| Customization: | Available |
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| Standard Or Nonstandard: | Standard |
| Shaft Hole: | Pilot Bore |
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Our L-Series jaw couplings are available with a wide selection of bore and key options, including splines, to cater to various requirements. Expertly engineered for different applications, these couplings are perfect for use with electric motors and internal combustion engines. They deliver a seamless shaft-to-shaft connection, ideal for demanding industrial applications. Moreover, they are easily interchangeable with other popular domestic brands, offering flexibility and convenience.
The addition of this versatile product to our comprehensive power transmission lineup allows us to offer our customers a diverse and cost-effective range of solutions. Our high-quality couplings are crafted from sintered iron and are available with a selection of drive elements: Buna-N, Urethane, and Hytrel, ensuring adaptability and performance.
Jaw couplings are versatile, all-purpose industrial power transmission tools known for their exceptional performance. They handle a variety of temperatures, manage angular misalignment and associated loads, resist chemicals, and deliver impressive speed and damping abilities. A standard jaw coupling consists of three components: two hubs, typically bored to fit precisely, and an elastomeric insert, also known as a spider. While designed for longevity, these inserts eventually require replacement.
In the event of insert failure, our coupling's fail-safe design becomes crucial. The hubs interlock to carry the load, albeit without the damping effect, providing the operator a window to halt operations safely. It is imperative to replace the insert and both hubs promptly post-failure due to wear from hub-to-hub contact, which diminishes usability. Continuous operation without an insert is sub-optimal and not recommended.
These couplings operate efficiently without the need for lubrication. Unlike gear, grid, or chain couplings that necessitate periodic greasing, our jaw couplings maintain functionality without additional upkeep, provided the insert remains intact.
Traditional jaw couplings transmit torque through the elastomeric flexing element in compression. This method is advantageous, as elastomers endure load and peak stresses better in compression than in shear motion, ensuring reliable torque transmission.
The standard jaw-coupling insert is composed of solid Nitrile Butadiene (Buna N) rubber, a flexible elastomer known for its oil resistance, natural rubber-like resilience and elasticity. It operates effectively within a temperature span of -40° to 212°F (-40° to 100°C), making it suitable for cyclic loads. Generally, it features a shore hardness of 80A, exceptional damping capacity, and robust chemical resistance.
An alternative to the standard Buna N rubber insert is the open center design. While the closed center version is more robust and suited for higher speeds, the open center spider excels in applications with minimal shaft separation, providing a solution where space constraints are an issue.
A third insert variation encases the coupling and is secured by a retaining ring. This design simplifies insert replacement without shifting the hubs on the shaft. However, it is best suited for lower RPM speeds, often limited to 1750 RPM or less, depending on design specifications.
Beyond the standard Buna N inserts, we offer options in urethane, Hytrel, and Bronze. Urethane inserts boast approximately 1.5 times the torque capability of Buna N but offer reduced damping. Their operational temperature range is narrower (-30° to 160°F, -34° to 71°C), but they provide good oil and chemical resistance. However, they are not ideal for cyclic or start/stop applications.
Hytrel inserts are engineered to excel in high torque and high temperature operations ranging from an impressive -60° to 250°F (-51° to 121°C). These inserts offer remarkable resistance to oil and chemicals, making them ideal for demanding environments. However, they are not advised for cyclic or start/stop applications and generally allow only a half degree of angular misalignment, unlike the usual 1 degree provided by Buna N and Urethane inserts. Despite this, their ability to handle parallel misalignment remains comparable to that of Buna N & Urethane inserts, maintaining a measure of approximately 0.015 inches.
For slow speed applications necessitating high torque capabilities, rigid, porous oil-impregnated bronze inserts are the go-to solution, supporting operations up to a maximum of 250 RPM. These inserts stand resilient against extreme temperatures ranging from -40° to 450°F (-40° to 232°C), and are impervious to water, oil, or dirt. While their angular misalignment capability mirrors that of Hytrel, with a typical half degree allowance, their parallel misalignment handling is slightly reduced to 0.010 inches.
Jaw couplings have their operational temperature limits dictated by the elastomeric insert's capacity. These couplings offer moderate capabilities in managing both angular and parallel misalignments, yet certain applications might demand more. The presence of radial stiffness can lead to substantial reactionary loads. Moreover, vertical applications might necessitate special hubs if a standard setscrew fails to prevent hub sliding. Traditional jaw couplings are unsuitable for motion control applications due to inherent looseness between the jaws and elastomer, which compresses over time, affecting performance.
Curved jaw couplings distinguish themselves from straight jaw designs with their uniquely curved tooth profile. This European-favored design is also extensively used in motion control applications. By employing a highly rigid urethane insert, these couplings achieve a backlash-free performance, often referred to as GS or Spidex. However, a limitation of the curved jaw design is its inability to be converted into an in-shear configuration due to the inherent jaw curvature.
Q1: Are you trading company or manufacturer?
A: We are professionally manufacturer in Shanghai China and own ourself Punchingworkshop,Forging workshop & Casting-workshop, warmly welcome to visit us.
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