Jaw Coupling

Understanding Jaw Couplings

Jaw couplings transmit torque through the compression of an elastomeric spider placed between the jaws of two hubs. The design is simple yet effective, allowing for angular and parallel misalignment compensation. The key component is the spider, whose material and hardness determine the coupling's characteristics.

Key Advantages:

• Cost-Effective: Generally one of the most economical flexible coupling types.
• Vibration Damping & Shock Absorption: The elastomer spider effectively absorbs torsional vibrations and shock loads, protecting connected equipment.
• Fail-Safe Design: If the spider fails, the jaws of the hubs interlock, allowing continued (though noisy) power transmission for a short period, preventing catastrophic failure.
• No Lubrication: Requires no lubrication, simplifying maintenance.
• Easy Installation & Replacement: Simple three-piece construction makes installation straightforward, and spider replacement is easy.
• Variety of Spider Materials: Different elastomer materials (PU, NBR, Hytrel®) offer varying levels of torque capacity, damping, chemical resistance, and temperature range.

Considerations:

• Backlash: Standard jaw couplings inherently have some backlash due to the clearance needed for the spider. Pre-compressed or specialized spider designs can minimize this.
• Limited High-Speed Capability: Not typically suited for very high-speed applications compared to metallic couplings.
• Spider Wear: The elastomer spider is a wearing part and may require periodic inspection and replacement depending on operating conditions.

Shreeji Gears: Your Ahmedabad Jaw Coupling Specialist

We manufacture reliable jaw couplings suitable for a wide array of general industrial power transmission needs.

Why Choose Shreeji Gears for Jaw Couplings?

• Quality Hub Manufacturing: Precision machining or casting of hubs from materials like Cast Iron, Aluminium, or Steel ensures proper fit and durability.
• Diverse Spider Options: Offering spiders in various materials (NBR, PU, Hytrel®) and hardness levels (Shore A) to match application requirements for torque, damping, and environment.
• Standard & Custom Bore Sizes: Providing couplings with standard and custom bore sizes, keyways, and set screw options.
• Large Inventory/Quick Availability: Often maintaining stock of common sizes for faster delivery.
• Application Support: Helping customers select the appropriate jaw coupling type and spider material for their specific pump, fan, motor, or gearbox application.
• Cost-Effective Solutions: Delivering reliable performance at a competitive price point.

General Technical Specifications (Customizable):

• Type: Jaw Coupling / Spider Coupling (Straight Jaw, Curved Jaw types available).
• Hub Material: Cast Iron (GG25), Aluminium, Sintered Steel, Steel.
• Spider Material: NBR (Nitrile), PU (Polyurethane), Hytrel®, Bronze.
• Spider Hardness: Typically 80 Shore A, 92 Shore A, 95/98 Shore A, 64 Shore D (Hytrel®).
• Bore Range: Wide range from small (e.g., 6mm) to larger sizes (e.g., 100mm+).
• Torque Rating: Dependent on size and spider material/hardness.
• Max Speed: Moderate speed capability, varies with size and balance.
• Misalignment: Good angular and parallel misalignment capability.
• Temperature Range: Dependent on spider material (e.g., NBR: -40°C to +100°C, PU: -30°C to +80°C).

Get reliable, cost-effective power transmission with excellent vibration damping. Choose Shreeji Gears, your expert jaw coupling manufacturer in Ahmedabad. Contact us today to find the right coupling for your general industrial needs!