Six Beam Flexible Couplings, Set Screw Style
Set screw style six beam couplings from Ruland Manufacturing are RoHS 3 & REACH compliant for light-duty power transmission applications. These units have a balanced design for reduced vibration at high speeds and two sets of three spiral cuts for high torque capacity & low windup. They test beyond DIN 912 12.9 standards and consist of multiple beam cuts to improve parallel misalignment capabilities. These couplings are made of 7075 aluminium for light weight & low inertia, and 303 stainless steel for increased torque capability.
Frequently Asked Questions
How to check for alignment after coupling installation?
Tools, such as taper gauge, feeler gauge, dial indicator or straightedge, can be used to check misalignments.
Are beam couplings ideal with keyways?
Straight bore beam couplings can be used with keyways and step bores cannot support keyways. Other coupling designs are suitable for keyways while these couplings ideally fail before keyway necessity arises.
How do six beam couplings differ from 4 beam variants?
Four beam couplings have more flexibility with lower bearing loads only. Whereas, six beam couplings provide higher torsional stiffness and torque withstanding capabilities.
Can beam couplings withstand axial forces?
No, these couplings are not designed for axial loads or push pull type applications. The axial misalignment rating of these couplings only accounts for the thermal expansion of shafts during operation.
Are stainless steel couplings usable in a wash down environment?
The primary reason for using stainless steel beam couplings is high torque and torsional stiffness capabilities. They feature alloy steel screws in standard configuration and thus should not be used in wash down environments. Using stainless steel couplings for wash down environments is just a common misconception.
Why do we use Nypatch screws on six beam couplings?
Light duty applications like connecting servo motors to lead screws are demanding and prone to cause vibrations that often loosen standard style screws during power transmission. Nypatch screws prevent this from happening and also prevent galling with stainless steel couplings.
What couplings are suitable for push-pull applications?
Rigid couplings are designed for operating in push-pull applications.
What is axial load capability?
Axial load factor is determined by various factors like screw size, shaft collar type, coupling material and shaft hardness.
What is the value of maximum misalignment in couplings?
Couplings are designed to transmit given limiting torque. Flexible couplings can tolerate up to 3 degrees misalignment (angular) and 0.75 mm parallel misalignment. For accommodating more misalignment, users should use a universal joint.
