search.noResults

search.searching

saml.title
dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
FEATURE Drives, Controls & Motors


Ruland jaw couplings for servo motors


Z


ero-backlash jaw couplings from Ruland have high dampening capabilities, can accommodate all forms of misalignment, and


are highly customisable. They are well- suited for servo motors that are often used in precise positioning applications found in the semiconductor, solar, medical and robotics sectors.


Each application that uses a servo motor will have diff erent performance requirements such as rpm, torque and misalignment. It may be challenging for a motor manufacturer or integrator to specify one coupling that can satisfy all these requirements. Zero-backlash jaw couplings are a three- piece design comprised of two lightweight aluminum hubs and an elastomeric insert “spider”. The spider is available in three durometers: 98 Shore A for the highest torque, 92 Shore A for a balance of stiff ness and compliance, and 85 Shore A for the highest dampening capabilities. Inch, metric, keyed and keyless hubs with clamp or set screw hardware can be combined to fi t user shaft requirements. This combination of options within an outer diameter gives motor manufacturers and integrators the ability to choose one coupling envelope with hundreds of


Jaw couplings are ideal for servo-motor-driven systems that require fine positioning with high acceleration and deceleration curves


Jaw couplings from Ruland with spiders are available in three durometers. Ruland jaw couplings make it easy for servo motor manufacturers and integrators to offer a standard coupling that can have performance tailored to the need of each application


diff erent standard combinations, allowing coupling performance to match application requirements.


Proprietary curved jaw profile Ruland uses a proprietary curved jaw profi le on the hub tenons that press fi t with the spider to ensure zero-backlash operation. Standard jaw couplings found elsewhere on the market have a straight jaw design that introduces backlash and makes them less suitable for servo motor systems. In the event of spider failure, the hub tenons of Ruland jaw


couplings will interlock to continue power transmission. This feature is useful in servo motor applications where abrupt stops can cause damage to sensitive system components. The user can safely shut down the application and replace the spider, restoring full system capabilities at a lower cost relative to other coupling styles that require complete replacement of the coupling. Ruland zero-backlash jaw couplings have a balanced design for reduced vibration at higher speeds, a critical feature in servo motor applications with high acceleration and deceleration curves. They are available in bore sizes from 1/8 inch to 1-1/4 inch and 3-32mm. All Ruland jaw couplings are carefully manufactured in Ruland’s Marlborough, MA, factory from bar stock sourced from select North- American mills. Stainless steel hubs and a spider with a centre hole are available on request.


Jaw couplings are part of Ruland’s motion control coupling product line which also includes beam, bellows, controlfl ex, disc, oldham and slit couplings. 3D CAD fi les, full product specifi cations and installation videos are available on www.ruland.com.


CONTACT:


Ruland www.ruland.com


automationmagazine.co.uk


Automation | February 2021


21


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46