Lumberg Adds Two Bus Couplings To Its Lion-Link I/O Systems
February 9, 2010 by CouplingTips
Filed under Industry News
Belden is adding two new bus couplings and six new I/O modules to its range of Lumberg Automation Lion-Link I/O systems. These new products enable users to control electrical drives over Profibus, facilitate networking of intelligent sensors and actors, complete simple retrofitting or upgrading of machines, deliver safety applications and/or decentralise power supplies.
Available with either M12 or M8 connector ports, the new Lumberg Automation modules are designed for ease of installation and plug-and-play startup. In addition, they offer comprehensive diagnostics possibilities, are sealed to IP67 and exhibit high resistance to shock and jarring.
The Lion-Link peripheral I/O system can be used for line topologies of up to 100m in length. The system comprises bus coupling modules for interfacing with higher-level fieldbus systems, including Profibus, Canopen, Devicenet or Ethernet, and protocol-independent I/O modules. A key benefit is that machine manufacturers only need to implement minor hardware modifications when connecting equipment to end customers’ specific communication networks if they use different data transmission protocols.
One of the modules, the 0940 PSL 602 bus coupling module, is designed for controlling electrical drives over Profibus-DP V1. Up to nine 0942 UEM 783 motion drive control modules can be connected to its two Link ports for controlling a maximum of 72 drives.
The motion drive control modules have four outputs that can be configured both for brushless EC and brushed DC, as well as other DC motors. Acceleration, speed and deceleration can be controlled in noncyclical mode.
A third new module is the 0942 UEM 620 I/O Link master module, which provides point-to-point connections for intelligent sensors and actuators by means of the I/O Link protocol. Four ports can be configured as digital inputs/outputs or for communications mode. The module is wired with three-conductor standard cords that can be up to 20m in length. The Profibus bus coupling module enables users to connect up to six master modules. In combination with a Profinet bus coupling module from the Lion-Link family, the I/O Link master module can also be used in Ethernet networks.
The 0940 PSL 603 bus coupling module permits the integration of up to 30 of the 0942 UEM 670 shadow modules in a Profibus network. Serving as inactive secondary components, these modules each provide eight digital I/O connections. They can be activated by means of a ‘hot plug’ function without compromising the higher-level Profibus communication. In this way, lines can also be retrofitted or upgraded when in operation and without the need for additional hardware.
Each of the 0942 UEM 602 and 0942 UEM 612 I/O modules features four digital outputs for an increased output current limiting of 2A per line and a maximum total of 6A. Whereas the 0942 UEM 602 version has standard-type outputs, those of the 0942 UEM 612 version are designed for safety-critical applications up to Performance Level D of EN ISO 13849-1. Amongst others, therefore, this module is also suitable for intrinsically safe actuator control or reliable emergency power-off functions.
The 0941 UNC 601/…M Lion-Link power module is used for decentralised power supplies. It has four ports, two potential circuits and a 10m lead with a conductor gauge of 5×1mm2. This provides for bridging distances of up to 25m without voltage loss, as well as for configuring separate potential groups each with their own fuses.
Hydraulic Coupling No Longer Uses Steel
January 23, 2010 by CouplingTips
Filed under Industry News
When Parker Hannifin, Mainz-Kastel, Germany was looking to replace the steel components of its RSD quick couplings with one single injection molded component that reduced the number of components to be assembled and control the overall production costs, they selected VICTREX® PEEK(TM) polymer.
The RSD series couplings are used to rapidly and easily connect and disconnect the hydraulic lines between a tractor and its various items of equipment (trailer, plough, etc.) without using any tools.
The technology of the RSD coupling allows for a completely safe connection of a male connector, whether pressurized or not, under adverse conditions, such as under a maximum pressure of 250 bar (3626 psi), and withstands a return flow rate that may reach 190 l/min (50.2 gallons/min) and even beyond for a few seconds at a temperature close to 120°C (248°F).
Why Couplings Need Lubrification
January 18, 2010 by CouplingTips
Filed under Featured, Industry News
In an ideal world, multiple components could be produced in a single piece, or coupled and installed in perfect alignment. However, in the real world, separate components must be brought together and connected on-site.
Couplings are required to transmit rotational forces (torque) between two lengths of shaft, and despite the most rigorous attempts, alignment is never perfect. To maximize the life of components such as bearings and shafts, flexibility must be built in to absorb the residual misalignment that remains after all possible adjustments are made. Proper lubrication of couplings is critical to their performance.
Figure 1. Types of Misalignment
MISALIGNMENT
Misalignment can occur as either an offset or angular displacement on two of the three possible axes (Figure 1). The third axis, in the longitudinal direction, is not commonly measured, though errors in this direction can result in excessive thrust loads in a system. For major installations, such as large compressors, wire alignment methods are used. Smaller applications have traditionally used rim-and-face dial indicator readings to quantify and correct misalignment, though optical laser indicators have grown in popularity due to their ease of use and accuracy.In pace-setting maintenance organizations, efforts are also made to compensate for thermal growth that occurs in equipment during operation. All materials (except water) expand a small amount when heated; the amount by which they do so is governed by the material’s coefficient of thermal expansion and the degree to which it is heated. A machine that is brought into alignment at ambient temperature will creep into a position of misalignment as the machinery materials climb or fall to operating temperature.
Attempts are made to preheat or cool equipment to normal operating conditions before performing alignment checks. Alternatively, calculations of anticipated thermal growth can be used to intentionally misalign the drivetrain at ambient temperature so that it may grow into alignment. Whatever precautions are taken to make alignments as precise as possible, some amount of residual misalignment will inevitably remain. Misalignment forces rigid machine components such as shafts to deflect in order to effectively become aligned. This deflection stresses the components, causes vibrations, and distributes higher and uneven loads on the structures that support these elements, such as bearings. These stresses waste energy and can dramatically reduce equipment life and reliability.
Designed properly, couplings can absorb misalignment forces so that more expensive, critical and sensitive components may be saved. While rotating shafts appear sturdy, the bearings which support them are some of the most sensitive precision components in the drivetrain.
Figure 2. Gear Couplings
TYPES OF COUPLINGS
Coupling designs may be divided into four principal categories, each having several specific designs. Solid and magnetic couplings do not require lubrication, but are included here for completeness. Solid couplings are fundamentally rigid structures that do not compensate for misalignment, but do allow two shafts to be joined for the purpose of transmitting torque. Bolted hubs keyed onto shafts are an example of a machine with magnetic couplings. Magnetic couplings allow shafts not in direct contact to be driven together using powerful permanent or electrical magnets. A sealless magnetic drive pump is a common example.Other coupling types are flexible couplings and fluid couplings. Many flexible couplings use fixed-position flexible metallic, rubber or plastic elements, such as discs or bushings, that rotate with the shafts and absorb misalignment. Designs of this type do not require lubrication. Others such as geared, chain, grid and universal joints do require lubrication for performance and longevity. Fluid couplings include torque converters and torque multipliers. These couplings are filled with lubricating fluids that rely on the fluid to transmit torque.
Figure 3. Chain Couplings
FLEXIBLE COUPLINGS
Gear couplings (Figure 2) compensate for misalignment via the clearance between gear teeth. Shaft-mounted external gear teeth on both shafts mate with internal gear teeth on a housing that contains a lubricant. Other designs mount external teeth on only one shaft, mating with internal teeth mounted to the other shaft. Acceleration or deceleration can result in impacts between gear teeth due to backlash from the clearance being taken up on opposite sides of gear teeth. Misalignment will result in sliding relative motion across mating teeth as they pass through each revolution.Chain couplings (Figure 3) operate similarly to gear couplings. Sprockets on each shaft end are connected by a roller chain. Clearance between components and clearance in mating the chain to the sprockets compensate for the misalignment. Loading is similar to that of geared couplings.
External grid couplings (Figure 4) use a corrugated steel grid that bends to compensate for loading induced by misalignment. Grooved discs attached to the ends of each shaft house the grid, which transmits torque between them. Low-amplitude sliding motion develops between the grid and grooves as the grid deforms under load, widening in some locations and narrowing in others over each revolution.
Universal joints are used for maximum allowable misalignment up to 20 to 30 degrees, depending upon the design. They are used extensively for the drive shafts of vehicles to allow the wheels to move with the suspension system. Universal joints use a four-spindled component called the spider to connect two shafts terminating in yokes or knuckles at right angles (Figure 5). Each of the four spider journals is supported by a bearing or bushing contained in one of the knuckles, which allow articulation.
Figure 4. Grid Coupling
FLEXIBLE COUPLING LUBES
Both lubricating oils and greases can be selected to lubricate flexible couplings. Unless specifically noted by the coupling designer, couplings for the majority of industrial components are grease lubricated. Coupling components are protected primarily by an oil film which bleeds from the grease thickener and seeps into the loading zone.Lubricated flexible couplings require protection from the low-amplitude relative motion that develops between components. Other concerns include centrifugal stress on the lubricant (particularly grease), which causes premature separation of the oil from the thickener, poor oil distribution within the housing and oil leakage from the housing.
The motion’s low amplitude, articulation speed and tendency toward a sliding rather than rolling action inhibits the development of hydrodynamic (full-film) lubrication. Greases made with high-viscosity base oils, anti-scuff (EP) and metal-wetting agents are recommended to overcome the boundary (mixed-film) conditions that often exist in flexible couplings. High oil viscosity also slows the leakage rates.
Centrifugal forces in flexible couplings can be extreme, becoming greater with increased distance from the rotational axis. Even moderately sized couplings can generate forces thousands of times greater than gravity (referred to as Gs). Grease makers put a high priority on formulations that resist premature separation of oil and thickener due to the high G forces.
Figure 5. Universal Joint
FLUID COUPLINGS
Fluid couplings transfer momentum from the input shaft to a fluid and then to the output shaft when transmitting torque. Misalignment is accommodated solely by clearances between the moving parts. The small clearances don’t provide much room for error in alignment. However, it is possible to effectively compensate for shock loading and high-torque starting loads as there is no solid connection between input and output shafts.In fluid couplings, an impeller attached to the input shaft accelerates fluid within the coupling as it spins, much like in a centrifugal pump. This fluid then hits the vanes of the output shaft’s runner, transferring its momentum as the runner accelerates. It will accelerate until it approaches the speed of the input shaft, but will never actually reach it. The difference in speed between the input and output shafts is known as slippage. Of course, frictional and viscous drag must be overcome before the output shaft can rotate. The minimum input speed required for this condition is known as the stall speed. Equipment with large static loads, such as a steam or gas turbine, would use a fluid coupling to minimize the initial stress on the driving shaft.
Shock loads on the input side, such as starting torque, are never created. The speed of the input shaft is never restrained. When the stall speed is exceeded, the output shaft will begin to accelerate, but will do so at a constrained rate due to its moment of inertia (resistance to angular acceleration). Slippage is created as the runner accelerates to the speed of the input, dissipating excess energy through viscous heat generation in the fluid. Output side shock loads will be similarly dissipated, even if the output shaft should completely stall.
Torque converters and multipliers are special applications of fluid couplings that allow the input torque to be modified before transmission. These designs operate fundamentally by the same principles, but are mechanically much more complex.
FLUID COUPLING LUBES
The dissipation of energy that makes fluid couplings so tolerant of shock loading creates the potential for rapid and extreme increases in fluid temperature. The energy dissipated during stall and slip is converted to heat through the viscous shearing of the fluid (fluid internal friction). In extreme applications, the fluid temperature can rise above the normal 200-degree Fahrenheit operating temperature in less than a minute.Oxidation and thermal degradation resistance are important qualities of oil used for fluid couplings because of the potential for drastic temperature increases. Similarly, a high viscosity index (VI) is also useful to prevent severe decreases in operating viscosity at temperature spikes and excessively high operating viscosity at low-temperature conditions.
Low-viscosity fluids are ordinarily used in these applications to reduce the power lost to heat due to fluid friction. Fluid coupling viscosities may fall between 2.5 to 72 centistokes (cSt) at 40 degrees Celsius. For fluid couplings designed to operate at high temperatures, viscosity limits may be given at 100 C.
These fluids must also resist foaming due to the severe agitation caused by the impeller’s movement and its impact upon the runner vanes. Rust-protective properties help preserve the coupling’s metal components. Hydrocarbon-based fluids are superior in this regard to other fluids, but their performance can be improved through rust-inhibiting additives. Seal compatibility is also important for long-life usefulness.
RECOMMENDATIONS
Acceptable life can be expected from any of these devices only if proper maintenance is performed. Lubricant levels and quality must be verified through periodic checks. Additional lubricant may be needed to compensate for leakage. Periodically flush and change the lubricant to remove harmful by-products of lubricant breakdown, to replace oil-depleted grease or to refresh the additive population. Gear couplings require perhaps the most maintenance. Typical relubrication intervals are six months to one year, depending upon application severity and experience.All maintenance tasks must be performed with attention paid to contamination control. The sliding contact suffered by many couplings indicates that abrasive three-body wear caused by particulate contamination could be particularly damaging. Improper removal of solvents used to clean couplings during inspections and flushing operations can lead to significant viscous thinning of the lubricant in operation or detrimental reactions with grease-thickening materials.
Couplings will endure when the demands placed on them are reduced. Consider the first line of defense to be a minimization of shock loading, including hard starts and sudden load reversals. Sometimes operational demands make this impossible. The principal source of loading in coupling systems can be controlled to a great extent, however. Proper alignment is considered a high-priority, precision maintenance functions. Use vibration analysis or thermography during operation to identify couplings that are not in alignment, as even the sturdiest foundations shift over time. Certainly, check for proper alignment whenever intrusive maintenance or repairs are performed on the coupled components.
Leadership in Engineering
January 15, 2010 by CouplingTips
Filed under Industry News
Leadership in Engineering
This is the 3rd annual Leadership event announcing the winners in the 2009 Leadership Awards Program. The Design World User Community have cast their votes and we are pleased to announce the winners.
ADVANCED MATERIALS
Da/Pro Rubber is a custom manufacturer of precision rubber, TPE, and plastic molding products. The proprietary Da/Pro process adjusts for rubber compound and rubber part configuration variables so that it can produce high tolerance parts of consistent quality. The company offers complete in-house capabilities from design for moldability, rubber compound development, lab testing, mold construction, subassembly, and quality assurance.
Digital Manufacturing
Proto Labs’ quick-turn Protomold® injection molding and First Cut® CNC machining services are the fastest in the world at providing design engineers with real parts based on their 3D CAD models. We achieved this unique ability by applying proprietary software and parallel processing technologies to the automation of standard manufacturing processes, so engineers can finally have it all : real parts in as little as one day.
Electrical & Electronic
Since 1976, Glenn Taylor’s vision of an enterprising engineer has been our guiding force. Our goal is to design and manufacture standard industrial control products that meet or exceed customer and industry specifications for quality and operation. We engineer more features, more functions and more flexibility into our products, and we are able to offer a lifetime warranty for them.
Fastening & Joining
Bal Seal Engineering, Inc.’s original product was a plastic ring with a groove to house a coiled spring. Today, the company’s patented canted coil spring energized PTFE is at the core of its product offerings. Bal Seal offers custom-engineered sealing, connecting, conducting, and shielding products for medical electronics, medical device aerospace/defense, energy management, automotive, and industrial applications.
Fluid Power
Norgren’s vision is to create competitive advantage for its customers. By exploiting the potential of motion and fluid control technologies. For Norgren customers this means better results, faster/more efficient machines, improved machine performance, increased reliability/uptime and lower cost of ownership. Application specific solutions frequently involve integrated or modular combinations of actuator, control valve and air preparation technologies. Within the field of motion control Norgren develops solutions for automation applications and within the field of fluid control Norgren combines proven brands to offer solutions for handling air, water, oil and other fluids.
Mechanical
Arrow Gear Company is among the most technologically advanced gear manufacturers in the world. With a facility of over 145,000 square feet, Arrow is equipped for a full range of precision gear machining, heat treating and inspection capabilities for spiral bevel gears, spur and helical gears, curvic couplings – as well as complete gearboxes.
Arrow has earned a reputation for providing high precision gears to the global market for a wide variety of aerospace and commercial applications.
Arrow’s advanced technologies reach beyond machine tools alone. Arrow is equipped with design and development capabilities that are on the leading edge of the industry. Utilizing Gleason CAGE, GAGE, MINIGAGE, Finite Element and Fully Loaded TCA software, Arrow engineers can create computer models which accurately predict gear design performance. This process for contact pattern development is dramatically more efficient than conventional methods.
Motion Control
PBC Linear is a leader in providing linear and rotary solutions, specializing in everything from out-of-the-box components, to mechanical sub-assemblies, to complete linear systems. PBC Linear’s team of expert engineers draws experience from years of mechanical and design engineering both in the classroom and in the field. Their skilled staff, sophisticated tools, and innovative products create long lasting solutions for the toughest motion control problems.
Software
COMSOL Group provides software solutions for multiphysics modeling. A fast growing engineering software company with a proven track recor, Comsol was founded in July 1986 in Stockholm, Sweden, and has offices in Denmark, Finland, France, Germany, The Netherlands, Norway, India, Italy, Switzerland, United Kingdom, and U.S.A.
Switches & Sensors
MTS Sensors, a division of MTS Systems Corp., is the global leader in the development and production of magnetostrictive, linear-position and liquid-level sensors. Using MTS’s patented Temposonics® technology, the Sensors Division is continually developing new ways to apply magnetostrictive sensing technology to solve critical applications in a variety of markets worldwide, including steel, wood, plastics, metalworking, automotive, and off-highway. It also applies megnetostrictive technology to the packaging, oil, gas, food and beverage, and medical industries. MTS Sensors Division has facilities in the U.S., Germany, and Japan, and is an ISO 9001 certified supplier committed to providing innovative sensing solutions that deliver customers with reliable, cost-effective position-feedback devices.
Test & Measurement
Omega is a major US company that manufacturers more than 80% of its product offerings in house ─ and this percentage is continuously increasing. At a time when “outsourcing” seems to be the foundation of many US manufacturers, Omega Engineering, headquartered in Stamford, Connecticut, remains a notable exception. Omega enjoys this leadership position because it strongly advocates process automation to achieve high productivity and create quality products. When commercial equipment is used, in-house automation handles the input and output processes. Omega’s automation engineers are among the most talented, and it has invested substantially in the model shops and labs needed to support them. Working with an equally talented staff of software engineers, they produce a wide range of custom automation equipment.
Things to Consider When Choosing Flexible Shaft Couplings
December 9, 2009 by CouplingTips
Filed under Flexible, Industry News
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.
Silicone Insert Couplings from Sterling Instrument
November 9, 2009 by CouplingTips
Filed under Featured, Industry News, Rigid
New Hyde Park, NY — A new series of silicone insert couplings from Sterling Instrument (ISO 9001:2000+AS9100B Registered Manufacturer) features electrical isolation and no backlash. These metric couplings, identified as the S54HSAM… (clamp type) and S5PSAM… (set screw type) Series are stocked in 5 different bore sizes ranging from (6 mm to 16 mm).
These couplings have aluminum hubs with either set screws or clamps for fastening to shafts. The insert is silicone 40 ShA. Operating temperature ranges from -50°C to +150°C. They range in length from 26.5 mm to 57 mm. Their maximum speed is 5000 rpm.
They can be used in various applications and are especially able to accommodate tight or skewed connections. Quotes, online orders, available stock, and 3D CAD Model downloads are available at our new eStore at: www.sdp-si.com/eStore. SDP/SI offers over 1000 different types of couplings including inch and metric: magnetic, flexible, rigid, oldham, bellows, flexible shaft, spider type, Fairloc® shaft type, helical, slit-type, and neoprene flexible type couplings.
Sterling Instrument
www.sdp-si.com
Servo Torque Limiters
October 6, 2009 by CouplingTips
Filed under Featured, Industry News, Torque Limiters
Protection of an electromechanical system from torque overload is often assumed to be guaranteed by the current limits set in the drive parameters. But in the case of hard stops, impacts and other situations where overload occurs very rapidly, sufficient energy to do damage often exists in the rotating inertia driving the load.
R+W servo-rated torque limiters are accurate to +/-5% release torque and positively disengage the motor or gearbox shaft in 1-3 milliseconds. Patented pre-loads and a specially designed spring system remove backlash and guarantee a very low profile for higher release torques.
Oilfield Encoders Eliminate Barriers
September 28, 2009 by CouplingTips
Filed under Featured, Industry News
Gurnee, IL – Dynapar announces the introduction of the EN series of oilfield encoder suitable for use in Zone 1 hazardous locations. What makes the new incremental encoders unique is their ability to operate in hazardous areas without the need for intrinsic safety (I.S.) barriers. Removal of the I.S. barrier reduces system cost, simplifies wiring, and provides for a more permanent installation. Also, faster data acquisition rates are possible since losses through the I.S. barrier are eliminated. The new encoders feature Ex ia mb e IIC T4 ATEX certification, along with an industry-leading -50 to +100C operating temperature range.
Field-Friendly Concept
The new harsh duty incremental encoders are designed with “Field-Friendly” characteristics in mind-compact, easy to mount, easy to wire, and reliable in harsh conditions. These traits are routinely designed into NorthStar brand heavy-duty encoders, but become much more challenging when Zone 1 certification is required. The new encoders incorporate an increased safety interface to eliminate the need for external I.S. barriers, and use encapsulated electronics to prevent unwanted component contact with flammable gases. As a result, the encoder circuit isn’t limited in electrical energy the way standard I.S. encoders are, therefore allowing for longer cable runs and improved signal-to-noise ratio. The EN series also features a field wire-able terminal block inside a conduit box with common ¾” NPT entry. Optional ATEX-rated glands for armored or non-armored cable use are also available.
Rugged Design for Oilfield Motor Use
Starting with Dynapar’s proven phased-array ASIC sensing technology, the encoders feature a rugged design with wide sensing gap, mechanically captured bearings, and non-glass code discs. The result is a robust incremental encoder that can handle excessive shock and vibration that would destroy more fragile industrial encoders. In addition, the housing receives hard anodizing to resist corrosion in less-than-perfect operating conditions. The EN42 variant is configured with a stainless steel hollow shaft and dual-split clamping collar for motor mounting. The standard anti-rotation arm is a heavy duty 5/16″ threaded tether rod with swivel ball ends for reliable installation. The EN44 model mounts directly to an IEC motor flange and incorporates an innovative isolated flex coupling. This special coupling not only isolates the encoder electrically, it compensates for motor shaft run-out and end-play.
Centa’s Quality Assurance Excels
September 2, 2009 by CouplingTips
Filed under Featured, Industry News
CENTA is the first company worldwide to which Germanischer Lloyd (GL) has conferred the responsibility for alternative product certification of type-approved couplings. In the future, CENTA will have the authority to carry out acceptance testing and final stamping of those couplings that have previously been classified as approved types. These tests must be performed in accordance with the “Alternative Product Certification,” a modular certification system developed by Germanischer Lloyd (GL). The approval becomes valid by their joint signatures on the appropriate product certificate.
CENTA is one of the leading manufacturers of flexible drive components worldwide and has been supplying couplings for marine applications for more than 20 years. In 1990, the company’s quality management system was first approved by DIN ISO 9001. All subsequent audits were passed successfully, and recently the classification society Det Norske Veritas (DNV) attested that the coupling manufacturer supports a higher-than-average quality management system.
Several international classification societies, such as the Det Norske Veritas (DNV), Nippon Kaiji Kyokai (NKK), and the Maritime Register of Shipping (MRS), have granted CENTA the authority to use their approval stamp on its series couplings. CENTA has a stock of approximately 65 approved types. In 2007, roughly 2,000 certifications by several classification societies were carried out on CENTA’s premises. In the future, CENTA will be the first manufacturer worldwide to be granted approval by Germanischer Lloyd (GL) to perform acceptance tests on its own flexible couplings up to 100 Nm.
Germanischer Lloyd (GL), one of 10 internationally recognized classification societies, has developed technology and quality standards for more than 140 years–standards that ensure the safety of more than 6,500 ships all over the world. “We have maintained close cooperation with several classification societies for more than 20 years”, says Gerhard Kirschey, founder of CENTA Antriebe Kirschey GmbH. “We continually strive to improve the quality of our products and processes. Approval by Germanischer Lloyd for carrying out acceptance testing of our couplings on our own, in-house, indicates that our quality management system is on the right track”, Kirschey explains. “We are very proud of this sign of confidence and confirmation of our efforts, which are supported by our employees’ high commitment level.”
Test bed coupling Centax-Test
August 18, 2009 by CouplingTips
Filed under Industry News
Growing requirements for performance, emissions, consumption and service life of modern engines are the great challenges facing engine manufacturers today. Investment in research a
nd development has grown considerably. With highly flexible CENTAX-TEST, CENTA provides a suitable test bed coupling for such tasks. Due to its torsionally soft characteristics, vibrations in the drive train are reduced, while the couplings compensate axial, radial and angular misalignments. This conserves both the test bed and test sample, thereby prolonging operating lives. Moreover, all values established under such conditions provide a much more accurate picture. Whether in combination with a gasoline or a diesel engine, whether for new designs or for monitoring serial production: the couplings provide the optimum conditions for test purposes.
