Product Description

Rolling Straight Thread Rebar Coupler 

–We are 1 of the most important writers of the standard JG/T163-2013 Couplers for Rebar Mechanical Splicing.
–We are the steel tube factory which are specialized in producing the high quality carbon steel&alloy steel as the raw material of bolted coupler.
–Design and manufactured in compliance with ACI318, JGJ107, UBC 1997, BS8110, NF35-20-1, DIN1045, ISO 15835.
–We are good at designing and customizing according to customers’ requirements based on required major diameter, pitch of thread, minimum tensile strength and rebar strength.
 

Specifications

Product Name	Rolling Straight Thread Rebar Coupler
Material	Carbon Steel ASTM 1045 (45#) / Alloy Steel ASTM 5140 (40Cr)
Standard	Comply with Chinese standard JG/T 163-2013 Couplers for Rebar Mechanical Splicing, Amercian standard ACI318 ACI349, British standards BS8110, French standard NF35-20-1, German standard DIN1045, ISO 15835 and other relevant standards.
Used for rebar Grade	BS 4449, B500, JG/T 163-2013, CHINAMFG 400, CHINAMFG 500, HRB600, ASTM A615 Grade 60/Grade 75
Size	Suitable for rebar size from 16mm to 50mm
Thread	60° / 75°
Packing	Wooden Case + Carbon Box
Customization	Customizing based on required major diameter, pitch of thread, minimum tensile strength and rebar strength

 

Size of  Rolling Straight Rebar Coupler
Size of Rebar	Outer Diameter(mm)	Length(mm)	Thread(M*P)
Ф16	24	40	M16.55*2.5
Ф18	27	45	M18.65*2.5
Ф20	30	50	M20.65*2.5
Ф22	32.5	55	M22.65*2.5
Ф25	37	60	M25.65*3.0
Ф28	41.5	65	M28.65*3.0
Ф32	47.5	72	M32.65*3.0
Ф36	53	80	M36.65*3.0
Ф40	59	88	M40.65*3.0
Ф50	74	108	M50.65*3.5

 

Application

Our products were exported to Europe, America, Japan, South Korea, The Middle East, Southeast Asia and in total 6 continents over 20 countries, and which has been consistently trusted by customers.

Production progress:

Test

Certificate

ABOUT TENJAN
HangZhou CHINAMFG Steel Tube Co., Ltd. was founded in 2004. The annual production capacity can reach 60,000 tons under years of development. We are a leading technical manufacturer in the seamless steel tube and rebar coupler industry. Tenjan’s chairman, Xihu (West Lake) Dis. Gu, already has 25-year experience in steel tube industry and is the major constitutor of national standard Couplers for Rebar Mechanical Splicing JG/T 163-2013. 

CHINAMFG is specialized in custom production of high quality seamless steel tubes under international standards ASTM A519, ASTM A106, ASTM A500, ASME SA500, DIN2391, DIN1629, EN10305-1, DIN17121, EN15717-1, JIS3441, JIS3444 and JIS3445. We provide small batch customization service, especially for small and medium-size enterprises. Raw material, internal and external dimensional tolerances and consistency, internal and external surface roughness, straightness, mechanical properties, eccentricity, special shape, alloy steel, small-diameter thick-walled seamless steel tubes all can be customized. The production range for outer diameter is from 10 to 120mm and for wall thickness is from 1 to 20mm

Why Choose Tenjan?
 

(1) Large Scale Production,Strong R&D Capability

The annual production capacity can reach 60,000 tons under years of development. Every-year R&D investment and a team of technicians enable CHINAMFG with strong R&D capability. CHINAMFG has full system of production with advanced equipment, such as perforation, pickling, cold rolling, cold drawing, straightening, flaw detection, tensile test and machining.

 

(2) Quality Control 

Every batch of products can be traced and guaranteed by the raw material certificate and steel tube quality certificate. Complete quality control system, following ISO9001, to ensure a full inspection process such as pull force test, chemical composition test and eddy current detection.

 

(3) Certification

The chairman of Tenjan, Mr. Xihu (West Lake) Dis. Gu, is 1 of the major constitutors of national standard Couplers for Rebar Mechanical Splicing JG/T 163-2013. And CHINAMFG has won the Quality System Certificates of ISO9001 and IATF16949.

 

(4) Major Customer Case

We have long-term relationship with customers such as BMW, MCC, CNNP, CRRC, Midea, Sinohydro, China Pingmei, China Academy of Building Research and so on.

 

(5) Export Countries

Our products were exported to Europe, America, Japan, South Korea, The Middle East, Southeast Asia and in total 6 continents over 20 countries, and which has been consistently trusted by customers.

 

(6) Customer Service

Tenjan provides considerate service to every customer with fast feedback, quality track and technical support.  

 

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How do Sleeve Couplings Contribute to Reducing Vibrations and Noise in Rotating Equipment?

Sleeve couplings play a significant role in reducing vibrations and noise in rotating equipment. Their design and material properties contribute to damping vibrations and absorbing shocks, resulting in smoother and quieter operation. Here’s how sleeve couplings achieve this:

1. Flexibility and Misalignment Compensation:

Sleeve couplings have a certain degree of flexibility, which allows them to accommodate small misalignments between the connected shafts. When the shafts are misaligned, the sleeve coupling can flex and adjust, reducing the transmission of vibrations from one shaft to the other. By compensating for misalignments, sleeve couplings minimize the generation of vibrations and the resulting noise.

2. Shock Absorption:

During sudden starts, stops, or changes in load, rotating equipment can experience shocks and impact loads. Sleeve couplings have some level of shock absorption capability, which helps dampen the effects of these shocks. By absorbing shocks, sleeve couplings prevent the transmission of high-frequency vibrations and noise to the rest of the system, resulting in a quieter operation.

3. Resilient Material Selection:

The choice of materials used in sleeve couplings also contributes to vibration and noise reduction. Certain materials, such as rubber or elastomers, are known for their damping properties. These materials can be incorporated into the design of sleeve couplings to absorb and dissipate vibrations, effectively reducing noise levels in the system.

4. Uniform Torque Transmission:

Sleeve couplings provide uniform torque transmission between the connected shafts. This balanced torque transmission minimizes torsional vibrations, which can lead to noise generation in the system. By maintaining a smooth torque transfer, sleeve couplings help achieve quieter and more stable operation.

5. Proper Installation and Maintenance:

Proper installation and regular maintenance of sleeve couplings are essential for their optimal performance in reducing vibrations and noise. Ensuring that the coupling is correctly aligned and well-lubricated can further enhance its ability to dampen vibrations and minimize noise levels.

In summary, sleeve couplings contribute to reducing vibrations and noise in rotating equipment by providing flexibility to accommodate misalignments, absorbing shocks, using resilient materials, and ensuring uniform torque transmission. Their ability to mitigate vibrations and noise enhances the overall performance and reliability of the rotating equipment, making them a preferred choice in various industrial applications.

What are the Standard Sizes and Dimensions Available for Sleeve Couplings?

Sleeve couplings are available in a wide range of standard sizes and dimensions to accommodate various shaft diameters and application requirements. The dimensions of sleeve couplings depend on factors such as the shaft size, coupling length, and overall design. Here are some common standard sizes and dimensions for sleeve couplings:

Shaft Sizes: Sleeve couplings are typically designed to fit specific shaft diameters, commonly ranging from a few millimeters to several inches. Standard sizes may include shaft diameters of 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, and so on.

Coupling Length: The length of the coupling refers to the distance between the two ends that connect the shafts. The coupling length is usually determined by the application’s torque and space requirements.

Overall Diameter: The overall diameter of the sleeve coupling varies with the shaft size and coupling design. It is important to ensure that the overall diameter of the coupling fits within the available space and does not interfere with other components in the system.

Keyway Size: Some sleeve couplings feature keyways to provide additional torque transmission and anti-rotation capabilities. The keyway size should match the shaft’s keyway dimensions to ensure a secure connection.

Material Thickness: The thickness of the sleeve coupling’s material is critical for its strength and torque capacity. Standard sleeve couplings are available in various material thicknesses to suit different application requirements.

It’s important to note that while standard sizes and dimensions are readily available, custom sleeve couplings can also be designed and manufactured to meet specific application needs. Custom couplings may be required for non-standard shaft sizes, special torque capacities, or unique environmental conditions.

When selecting a sleeve coupling, engineers should consider the torque requirements, shaft sizes, space limitations, and environmental factors to ensure the coupling’s proper fit and reliable performance.

Can you Explain the Working Principle of a Sleeve Coupling and its Advantages in Various Industries?

A sleeve coupling operates on a simple and effective working principle, making it a versatile choice for various industries. The working principle and advantages of a sleeve coupling are as follows:

Working Principle:

A sleeve coupling connects two shafts with their ends aligned. The coupling consists of a hollow cylindrical sleeve that fits over the shaft ends. The inner diameter of the sleeve matches the outer diameter of the shafts, creating a snug fit. The sleeve coupling does not have any mechanical components like teeth, gears, or keys, relying on the friction between the shaft and the sleeve for torque transmission.

When one shaft rotates, it transfers torque to the sleeve coupling. The frictional force between the sleeve and the shaft causes the sleeve to rotate. As a result, the torque is transmitted from one shaft to the other through the sleeve, enabling power transmission between the two shafts. The sleeve coupling’s flexibility allows it to compensate for minor misalignments between the shafts, ensuring smooth torque transmission even when the shafts are not perfectly aligned.

Advantages in Various Industries:

Sleeve couplings offer several advantages that make them suitable for use in various industries:

• Simple Design and Installation: Sleeve couplings have a straightforward design, making them easy to install and maintain. They do not require complex alignment procedures, which reduces setup time and associated costs in industrial applications.
• Cost-Effectiveness: Sleeve couplings are economical compared to other types of couplings. Their basic design and materials contribute to their cost-effectiveness, making them an attractive choice for budget-conscious projects.
• Flexibility and Misalignment Compensation: Sleeve couplings can accommodate slight angular and axial misalignment between the shafts. This flexibility is beneficial in applications where precise shaft alignment is challenging or when machinery experiences minor shifts during operation.
• Shock Absorption and Vibration Damping: The flexibility of sleeve couplings allows them to dampen vibrations and absorb shocks, preventing them from transferring to connected machinery. This feature enhances the stability and reliability of mechanical systems, especially in applications with varying loads or operating conditions.
• Wide Range of Applications: Sleeve couplings find applications in various industries, including general machinery, pumps, compressors, conveyors, and power transmission systems. They are well-suited for moderate torque and speed requirements in a diverse range of industrial settings.

While sleeve couplings offer significant advantages, they may not be suitable for applications with severe misalignment, high torque or speed requirements, or those that demand precise shaft alignment. In such cases, other types of couplings with specific features may be more appropriate. Proper selection and sizing of the sleeve coupling based on the application’s requirements ensure efficient and reliable power transmission, contributing to enhanced productivity and reduced downtime in various industries.

editor by CX 2024-02-23