Couplings play a critical role in energy equipment — especially wind turbines. These durable components, which connect the gearbox to the generator, ensure the rotor blade system is operating as it should. Without the right coupling, a wind turbine can’t function properly, driving up maintenance costs and downtime. These scenarios are not welcome—especially since any […]
Heavy-duty shaft coupling strategies
Move beyond traditional coupling designs to improve performance and cut costs Heavy-duty shaft couplings have traditionally had a couple of defining design characteristics. For one, these couplings usually rely on keyed shaft connections. For another, they tend to be over-engineered with regard to stiffness. In many ways, this design approach makes perfect sense. Keyed connections have […]
Locking assemblies: beyond the basics
Although numerous methods exist for coupling two components, choosing the best option for the intended application requires an understanding of all available technologies. For example, when clamping a hub onto a shaft or axle, splined or keyway-based couplings are a popular choice. Another traditional method of connecting gears to shafts involves shrink fitting, which uses temperature differences […]
Ringfeder complete coupling systems for heavy-duty cranes and hoists
In a new video from Ringfeder, the company explores the types of couplings that excel in crane and hoist applications. Ideal for heavy-duty equipment, barrel couplings are highly robust and torsionally stiff. They also compensate for misalignment and are easy to assemble. The Ringfeder offering includes bore sizes up to 550 millimeters and torques up […]
Ringfeder elastomer jaw couplings
The rotationally resilient couplings of the RINGFEDER series GWE, TNM, TNS, and TNB are puncture-proof and flexible in all directions and therefore compensate for angular, parallel, and axial shaft misalignments of the connected machines. Misalignments can be caused for example by inaccurate assembly, heat movements, or settling phenomena. Avoiding torsional vibration By virtue of the […]
End-to-end coupling solutions for cranes and hoists
When it comes to gearbox coupling applications, some misalignment is unavoidable. This is especially true for cranes and hoists due to their very heavy loads. Fortunately, you can manage misalignment by choosing the right couplings. Here are some of your options specifically for cranes and hoists. Connecting the Gearbox and Cable Drum Recommended for crane-lifting […]
Ringfeder locking assemblies help vacuum pumps in pharmaceutical industries
Of the wide variety of equipment used by the pharmaceutical industry, vacuum pumps are predominant. They are used in research labs and large-scale production units of bulk drugs, active pharmaceutical ingredients, (API) and by intermediates manufacturers. Various pharmaceutical processes, including degassing, vacuum distillation, crystallization, drying, freeze-drying, and sterilization use vacuum pumps. These vacuum pumps ensure […]
Ringfeder couplings for advanced motion control
Check out Ringfeder’s latest video to learn more about its best-of-class coupling solutions for advanced motion control applications, including surgical robots, semiconductor equipment, lab automation, and industrial robots. Used in high-accuracy applications, our elastomer jaw couplings dampen vibration and compensate for radial, axial and angular misalignment. Another option is the company’s metal bellows couplings, which […]
RINGFEDER locking assemblies RfN 7005
Simple and quick assembly and disassembly, complete freedom from maintenance and wear, absolutely backlash-free power transmission: RINGFEDER Locking Assemblies are friction-locked shaft-hub connections manufactured to the highest quality standards. They are suitable for the precise fastening of all types of hubs, e.g. toothed gears, running wheels, and chain sprockets, levers, cam discs, belt and brake […]
Ringfeder couplings for advanced motion control systems
Users already know the important role Ringfeder couplings play in heavy-duty equipment, from cranes and hoists to pumps and compressors. But coupling can also make or break applications requiring advanced, precision motion control — like surgical robots, medical device manufacturing, medical imaging, lab automation, semiconductor equipment, and industrial robots. A Rundown of Ringfeder Couplings When […]
How to save installation time and cut costs with Smart-Lock
For quick, economical gearbox shaft connections, there is the Smart-Lock system, which combines Ringfeder’s Shrink Disc technology with adaptor bushings. In each Smart-Lock set, the cylindrical bushings mate with the solid shaft’s outside diameter and the hollow shaft’s inside diameter. The Shrink Disc locks all components together — creating a perfect hollow shaft connection every […]
How to install a Ringfeder Smart‑Lock
Ringfeder’s Smart-Lock system combines its proven Shrink Disc technology with a set of adaptor bushings — making gearbox shaft connections a breeze. Before Smart-Lock, solid shaft outside diameters and hollow shaft inside diameters needed to be precision machined to exact dimensional tolerances and finishes. Smart-Lock compensates for clearances up to 0.2 millimeters — eliminating the […]
Ringfeder launches new website and consolidates brands
Ringfeder has announced the launch of its new website, which features the same technologies — but now all under the Ringfeder name. By consolidating its brands—ECOLOC, TSCHAN and GERWAH—the company says it can provide users with a simpler, more streamlined product portfolio, enabling the selection of the power transmission device that best fits your needs. […]
Optimum connection between drive and main spindle
Manufacturers set exceptionally high standards with regard to the quality of the connection between the main spindle and the drive of a machine tool: To ensure perfect operation of the machine, the connection must provide zero backlash and must be easy to establish. Furthermore, it must meet essential damping functions and compensate various types of […]
Safe dimensioning of locking assemblies for extreme loads in applications with belt conveyor pulleys
Ignoring induced forces or the faulty design of belt conveyor pulleys can cause high repair costs. Resulting damage may show itself in shaft breakage, axial movement or plastic deformation of the pulley bottom. Apart from that, downtime losses accrue which can quickly amount to several millions. For instance, the capacity of a large ship loader […]
Ringfeder: Locking assemblies for securing rotors in impact crushers
Apart from transmitting the rotor torque, locking assemblies installed in crushers are subjected to further loads such as bending moments and radial impacts. The factors which have to be considered for these applications are briefly described in this article. Please also watch the video and learn how modern impact crushers work. Function principle Impact crushers […]
What are frictional locking assemblies?
If you want a wear-free way to join shaft components, look no further than locking assemblies. These frictional devices take the place of keyed connections that wear and slip over time. Let’s take a closer look at how locking assemblies work — including their advantages over traditional keyways in high-torque applications. What is a frictional […]
Ringfeder Market Talk 5/19: EMO exhibition, digitalization, and more
EMO Hannover 2019: The whole world of metal working Things get hard at the EMO Hannover: or more precisely, it is all about metal working. From September 16 to 21, 2019, more than 2,200 exhibitors will showcase their product solutions to about 130,000 professional visitors from all around the world – seizing the opportunity to […]
Ringfeder locking assembly in a ball mill for cement production
Edited by Mike Santora The Challenge After maintenance engineers had examined the ball mill unit thoroughly, the cause of the problem seemed to be the shaft-pinion connection, or to be more exact, the locking assembly that connected the solid shaft with the pinion. Measurements showed the assembly to be out of tolerance by a whopping […]
Hollow shaft connections without precision machining
Creating the perfect hollow shaft connection in gearbox applications isn’t easy. You need to maintain strict dimensional tolerances between the solid and hollow shafts—a process that requires precise, yet costly machining. Ringfeder’s Smart-Lock set overcomes these challenges. It provides a firm, yet flexible connection with clearances up to 0.2 mm. Thanks to its user-friendly, economical […]
What are the differences between claw and disc couplings
In addition to gear couplings, claw and disc couplings can be used to connect the drive motor and gearbox in crane and hoist applications. Like the gear coupling, these other two options are designed to compensate for angular, radial and axial shaft misalignment: • Claw coupling—Torsionally flexible, these couplings transmit torque via elastic buffers made […]
What are gear couplings and how do they work?
Gear couplings are designed to transmit torque between two shafts that are not collinear. They typically consist of two flexible joints—one fixed to each shaft—which are connected by a spindle, or third shaft. The gear coupling connects the drive motor to the gearbox in hoist mechanisms, but it can also connect the gearbox directly to […]
Couplings in heavy-duty crane and hoist applications
Cranes and hoists are only as good as the components that make them up. One of their key components is the coupling, which is essential to maintaining uptime and enhancing the safety and reliability of your operation. Without the right coupling, your crane or hoist may not function properly, causing your manufacturing process to grind […]
A big “twist” on Ringfeder’s standard shrink disc
Given the range of applications for shrink discs, Ringfeder has always offered a wide range of sizes. But sometimes, engineers may need a larger model than they carry. In these cases, Ringfeder will customize one of its standard shrink discs to fit a customer’s needs—which is exactly what they did for an industrial gearbox company […]
How sweet it is: Coupling assists in sugarcane processing application
By Matheus Mendes The sugarcane industry is one of the most flourishing segments of the Brazilian Economy. With a production of up to 624 million metric tonnes of sugarcane in the 2017 harvest season, the country holds the world record production for both sugar and ethanol from this raw material. Uniting technology in both agricultural […]