New Jaw Couplings Have Zero Backlash

Zero backlash jaw couplings that are three piece couplings comprised of two hubs and a plastic element are one of Ruland Manufacturing’s new products in their coupling line.

The Spider, shown below, made of an advanced polyurethane material, provides dampening of impulse loads, minimizing shock to the motor and other sensitive equipment.

Available in two durometers, these spiders allow the user to customize the jaw coupling’s performance. Selecting a soft spider will give the jaw coupling the greatest dampening characteristics, while a hard spider will provide the greatest torsional stiffness and strength. All spiders are press fit onto a curved jaw profile, 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. Raised contact points on the spider limbs help maintain proper spacing between the two hubs, assuring electrical isolation and full angular misalignment capabilities.

Jaw couplings are considered fail safe because, even if a spider fails, the jaws of the two hubs interlock allowing direct power transmission, allowing the application to be safely shut down for maintenance.

www.ruland.com

FUTEK Offers New Submersible Miniature Load Cell

FUTEK has recently released their model LSB210, a Submersible Jr. S-Beam Load Cell used in applications where protection from liquids is required. Although the product was built for a diverse range of applications examples include fiber tension, medical bag weighing, and automated feedback control systems. The LSB210 S-Beam is a model from FUTEK’s miniature Sensors line with a thickness of 0.25 inch and low profile height of 0.75 inch. The load cell has a high accuracy with a deflection of 0.005” nominal and an operating temperature of -60° F to 200° F. As an extra feature, this model may also be offered with a USB output option.

This load cell is capable of servicing numerous applications industry wide where protection from liquids is required. This product offers a perfect mixture of size, accuracy and the assurance of an overload protection. The LSB210 Submersible Miniature S-Beam Load Cell is available in 100g to 100lbs (1N – 445N) capacities. Similar to our LSB200 model, the LSB210 S-Beam Jr. Load Cell is also available with a brand new USB Digital Interface with 16 bits resolution.

With all of its design features this Miniature S Beam Load Cell is suitable for critical applications involving tight or limited space. This model also has a nonlinearity starting at 0.1%, deflection of 0.005” nominal. This Jr. S Beam Load Cell can be modified or customized to meet your requirements and most capacities are in our inventory making them available for 24 hour shipping. Similar to our entire Load Cell product line the LSB210 model is manufactured in the US and uses metal foil strain gauge technology.

Product Highlights:

–Submersible
–Lightweight: 0.3oz
–Miniature size – 0.75 inches tall
–Built In Overload Protection
–Metric Threads Available
–Capacity ranges: 100g – 100lbs. (1 – 445 N)

For those who are a looking for a complete system solution, FUTEK can provide both signal conditioned displays or our VCal Portable System. FUTEK’s VCal Portable System brings an easy-to-use system verification directly to the customer making it ideal for on-site verification and calibration of your products. FUTEK LSB Series is also available with TEDS / IEEE1451.4 option.

FUTEK
www.futek.com

Machined Spring Features HELI-CAL Flexure

SANTA MARIA, CA—The HELI-CAL® Flexure is a flexible helix (curved beam) machined into a unique configuration that incorporates special design requirements, performance features and/or characteristics. The material is basically unlimited.

When used as a spring, the multi-functional flexure provides desired and predictable elastic performance in compression, extension, torsion, lateral bending and lateral translation modes.

One huge advantage of this technology—it enables customer specified end-attachments, such as tangs, clamps, flanges or threaded ends to be integrated into a single multi-functional component.

Helical Products Company, Inc.
www.Heli-Cal.com

Things to Consider When Choosing Flexible Shaft Couplings

T.E.A Transmissions says machine designers should consider torsional stiffness, backlash, torque and attachment style when looking to specify flexible shaft couplings.

According to T.E.A Transmissions, its bellows couplings have high torsional stiffness and can be used in any drive system where high levels of motion integrity are essential.

The company says bellow couplings are backlash free and capable of speeds up to 10,000Rpm.

T.E.A Transmission claims helix couplings are manufactured as one piece therefore achieving its flexibility in angular, radial and axial modes. The couplings are capable of speeds up to 8000Rpm.

Bellows and helix couplings are typically used for encoder drives in closed-loop servo system applications.

www.tea.net.au

Stafford Stepped Couplings

Stafford Manufacturing Corp. offers a line of rigid, clamp-type reducer couplings that are stepped down to mate large and small shafts, inch-to-metric shafts and smooth to keyed bores.

Stafford Stepped Couplings include one-, two- and three-piece styles with reducer bores for connecting shafts from 1/4” to 2-1/2” I.D., including inch-to-metric and smooth-to-keyway. Featuring eight hex type clamp screws each to provide the holding power necessary for high-load applications, these rigid reducer couplings will not mar expensive drive components.

Suitable for any shaft step-down requirement, Stafford Stepped Couplings are available in steel, stainless steel, and aluminum. A full range of standard combinations are offered and specials can be provided to meet custom requirements. Applications include maintaining and upgrading drive systems in all types of processing, mixing and conveying equipment.