screw jacks are capable of precise positioning due to their ability to control linear displacement. By accurately controlling the rotational motion of the screw, the nut can be moved with high precision, enabling precise positioning of loads or equipment. This makes screw jacks suitable for applications that require fine adjustments, such as in assembly lines, testing equipment, or positioning systems.
- Load Capacity: Screw jacks are designed to handle a wide range of load capacities, from relatively light loads to extremely heavy loads. The load capacity of a screw jack depends on factors such as the diameter and pitch of the screw, the material and design of the components, and the mechanical arrangement of the jack. Specialized screw jacks can be engineered to handle loads ranging from a few kilograms to several hundred tons.
- Multiple Jack Systems: In applications that require lifting or moving exceptionally heavy loads or to distribute the load evenly, multiple screw jacks can be used in a synchronized arrangement. By mechanically linking several screw jacks together, they can be operated simultaneously to ensure coordinated and balanced lifting or lowering of the load.
- Automation and Motorization: While manual operation using a handle is common for smaller loads, larger and more complex applications often utilize motorized or automated systems. Electric motors, hydraulic systems, or pneumatic systems can be integrated with screw jacks to provide power and control for lifting or positioning operations. This enables efficient and precise operation, especially in industrial or automated processes.
Screw jacks are versatile mechanical devices used for lifting, lowering, and positioning heavy loads with precision. Their applications range from simple manual operations to complex automated systems, making them indispensable in various industries that require controlled linear motion and load handling.
editor by CX 2023-12-15