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Frequently Asked Questions
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What factors should I consider when selecting a coupling?
Selection depends on torque requirements, speed, misalignment (angular, parallel, axial), space constraints, backlash sensitivity, and environmental conditions. For assistance, PIB’s engineering team can recommend the best solution for your application.
Can Oldham couplings be used for electrical isolation?
Yes. Oldham couplings are designed with a center disc that provides zero backlash while electrically isolating the input and output shafts. They are also effective for high parallel misalignment and are commonly used in automation and indexing applications.
What makes disc couplings suitable for dynamic applications?
Disc couplings are ideal for high-performance systems due to their ability to handle high RPM, torque, and angular misalignment with zero backlash. Their flexible disc packs transmit motion while accommodating shaft displacement.
How do jaw couplings work, and when are they used?
Jaw couplings consist of two hubs and an elastomeric spider. They absorb shock and vibration and are used in servo, stepper, and general-purpose motor-driven systems. They provide moderate misalignment compensation and quiet operation.
What is the function of a bellows coupling?
Bellows couplings offer high torsional stiffness and zero backlash, making them suitable for precision applications such as encoder feedback, metrology, and high-speed motion control. They compensate for misalignment while maintaining accurate torque transfer.
What are the advantages of beam couplings?
Beam couplings provide torsional flexibility and compensate for angular, parallel, and axial misalignment. They are typically used in light-duty servo applications and are known for smooth torque transmission with low inertia.
When should I use a rigid coupling?
Rigid couplings are used when shaft alignment is exact and no angular or axial misalignment is present. They offer zero backlash and are ideal for high-precision shaft-to-shaft connections in systems requiring synchronous operation.
What are the main types of couplings available from PIB?
PIB offers a full range of couplings, including rigid couplings, beam couplings, bellows couplings, jaw couplings, disc couplings, Oldham couplings, and universal joints. Each is engineered for specific performance characteristics and applications.