Product Description

Z4 Shaft Locking Device Clamp Shrink Disc Locking Shaft Coupling

Description:

Z4 type expansion sleeve consists of an open double cone inner ring with different taper and an open double cone outer ring and 2 double cone compression rings, which are locked with hexagon socket bolts.

Compared with the Z2 type, the joint surface length is high, the centering precision is high, and it is used in the case where the rotation precision is required to be high and a large load is transmitted.
When selected, the tolerance bands of the shaft and the hole combined with the expansion sleeve are h8 and h9 respectively;

Material: 45# steel 

Nominal torque/ rated torque:  6.85KNm-245KNm 

Hole diameter: 70mm- 300mm 

The Z4 type expansion joint screw has a mechanical performance rating of 12.9.

 

 

1. installation:

The expansion sleeve is greased at the factory and can be installed directly. When installing, first screw 3 bolts 4 into the screw holes of the flange of the other part 1 and spread them evenly around the circumference to open the inner sleeve 1 and the outer sleeve 2. Then place the expansion sleeve into the hub hole of the design position and tighten the bolt with the force gauge. The method of tightening is to screw each bolt to 1/4 of the rated torque at a time. The order of tightening is bounded by the slit. The left and right cross symmetry is tightened 1 after the other to ensure that the rated torque value is reached. 

2. Disassembly:

Loosen all bolts a few turns before disassembly. Then screw in the bolt 4 top loose sleeve in the disassembled screw hole. 

3. Protection:

MoS2 oil is strictly prohibited during installation to prevent contamination of the expansion sleeve. On machines with poor open air or working environment, rust-proof grease should be applied regularly on the exposed end face and bolts of the expansion sleeve. The expansion sleeve type with better rust resistance should be selected.

Product parameters:
Features:
1. Easy to install and disassemble;
2. Good exchangeability;
3. Long lifetime and high efficient transmitting;
4. While running under overload, it can protect the equipment from breakdown.

Packing and shipping
1 Prevent from damage.
2. As customers’ requirements, in perfect condition.
3. Delivery : As per contract delivery on time
4. Shipping : As per client request. We can accept CIF, Door to Door etc. or client authorized agent we supply all the necessary assistant

FAQ:
Q 1: Are you a trading company or a manufacturer?
A: We are a professional manufacturer specializing in manufacturing
various series of couplings.

Q 2:Can you do OEM?
Yes, we can. We can do OEM & ODM for all the customers with customized artworks in PDF or AI format.

Q 3:How long is your delivery time?
Generally, it is 20-30 days if the goods are not in stock. It is according to quantity.

Q 4: How long is your warranty?
A: Our Warranty is 12 months under normal circumstances.

Q 5: Do you have inspection procedures for coupling?
A:100% self-inspection before packing.

Q 6: Can I have a visit to your factory before the order?
A: Sure, welcome to visit our factory. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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Materials Used in Manufacturing Disc Couplings

Disc couplings are typically constructed using a combination of high-quality materials that contribute to their durability, strength, and performance. Some commonly used materials include:

• Stainless Steel: Stainless steel is a popular choice due to its corrosion resistance and high strength-to-weight ratio. It ensures longevity and can withstand harsh environments.
• Aluminum: Aluminum is known for its lightweight properties and is often used in applications where weight reduction is essential while maintaining reasonable strength.
• Steel: Carbon or alloy steel is chosen for its robustness and ability to handle high torque loads and harsh operating conditions.
• Bronze or Brass: These materials can be used in specific applications where electrical conductivity is a concern, or when friction and wear properties are important.

The selection of materials depends on factors such as the coupling’s intended application, torque requirements, environmental conditions, and the desired balance between strength, weight, and resistance to wear and corrosion.

Impact of Number and Configuration of Disc Packs on Coupling Performance

The number and configuration of disc packs in a disc coupling have a significant impact on its overall performance. Here’s how:

• Number of Disc Packs: Increasing the number of disc packs can enhance the coupling’s torque capacity and stiffness. This allows it to handle higher levels of torque while maintaining its flexibility to accommodate misalignment.
• Configuration: Different configurations, such as single-flex, double-flex, or multiple-flex, offer varying degrees of angular misalignment compensation and torsional stiffness. Single-flex configurations provide greater misalignment capacity, while double-flex configurations offer improved torsional stiffness.

Choosing the appropriate number and configuration of disc packs depends on the specific application requirements:

• Torque Transmission: Applications with high torque demands may benefit from a higher number of disc packs to ensure reliable torque transmission.
• Misalignment Compensation: Applications with moderate misalignment may opt for configurations that offer higher angular misalignment compensation.
• Torsional Stiffness: For applications where torsional stiffness is critical, a configuration with multiple-disc packs may be preferred.
• Space Limitations: Consider the available space and coupling dimensions when choosing the number and configuration of disc packs.
• Dynamic Behavior: Depending on the application’s dynamic behavior and vibration characteristics, the appropriate configuration can be selected to minimize resonances.

Ultimately, the selection of the number and configuration of disc packs in a disc coupling should be based on a thorough understanding of the application’s torque, misalignment, and stiffness requirements to optimize coupling performance and reliability.

Function of Disc Couplings in Torque Transmission and Misalignment Compensation

Disc couplings are designed to transmit torque between two shafts while accommodating various forms of misalignment. The primary components of a disc coupling include two hubs and a flexible disc element made of a resilient material such as stainless steel. Here’s how a disc coupling works to transmit torque and handle misalignment:

• Torque Transmission: When torque is applied to one hub of the disc coupling, it induces angular displacement in the flexible disc. The flexible disc element bends slightly, allowing the torque to be transmitted from one hub to the other. This bending action of the disc results in an elastic deformation, which helps maintain the torque transfer.
• Angular Misalignment Compensation: Disc couplings can accommodate angular misalignment between the two connected shafts. As the hubs are misaligned angularly, the flexible disc element compensates by bending at an angle. The disc’s flexibility and the elastic properties of the material allow it to absorb and accommodate the angular misalignment without transmitting excessive forces to the connected machinery.
• Parallel Misalignment Compensation: In cases of parallel misalignment, where the axes of the two shafts are not perfectly aligned, the disc coupling can also absorb a certain degree of parallel offset. The flexibility of the disc allows for slight axial movement, ensuring that the hubs remain connected even when there’s a minor parallel misalignment.
• Torsional Stiffness: While disc couplings are designed to accommodate misalignment, they also exhibit torsional stiffness. This means that under normal operating conditions, the disc coupling remains rigid enough to efficiently transmit torque between the shafts, minimizing torsional deflection and maintaining the integrity of torque transfer.

The design and material properties of the flexible disc element play a crucial role in determining the coupling’s ability to handle misalignment while transmitting torque effectively. Disc couplings are widely used in various industrial applications where torque transmission and misalignment compensation are critical requirements.

editor by CX 2024-03-14