China high quality Stainless Steel Curved Jaw Coupling with PU Elastomer

Product Description

CHINAMFG Jaw couplings are designed as 3 piece comination,  including 2 hubs and 1 elastomer made of polyurethane.  The cuved jaw fits CHINAMFG the spider, which minimizes shock to the motor and other sensitive equipment.  
Widely used in various mechanical and hydraulic fields 
High precision in transmission and high rotating speed.
Suitable for wide range of environment, with the higest temperature 280 degree
Good elasticity, hight strength, corrosion resistant, wearable
No need to lubricate,quiet operation 
Quick and easy mounting and disassembly

Item No. Max. Rotation Speed r/min 92 SH A 98 SH A 95 SH A for Φ65 and above 64 SH D
Torque N.m +30° CP Damping Power Tkmax Torsion Angle Torque N.m +30° CP Damping Power Tkmax Torsion Angle Torque N.m +30° CP Damping Power Tkmax Torsion Angle
Max.T kmax Tkw Alternation Max.T kmax Tkw Alternation Max.T kmax Tkw Alternation
UTJC-14 19000 15 2.0 10° 25 3.3 10° 32 4.2 9.0
UTJC-19 19000 20 2.6 4.8 34 4.4 4.8 42 5.5 7.2 3.6°
UTJC-24 14000 70 9.1 6.6 120 16 6.6 150 19.2 9.9 3.6°
UTJC-28 11800 190 25 8.4 320 42 8.4 400 52 12.6 3.6°
UTJC-38 9500 380 49 10.2 650 85 10.2 810 105 15.3 3.6°
UTJC-42 8000 530 69 12 900 117 12 1120 146 18.0 3.6°
UTJC-48 7100 620 81 13.8 1050 137 13.8 1310 170 20.7 3.6°
UTJC-55 6300 820 107 15.6 1370 178 15.6 1650 215 23.4 3.6°
UTJC-65 5600 1250 163 18 1880 244 18 2350 306 27 3.6°
UTJC-75 4750 2560 333 21.6 3840 499 21.6 4800 624 32.4 3.6°
UTJC-90 3750 4800 624 30 7200 936 30 9000 1170 45 3.6°
UTJC-100 3350 6600 858 36 9900 1287 36 12370 1608 54 3.6°
UTJC-110 3000 9600 1248 42 14400 1872 42 18000 2340 63 3.6°
UTJC-125 2650 13300 1729 48 20000 2600 48 25000 3250 72 3.6°
UTJC-140 2360 17100 2223 54.6 25600 3328 54.6 32000 4160 81.9 3.6°

Ubet Jaw coupling grooving type is backlash free, using screws after slotting to eliminate the clearance. This grooving type coupling is suitable for power transmission on main shaft, elevating platform and machine tool.
Material: Alluminum for size below 42
               Steel for size over 42
Finish: Natural or Anodizing
Size Range: 19 to 75
Finished bore: according to ISO fit H7
Keyway width: according to DIN 6885/1
The Tolerance of keyway is Js9

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jaw coupling

Key Features to Consider When Purchasing a Jaw Coupling

When purchasing a jaw coupling for a particular application, several key features and factors should be taken into account to ensure optimal performance and reliability:

  • Material: Jaw couplings are available in various materials, including aluminum, steel, and stainless steel. The choice of material depends on the application’s specific requirements, such as environmental conditions, torque levels, and chemical exposure.
  • Size: Jaw couplings come in different sizes to accommodate various shaft diameters. It is essential to choose the appropriate size that matches the shaft dimensions of the connected equipment.
  • Torque Rating: Consider the torque requirements of the application and ensure that the selected jaw coupling can handle the expected torque levels without causing premature wear or failure.
  • Speed Rating: Check the coupling’s speed rating to ensure it can handle the rotational speed of the application without generating excessive heat or vibration.
  • Misalignment Capability: Assess the jaw coupling’s ability to accommodate angular, parallel, and axial misalignment between the shafts to prevent excessive stress on connected equipment.
  • Backlash: Consider the level of backlash or play in the coupling. Low backlash couplings are suitable for precision applications, while higher backlash may be acceptable for general power transmission.
  • Torsional Stiffness: For applications that require accurate motion control and minimal torsional wind-up, select a jaw coupling with adequate torsional stiffness.
  • Environmental Factors: Consider the operating environment, including temperature, humidity, and exposure to chemicals or corrosive substances. Choose a coupling that can withstand the environmental conditions of the application.
  • Installation and Maintenance: Check the ease of installation and maintenance requirements of the jaw coupling to ensure smooth integration into the system and reduce downtime during maintenance.
  • Manufacturer Reputation: Purchase jaw couplings from reputable manufacturers known for producing high-quality, reliable products with a history of successful applications in various industries.

By carefully considering these key features, buyers can select the most suitable jaw coupling for their specific applications, ensuring efficient power transmission and reliable performance of connected equipment.

jaw coupling

How does a jaw coupling deal with backlash and torsional stiffness?

A jaw coupling addresses backlash and torsional stiffness through its unique design features and choice of materials. Backlash is the amount of free play or clearance between the coupling components, while torsional stiffness refers to the resistance of the coupling to torsional or twisting forces. Here’s how a jaw coupling deals with these aspects:

  • Backlash: Jaw couplings are designed to minimize backlash by ensuring a close fit between the elastomer spider and the jaws of the coupling hubs. The elastomer spider acts as a flexible intermediary that fills the space between the mating jaws, reducing any free play between them. This close fit reduces backlash and provides a more precise and responsive power transmission, especially in reversing or intermittent motion applications.
  • Torsional Stiffness: Torsional stiffness is achieved in jaw couplings by using materials that provide a balance between flexibility and rigidity. The elastomer spider in the coupling offers some flexibility, allowing it to absorb vibrations and dampen shocks. However, to ensure adequate torsional stiffness, the coupling hubs are usually made from sturdier materials like steel or aluminum. The choice of elastomer material and its geometry also influences the torsional stiffness of the coupling. Some applications may require coupling designs with higher torsional stiffness to maintain the accuracy and stability of the system, while others may benefit from more flexible couplings that can accommodate misalignments and shock loads. Overall, the combination of the elastomer’s flexibility and the coupling hub’s rigidity results in a coupling with a balanced torsional stiffness that can meet the specific needs of the application.

In summary, a jaw coupling minimizes backlash by providing a close fit between the coupling components, and it achieves torsional stiffness by using a combination of flexible elastomer materials and rigid coupling hubs. These design considerations make jaw couplings suitable for a wide range of applications that require reliable power transmission, precise motion control, and the ability to handle misalignments and shocks.

jaw coupling

Materials Used in Manufacturing Jaw Couplings

Jaw couplings are commonly made from various materials, each offering different properties and suitability for specific applications. Some of the commonly used materials include:

  • Polyurethane (PU): PU jaw couplings are known for their flexibility, high elasticity, and resistance to abrasion. They are ideal for applications requiring vibration dampening and shock absorption.
  • Aluminum: Aluminum jaw couplings are lightweight, corrosion-resistant, and have good thermal conductivity. They are commonly used in low-to-medium torque applications.
  • Steel: Steel jaw couplings offer high strength and durability, making them suitable for heavy-duty applications with high torque requirements.
  • Stainless Steel: Stainless steel jaw couplings are resistant to corrosion and are often used in applications where there is exposure to moisture, chemicals, or harsh environments.
  • Bronze: Bronze jaw couplings are known for their excellent wear resistance and low coefficient of friction, making them suitable for applications with high-speed and low lubrication.
  • Acetal: Acetal jaw couplings provide good chemical resistance and low moisture absorption, making them suitable for applications where chemical exposure is a concern.
  • Nylon: Nylon jaw couplings offer good strength, flexibility, and resistance to wear and chemicals, making them suitable for various industrial applications.

The choice of material depends on factors such as torque requirements, environmental conditions, operating speeds, and budget considerations. Engineers and designers select the appropriate material to ensure that the jaw coupling can perform optimally and withstand the demands of the application.

China high quality Stainless Steel Curved Jaw Coupling with PU Elastomer  China high quality Stainless Steel Curved Jaw Coupling with PU Elastomer
editor by CX 2024-05-08

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