| Customization: | Available |
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| Standard Or Nonstandard: | Standard |
| Shaft Hole: | Pilot Bore |
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Our L-Series jaw couplings are meticulously engineered and offered with an impressive array of bore, key, and spline options. These robust jaw couplings are perfectly tailored for various applications that utilize electrical motors and internal combustion engines. They provide a reliable shaft-to-shaft connection, making them ideal for numerous industrial duty applications. Notably, our jaw couplings are designed for interchangeability with other leading domestic brands, enhancing their versatility and appeal.
By adding this product to our already vast selection of power transmission solutions, we deliver an even more varied, cost-effective product line to our valued customers. These couplings are crafted from sintered iron and come with a range of drive elements, including Buna-N, Urethane, and Hytrel, to suit diverse needs.
Jaw couplings serve as versatile, all-purpose industrial power transmission devices. They efficiently operate across varying temperatures, accommodate angular misalignments and the resulting loads, resist chemical exposure, and offer commendable speed and dampening properties. A standard jaw coupling comprises three key components: two hubs, typically bored to a clearance fit, and an elastomeric insert commonly known as a spider. These inserts are engineered for durability but will require replacement over time.
In instances where the insert fails, the coupling's fail-safe design activates, allowing the interlocking hubs to uphold the load, albeit without the dampening benefits of the insert. This system provides an operator with the crucial opportunity to safely shut down the system. Once an insert is compromised, it is imperative to replace both the insert and hubs promptly, as the hubs will have worn each other out and become non-viable for continued use. Operating without an insert is suboptimal and should be avoided.
These jaw couplings boast a remarkable feature: they operate effortlessly without lubrication. Unlike gear, grid, or chain couplings that demand regular grease application, a jaw coupling will continue to function seamlessly without additional maintenance, provided the insert remains intact.
In their traditional configuration, jaw couplings transmit torque through the elastomeric flexing element in compression, which is favored for torque transmission. Elastomers exhibit superior durability and load-bearing capacity in compression, especially during peak loads, compared to in-shear motion.
The standard jaw-coupling insert is expertly crafted from solid Nitrile Butadiene (Buna N) rubber. This flexible elastomer stands out for its oil resistance, resilience akin to natural rubber, and operational capability across a temperature range of -40° to 212°F (-40° to 100°C). It is ideally suited for cyclic loads, and generally boasts a shore hardness of 80A, a high dampening capacity, and strong chemical resistance.
An alternative to the standard Buna N rubber insert is the open center design. While the closed center version offers a robust design suitable for high-speed applications, it limits extremely close shaft separation. The open center spider is specifically designed for scenarios with minimal shaft separation, offering enhanced flexibility in such applications.
A third inventive variation involves the insert enveloping the coupling's exterior, secured by a retaining ring. This design facilitates easy insert replacement without the need to displace hubs on the shaft. However, it is typically limited to lower RPM speeds, sometimes as low as 1750 RPM depending on the design.
Beyond the standard Buna N inserts, we also offer urethane, Hytrel, and Bronze materials. Urethane, for instance, delivers approximately 1.5 times the torque capacity of Buna N, though with a reduced dampening effect. Its operational temperature range is narrower, spanning -30° to 160°F (-34° to 71°C). It offers commendable resistance to oils and chemicals but is not advisable for cyclic or start/stop applications.
Hytrel inserts are engineered for demanding high torque and high temperature operations, withstanding impressive ranges from -60° to 250°F (-51° to 121°C). These inserts boast excellent resistance to both oil and chemicals, making them ideal for tough environments. However, they are not advised for cyclic or start/stop applications, and typically manage up to a half degree of angular misalignment, compared to the standard 1 degree offered by Buna N and Urethane. Despite this, they maintain similar performance to Buna N & Urethane inserts in handling parallel misalignment, approximately at 0.015 inches.
Rigid, porous oil-impregnated bronze inserts are crafted for slow speed applications, with a maximum capacity of 250 RPM, where high torque is paramount. These inserts excel with resilience against extreme temperatures ranging from -40° to 450°F (-40° to 232°C) and remain unaffected by water, oil, or dirt. Their angular misalignment capability parallels that of Hytrel inserts, typically around a half degree. However, the ability to handle parallel misalignment is slightly reduced to 0.010 inches.
Jaw couplings are inherently limited in their operational temperature range due to the elastomeric insert's capabilities. While they offer moderate misalignment handling-both angular and parallel-certain applications may necessitate enhanced performance. Their radial stiffness can introduce significant reactionary loads, particularly in vertical applications, which may demand special hubs if a setscrew is insufficient to prevent hub slippage. Furthermore, traditional jaw couplings are not ideal for motion control applications, due to inherent looseness between the jaws and elastomer, which can increase as compression occurs over time.
Curved jaw couplings set themselves apart from the straight jaw design with their uniquely curved tooth profile. This design is widely favored, especially in motion control applications across Europe, as utilizing a very stiff urethane insert can yield a backlash-free coupling, sometimes referred to as a GS or Spidex. However, a limitation of the curved jaw design is its inability to be modified into an in-shear design due to the curvature of its jaws.
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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