Experts in Mechanical Power Transmissions. Leaders and innovators in the design and manufacture of flexible couplings for all types of Diesel-driven mechanical power transmissions. A highly cost-effective engine to pump connection. Adaptable to a range of SAE sizes. For optimising pump speed and engine efficiency, CENTA Belt Boxes are designed in various ratios for use in a variety bof drive applications.
Splined shaft replacement, owing to distortion and fretting damage and the associated stress on bearings and seals, is no longer an inevitable maintenance cost.
One or more radial set screws exert an opening force on the axial slot, which translates into a clamping force locking the hub securely around the splined shaft, as the stress pattern on the image demonstrates.
Providing that torque recommendations are adhered to, loosening the set screws will immediately release the hub for disassembly. The set screws never touch the shaft so there are no dents or burrs on the spline profile.
Pump Mounting Kits. The latest pump mounting kits are designed for ease and speed of fitting; their integration with single piece flexible couplings makes assembly much simpler. They are lightweight in structure yet very strong and provide highly efficient performance. Stocked Components. Flexible couplings and pump mounting kits for all types of Diesel Hydraulic drives. Housing plate extension rings are included where necessary. All rights reserved.All items are supplied in soft condition and may be induction or case hardened.
Buy now! In some instances undercut chucking registers may be present at one end. A centre is provided at one end.
Keyed shaft end for drive attachment. Use with our standard splined hubs or splined couplings. Buttress end is left as soft as possible for later machining and welding.
For more information download the page from our catalogue. Check stock availability online. Precision Splined Components. Dynagear Splined components, couplings, overhung load adaptors and hydraulic pump drives. Dynacool Highly efficient air cooled package oil coolers. AC or DC voltage models. Durst Gear drives for use with multiple hydraulic pumps and motors. Hub City Right angle bevel, Tee, worm reduction drives and agricultural accessories. Technodrive Multiple hydraulic pump drives, marine drives and clutches for diesel engines.
The shaft coupling is the connecting element between the electric motor and the pump hydraulic system. Slip-free shaft couplings employed in centrifugal pumps are divided into rigid and flexible shaft couplings.
Rigid shaft couplings are mainly used to connect perfectly aligned shafts. The slightest misalignment results in considerable extra stress on shaft couplings and adjoining shaft ends. Shaft couplings to DIN are resilient flexibleslip-free connecting elements fitted between driving and driven components, capable of partially compensating axialradial and angular misalignment and shock loads. See Fig. Flexibility is usually achieved by the deformation of dampening, rubber or metal-elastic spring elements; their service life is heavily dependent on the extent to which misalignment has to be compensated.
Different flexible shaft coupling designs are available. If shaft misalignment occurs between the driver and the pump as a result of, for example, temperature fluctuations in the fluid handled on heat transfer and hot water pumpsthe double-cardanic coupling type design is often employed.
Gear couplings are flexible shaft connections for positive torque transmission and are particularly suited to compensating axial, radial and angular shaft offsets. The design principle employed by curved-tooth gear couplings see Curved-tooth gear coupling prevents edge pressure when gears engage in the case of angular and radial offset, making these couplings almost wear-free.
The double-cardanic operating principle of curved-tooth gear couplings ensures that the reaction forces from angular and radial offsets are negligible and periodic fluctuations in the angular velocity do not occur.
A coupling with spacer sleeve see Back pull-out design allows the shaft seal and pump bearing assembly to be removed without removing the pump casing and the drive. If precise data on the influence of the frequency of starts and the ambient temperature is not available, the load can be calculated on the basis of factors specified as reference values.
No fixed value is laid down for the ratio of maximum torque to operating torque. This means that all coupling types can be taken into consideration according to their specific suitability.
The calculation of the loading by torque shocks relates therefore to the maximum torque see Starting torque.
The calculation method for sizing flexible couplings given in DIN only applies on the assumption that the coupling is the sole torsionally flexible element of a rotor, reducing the installation to a linear two-mass system.
In all other cases it is necessary to carry out a vibration calculation. Search A-Z Suche nach. Shaft coupling The shaft coupling is the connecting element between the electric motor and the pump hydraulic system.
Examples of rigid shaft coupling types Sleeve coupling Muff coupling Serrated splined coupling Split muff coupling DIN Disc coupling Flange coupling Gear coupling Flexible shaft coupling Shaft couplings to DIN are resilient flexibleslip-free connecting elements fitted between driving and driven components, capable of partially compensating axialradial and angular misalignment and shock loads.
Pump Lexicon. Sewage pump. Shaft efficiency.When selecting a new pump, the selection of the coupling is one of the most overlooked components. It is, after all, one of the least expensive pieces of the entire assembly.
But this doesn't mean it's one of the least important. Pump couplings connect the pump shaft and motor shaft together in order for the motor to efficiently transmit power to the pump. Like everything else on the pump, selecting the right coupling for the application can have positive or negative impact on the pump's lifetime performance. To help you make the right choice, here are the pros and cons of the four most common couplings we see in pumping applications.How a Fluid coupling works
Elastomeric couplings are the most common coupling used today. They're found on almost every small to mid-sized pump installed due to their quick and easy installation and their innate ability to absorb all types of shock, misalignmentand end float.
There are many different manufacturers, each with their own twist in the design, but the concept is the same. Elastomeric pump couplings consist two metal hubs that attach to both the motor and pump shaft.
OMT Flexible Couplings
Spacer designs are sometimes needed if a large distance between shaft ends exists. There's no maintenance necessary with this coupling, as it does not need lubrication. Oftentimes the only piece that fails is the insert, which is relatively inexpensive to replace. The elastomeric coupling is a great choice for many applications, but doesn't do well with very high torque applications and can also be sensitive to chemicals and high temperatures.
Grid couplings are most likely found on big pumps with large motors and high torque applications. These couplings transmit torque through a spring set.
They are stiff, inflexible, and cannot accommodate misalignment without imparting high radial loads on the bearings. Grid couplings require regular lubrication. To do so, the pump must shutdown so the coupling can be disassembled. Regardless of proper lubrication, the metal to metal contact that comes with grid couplings causes inevitable wear. As they wear they lose their dynamic balance. Replacing these types of couplings requires moving the equipment, replacing and realigning.
Though this pump coupling can require more maintenance hours and lost production time than the elastomeric coupling, the grid design is essential for high torque applications.
Disc couplings are ideal for medium to high torque applications in marine, power generation, API and critical process industries. They are best applied where some torsional rigidity needed, but some allowance for misalignment is also required. Disc couplings are more accepting of high torque than elastomeric couplings and are generally more expensive. The disc coupling does not need lubrication, so no maintenance is required. It can be inspected while running using a hand held portable strobe light.
If it does need repair, it can be rebuilt onsite without removing the shaft hubs. If properly aligned, the life expectancy of the disc coupling, according to John Crane, is about 20 years. The gear coupling is the oldest coupling design, dating back to the s. Although the design is quite old and is far less common than some of its newer counterparts, it is still found in a few applications. Gear couplings are able to transmit high torque at high speeds, making them ideal for very large pumps and motors.
The gear coupling is mechanically flexible and allows for some misalignment between the shafts. It consists of two hubs with an external gear, and two outer sleeves with internal gears.Thank you Your Enquiry has been sent successfully.
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For more than 70 years, Guardian has been designing and manufacturing world-class couplings and other power transmission components. Utilizing advanced manufacturing technologies and processes, Guardian provides highly-reliable coupling and component solutions to meet the most challenging industrial application requirements. Flywheel Couplings. General Purpose Couplings.
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Solutions For The Marine Market. Guardian is a premier manufacturer of world-class couplings and other highly reliable power transmission components For more than 70 years, Guardian has been designing and manufacturing world-class couplings and other power transmission components. Products Flywheel Couplings. Contact Us. Quick Links. Follow Us At.Made for motion — KTR has been developing power transmission components for mechanical and plant engineering under this slogan for more than fifty years.
As a leading manufacturer of high-quality power transmission technology, braking and cooling systems, and hydraulic components, KTR is a dependable partner for any company that wishes to keep moving forward. Clock off earlier! Practical little helpers for KTR product design and configuration, as well as a CAD library and installation instructions are available for download to assist you in your work.
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These reference projects reveal how KTR products help our clients with impressive applications. As a leading manufacturer of high-grade power transmission technology, braking and cooling systems, and hydraulic components, KTR is a dependable partner for any company that wishes to keep moving forward.
On land, on water and high in the air: KTR products are a driving force wherever it comes to keeping things in motion. Standing still is definitely not the KTR way of doing things. We come up with over 20, new developments and product variations year after year. You will find a few examples which KTR is particularly proud of here:. Our products.
Power transmission technology. Torque limiters. Torque measuring technology. Clamping sets and Precision joints. Active floating caliper brakes. Passive floating caliper brakes. Yaw brakes. Rotor Lock. Bellhousing and accessories. Tanks and Accessories. Temperature control and monitoring. Installation instructions. Tailor-made solutions made of aluminium. At the end of the s KTR extended their cooler portfolio Read more. New cooler production plant in China. As ofwe have been manufacturing coolers for the world