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Invented decades ago but still in use today, the original Hirth coupling from Voith Turbo meets the combined requirements of modern engineering:
- Lightweight design
- High strength connections
We offer a complete range of services to meet almost any requirement:
- Standard rings
- Toothed rings to customer specifications
- Serrations on customer components
With these self-centring, radial face tooth connection, you can precisely connect shafts, discs, wheels and cranks.
Needless to say, we will also support you in the design process and with the calculations for the Hirth serration / coupling. We have access to effective simulation tools for performing the calculations.
Applications for Hirth couplings:
- Machine tools (particularly rotary indexing tables, turret heads and pallet changers)
- Turbo compressors
- Metrology
- Robotics
- Nuclear technology
- Medical technology
- General engineering
- Wind power plants
- Marine propulsion (propellers, shaft drive chains)
- Engines (crankshafts)
- Gas turbines
- Aviation (propellers, turbine blade fixings)
- Plastic machines
- Rail transmissions
- Large scale gearboxes
- Rolling stands / rolling mills
- Universal joint shafts
- Safety couplings
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For more than 25 years we have successfully been supplying shaft couplings for ships and other non-positive shaft couplings in various designs for the construction of motors and gearboxes and plant engineering. Our range includes designs with shaft diameters of up to 250 mm. Our customers benefit from the many years of experience in this field.
Rigid couplings from WEISS are available as sleeve couplings and flange couplings, both in a steel or saltwater- proof design. In addition, we also offer flywheel flanges as joining elements for diesel engines.
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RIGIFLEX®
- torsionally rigid and free from backlash
- positive power transmission
- negligible restoring forces in cases of spatial displacement
- balanced, synchronous operation, no maintenance, no wear
- max. torque = 400.000 Nm
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Torsionally Rigid Shaft Couplings - High torsional spring rigidity | Extremely high alternating torques | Large variant range | Low mass inertia | ATEX Conform available
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Nor-Cal's ASA flanges are manufactured from specially treated 304 stainless steel. These flanges mate with standard 150 lb. ASA flanges or 150 ANSI flanges. They are available from stock for standard tube sizes from two to 12 inches. Larger sizes are available upon request. Nuts and bolts are used to apply pressure between the mating flanges and a seal is effected when a Viton-A® O-ring is compressed. ASA flanges can be baked to 204°C and have a vacuum range of up to 10-8 Torr. Besides being sold separately, they are available as standards on nipples, adapters, tees, crosses, traps, elbows and valves.
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Cross Shaft Clamping Elements, by means of frictional forces, provide connection of all types of transmission equipment to their respective shafts, enabling transmission of both torque and axial thrust loads. Precision tapered thrust cones within the clamping elements create high pressure between shaft and hub to securely fasten pulleys, sprockets, gears etc. Stresses in both hub and shaft are similar to heavy press fits, however, the actual stresses are easy to calculate; and the hub can always be easily dismantled without damage to it or the shaft; only a torque wrench being required for both assembly and disassembly.
Precision transmission of torque with no backlash is obtained with shaft clamping elements, without the need of tight manufacturing tolerances of mating components. Simplified designs can enable manufacturing cost reductions, coupled with easy assembly and disassembly.
Cross Shaft Clamping Elements provide an alternative method of connecting hubs to shafts to:-
Tapered Bushes, Hydraulic Clamping Systems, Fine-bored Hubs, with Precision keyways & Locking Setscrews ,Heavy Press Fits & Welded Components.
The following types are available:-
RCK 15 - RCK 13 - RCK 16 - RCK 70 - RCK 71 - RCK 80 - ACE 81 - RCK 61 -
ACE 54 - CCE 55 - RCK 40 - RCK 45 - RCK 11 - RCK 50 - RCK 19 - RCK 95
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Rotation is transmitted through a central disc that slides over the tenons on the hubs under controlled preload conditions to eliminate backlash. Discs and hubs are available in different materials and configurations to suit different applications. These couplings provide generous radial compensation and easy maintenance.
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Lovejoy, Inc is a world leader in the manufacture and sales of standard and specialty couplings. The company offers more than 20,000 couplings of different
styles, shapes, and sizes to help meet the needs of virtually every major industry. Styles include Curved Jaw, Straight Jaw, Gear, Grid, Torsional, Motion Control, Uniflex, Deltaflex, S-Flex, Beam, Bellows, and Disc.
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Rating:
- Torque [Nm]: 80 - 144000
- Speed [min-1]: 1500 - 13900
Geometry/dimensions:
- External diameters up to [mm]: 69 - 645
- Bores up to [mm]: 325
Transmission element:
- Type: Tensioned multi-discs
- Material: Stainless spring steel
Types with:
- Flange connectors
- Jackshafts, including in shortened version with internal hubs, available as optional flange-mounted version.
Note:
Available as API 610 version on request, with list of exceptions including API 671.
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Standard sizes are available as small as 50 mm in diameter and as large as 1500 mm in diameter. 3 piece Hirth gears are available as well as custom designed gears.
Milling of Teeth
The gears are rough machined, thermally annealed, semi-finished machined with a roughing of the Hirth Teeth and finally thermally stressed relieved.
Grinding of the Teeth
The diameters and faces are rough ground with the teeth being induction hardened to a RC58 +2 surface hardness using Danobat CNC grinders.
Grinding of the Surface
The gears are precision ground again on their faces, both inside and outside diameters using ELB and Voumard grinders.
Final Grinding & Inspection
The Hirth teeth are semi-finished ground, unclamped and then reclamped for a final ground holding extreme accuracies on new Magerle CNC grinder.
Matching Hirth type face gears are ground parallel to .002mm (.00008") or better using ELB grinders and inspected on Rank Taylor Hobson and Sip Mul 300 measurement machines.
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The scientist Blaise Pascal formulated the principle of pressure propagation in liquids many years ago:
”A liquid confined in a vessel which is subjected to pressure distributes the pressure uniformly upon the walls of the vessel. ”
ETP has explored the many positive qualities in this principle, developed it further and applied it to the hub-shaft connections.
”A hydraulic pressure medium confined in a double-walled sleeve is pressurized (with screws/pistons or with an external pump). The pressure is distributed evenly along and around hub/shaft. The double-walled sleeve expands uniformly and gives an even contact pressure against shaft and hub ”.
The ETP-Principle works because of the hydraulic system: compact design, fast mounting, easy to position, good runout, does not damage the contact surfaces and is easy to dismantle. These qualities are important today and will be even more important in the future.
With increasing requirements on down sizing the machines, better runout/balance, increased machine speeds, shorter downtime for service and increased precision, is why the ETP hydraulic hub-shaft connections are choosen for more and more designs.
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ETP-HYLOC, due to its robust design, is ideally suited to work in difficult environments and heavy operations like steel rolling mills, process industry etc. An interesting application, among many, has been fastening of rolls to shafts. ETP-HYLOC is fast to mount, has good concentricity and can take high radial loads.
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ETP Transmission AB is specialized in development and manufacturing of high precision hydraulic locking devices.
A new hydraulic hub-shaft connection assortment of the more common ETP-Products are now introduced in stainless steel.
The demand from the food and process industries is increasing for stainless steel hub-shaft connections, surface coatings and plating are no longer sufficient.
The three most common types of the ETP-Products, ETP-CLASSIC, ETP-MINI and ETP-EXPRESS, are now available as standard items.
ETP-CLASSIC Type R, recommended for all normal needs.
For shaft sizes from 15 to 50 mm.
ETP-MINI Type R, for small shafts with sizes from 6 to 14 mm.
ETP-EXPRESS Type R, especially suitable for applications where adjustments
of the hub are made frequently or because of the need for radial access.
For shaft sizes from 15 to 50 mm
All surfaces exposed to the environment are made of stainless steel. In for example food processing this meets essential requirements.
Choose, for your application, the optimum hub-shaft connection in stainless steel
from ETP.
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Misumi is the NO 1 supplier of over 500,000 standard and customised components for Mechanical Factory Automation/Special Purpose Machinery, Press Dies and Plastic Mould. We delivery components europewide in averagely 6 – 8 days GUARANTEED DELIVERY from the day of purchase, stock items available from 2 days delivery.
Misumi components are different in that they can be configured to your need using our unique part coding system. Dimensions, materials and special machined requests can all be selected within the misumi system enabling engineers and designers to achieve a configured parts as standard with no extra machine costs. Standard items are also available via the catalogues.
All components can be designed using the Misumi CAD portal . Compatible with industry wide packages a designer can configure our parts at the touch of a button in up to 0.01mm, and download in seconds saving valuable design time, registration required.
To receive our extensive catalogue and save valuable time and money, visit our website or request yours today by clicking the request banner.
MISUMI – Precisely what you need.
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BoWex® FLE-PA
- Torsionally rigid flange coupling
- Application: hydrostatic mobile hydraulics
- Available up to an engine power of 500 kW
- Flange dimensions according to SAE - J620
- Nominal sizes from 6 ½“ to 18“
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ROTEX®
Torsionally flexible jaw-type coupling
Axial plug-in, good dynamical features
Failsafe, vibration reducing
Max. torque: 70,000 Nm
Max. bore diameter: 200 mm
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KBT
Application:
- Main Hoist, Boom Hoist, Gantry
Advantages:
- Resistant to high temperatures
- Low wear caused by special formed teeth
- Brake disc replacement without
_axial drive displacement possible
Technical data:
- Type: Gear Coupling
- Axial displacment up to 1,5 mm
- Speed up to 2200 min-1
- Cont. transfer torque rate up to 9500 Nm
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The product range covers flexible and highly flexible couplings, gear couplings, all-steel couplings, fluid couplings, clutches and torque limiters.
N-EUPEX (pin coupling) up to 62,000 Nm
BIPEX (claw coupling) up to 3,700 Nm
RUPEX (pin and bush coupling) up to 1,300,000 Nm
ELPEX (ring coupling) up to 90,000 Nm
ELPEX-S (rubber disk coupling) up to 40,000 Nm
ZAPEX (gear coupling) up to 7,200,000 Nm
ARPEX (all-steel coupling) up to 1,500,000 nm
FLUDEX (fluid coupling) up to 1,500 Nm
PLANOX (clutch) up to 30,000 Nm
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The motion control market segment is unique by itself where it is all about small, precision and repeatability. Lovejoy has done it right by addressing these distinctive needs with its expanded line of motion control couplings, in a variety of different styles, including Beam, Oldham, Mini-Jaw, Bellows, Mini-Soft, Mini-Disc and Curved Jaw.
With a wide selection, Lovejoy motion control couplings spans multiple market segments with zero backlash requirements, including printing, pharmaceuticals, semiconductor, packaging, robotics and metal cutting machine tools, to name a few.
For harsh environments, maximum temperature tolerances on some styles reach 300F. High-speed operations can look to the GS Curved Jaw mini- coupling, with a maximum 31,800 RPM. While the Bellows clamp style coupling specifically addresses higher torque and bore capacities. Companies will find the Lovejoy motion control coupling line is competitively priced, to help OEM’s and other businesses maintain a stable price structure in an increasingly challenging economic environment.
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The 2" coupling size probably covers the most diverse selection of applications in the Todo-Matic family. Available in a range of material and connection configurations, Todo-Matic 2" is designed for rapid and safe transfers. Offshore chemical dosing, pharmaceutical feedstock and aggressive chemical vapor transfer are just some of the challenging applications Todo-Matic couplings see on a daily basis.
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Couplings of type series HK..
are particularly used for incremental and absolute encoders for high requirements to be met concerning precisce angular transmission free from play - torsion rigidity.
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Zero-Max's New ServoClass Couplings are specifically designed to meet the precision positioning requirements and high reverse-load characteristics common to many of today's AC and DC servomotor applications.
Aided by Finite Element Analysis, the flexible discs accommodate higher torque, high speed and misalignment without premature failure due to fatigue or shock loads. In addition, ServoClass Couplings' one-piece assembly and their lightweight make them the ideal solution for a variety of precision servomotor applications.
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Actuated wave hub connection with high truth of running
SPIETH printing cases are better feather-hard wave hub connections with a truth of running of 0,01mm or. Constructed after the proven SPIETH Kraftschlussprinzip the printing cases have high security forces when homogeneous demand the connecting units. Harmful stamping due to local voltage peaks are avoided. By an axial manipulation, alternatively in an integrated way or externally, steel diaphragm radially against hub drilling and wave are pressed and it develop a closed force river between the printing case and the connecting units. Due to the adding play a simple assembly as well as disassembly without special tool are ensured.
SPIETH Druckhülsen belong to the few elements, which are suitable also for an automated employment. An extensive company standard program provides for requirement-fair and economical solutions with high availability. On the basis of their requirements special solutions can be compiled and offered ready to be installed.
The printing cases in the overview:
- AK/IK - AL/IL for external clamping introduction
- DSK/DSL with integrated clamping introduction
- DSM with integrated clamping introduction for motor shafts (k6/m6)
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