‚Äč
Jaw Couplings
grey block

Jaw Couplings from Ruland

 
 

About

Zero-backlash jaw couplings Ruland manufactures zero-backlash jaw couplings with bore sizes ranging from 1/8” to 1-1/4” and 3mm to 32mm. Jaw couplings feature a highly customizable three-piece design, have low inertia, and are well suited for applications that require dampening in industries such as semiconductor, solar, machine vision, liquid handling, and medical.

The three-piece balanced design consists of two aluminum hubs and an elastomeric element called “the spider,” which creates a low inertia coupling capable of speeds up to 8,000 RPM. Jaw couplings allow inch and metric hubs (set screw, clamp style, keyed, and keyless) to be easily combined forming a single coupling. Users can tailor the performance of jaw couplings to match their application needs as spiders are available in three durometers, 85 Shore A for greatest dampening, 92 Shore A for balance of dampening and torsional stiffness, and 98 Shore A for a small amount of dampening and highest torsional stiffness.

Ruland jaw couplings undergo a proprietary hub machining process to produce a curved jaw profile that press fits with the spider, assuring zero-backlash operation. The curved jaw profile concentrates the forces to the center of the spider’s limbs, improving the effectiveness of the elastomer material. Jaw couplings are considered fail safe because if the spider were to fail, the jaws of the two hubs interlock for direct power transmission, allowing the application to be safely shut down for maintenance.

Made of an advanced polyurethane material, the jaw coupling spider dampens impulse loads while minimizing shock to the motor and other sensitive equipment. Stand offs on the spider limbs help installers maintain proper spacing between the two hubs, assuring electrical isolation and full angular misalignment capabilities. Spiders are designed to be the wear element of the coupling making replacement cost effective and simple while restoring full performance abilities to the coupling.

Special jaw coupling designs such as stainless steel hubs, multiple set screws, and custom bore size and geometry are available by request. All Ruland products are RoHS2 and REACH compliant.

Learn more about how to choose servo couplings for your particular application from a Ruland expert. Read “What to Look for in a Servo Coupling” written by William Hewitson, Vice President of Operations.

Why Ruland

  • Inch to metric jaw couplingCurved jaw hubs and press fit spiders for zero-backlash performance.
  • Balanced hub design to support higher RPM with reduced vibration.
  • Full range of inch/metric clamp-style and set screw hubs with or without keyways.
  • Coupling hubs machined from high grade (type 2024 t351) aluminum bar stock for precise fit, superior strength, and bright finish.
  • The advanced polyurethane material of the spider dampens impulse loads while minimizing shock to the motor and other sensitive equipment.
  • Spider comes in three different materials including 85 Shore A - Blue for greatest dampening, 92 Shore A - Yellow for accuracy with a small amount of dampening, and 98 Shore A - Red for torsional stiffness and highest torque.
  • Considered fail safe because if the spider becomes compromised the jaws of the two hubs interlock for direct power transmission allowing the machine to be shut down safely.
  • The coupling is designed with the spider as the wear element making replacement cost effective and simple. Replacing the spider will restore the capabilities of the coupling

E-Catalog

JC Jaw Coupling
Jaw Coupling Hubs
Inch/Metric Dimensions
Smaller Outer Diameter
JC Jaw Coupling
Jaw Coupling Hubs
Inch/Metric Dimensions
Larger Outer Diameter
MSPX Jaw Coupling
Jaw Coupling Spider
Inch/Metric Dimensions
Smaller Outer Diameter
MSPX Jaw Coupling
Jaw Coupling Spider
Inch/Metric Dimensions
Larger Outer Diameter

Custom Designs

Custom Jaw CouplingAs a service to our customers, we offer our vast machining experience and talents to meet special needs with custom parts. Our shop is equipped with the machines and skilled people necessary to fill all of your special requirements. If you don't see what you are looking for in our standard line, please inquire about our custom fabrication service.

Examples of Past Specials:

  • Stainless steel hubs
  • Two-piece jaw coupling hubs
  • Special bore sizes and geometry
  • Special lengths, widths and outside diameters
  • Special material and hardware requests
  • And Many Others... Please Contact Us for More Information

  Menu Shadow
Jaw Coupling Hub Jaw Coupling Spider

Jaw Coupling
Hubs

Jaw Coupling
Spiders