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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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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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Rigid Couplings
Various Ruland Rigid Couplings
Ruland rigid couplings are available in one and two-piece designs, with and without keyways, in aluminum, carbon steel, and stainless steel. A large number of standard sizes are available in straight and step bore combinations to fit shafts ranging from 1/8" to 2" in the inch series and from 3mm to 50mm in the . Inch to metric conversion couplings are also available by special order. Shaft couplings are stamped with the Ruland name and the bore sizes for easy identification.
The one-piece rigid coupling wraps around the shaft, providing high torsional holding power without the shaft damage and fretting inherent when a set screw style coupling is used. The two-piece rigid coupling has the additional benefits of allowing for disassembly and maintenance without removal of other components. Two-piece couplings also feature opposing hardware for dynamic balancing.
Extra steps are taken in the manufacturing of rigid couplings to provide important performance benefits. As one of these steps, the bores of Ruland straight bore couplings are precision honed. Honing of the bores provides several benefits that enhance the overall performance of the coupling. Applications that require strict control of shaft alignment benefit greatly from honing, which assures both bores are collinear. Honing also corrects any residual distortions caused by stresses introduced during the manufacturing process, resulting in a round, precisely sized bore. Proper sizing and geometry assures a large percentage of shaft contact and greater torque transmission ability.
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COUPLING NUTS
ROUND OR HEXAGONAL
FEMALE / FEMALE THROUGH
STEEL OR STAINLESS STEEL
FROM M4 TO M 12
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AB TRASMISSIONI manufactures a wide range of rings and adaptors, both in cast iron and welded iron, for connection between diesel engines and: alternators, irrigation pumps, hydraulic pumps, hydraulic engines, compressors, gearboxes, inverters, etc.
Standard adaptors have unified SAE J617b sizes, but, for specific needs, customers-specific adaptors and rings can also be produced.
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Clamping sets constitute a particularly elegant way of a shaft/hub connection. They combine the advantages of a no-play clamped connection that is detachable, a high capacity for torque transmission and minimum structural and manufacturing requirements of the system to be clamped.
Ideal applications for instance arise in the assembly of:
• gears
• V-belt pulleys
• sprockets
• belt pulleys
• couplings or
• levers
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"QD" Interchangeable Bushing
- Ductile iron for added resistance
- Available "Short" for weld-on hubs
- Full, not partial split
- Set screw over the key - all sizes, except W & S
- Easy to install, easy to remove
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MISUMI provides more than 1 Million mechanical components for the assembly automation. We delivery components europewide in averagely 6-8 days GUARANTEED delivery from the day of purchase, stock items available from 2 days delivery.
MISUMI 24/7 Web Ordering System (WOS) represents a full-fledged e-Commerce solution, which you can use, for the first time, independently from the catalogue in paper form, to configurate MISUMI products, submit quotations and place orders.
For more information about MISUMI, WOS or for ordering a catalogue please visit: www.misumi-europe.com
MISUMI - Precisely Meeting Your Demands
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Shaft Collars
Ruland shaft collars are offered in multiple styles to fit shafts ranging from 1/8" to 6" in the inch series and 3mm to 80mm in the metric series, in a variety of materials and finishes. Collars are stamped with the Ruland name and the bore size for easy identification.
Extra steps are taken in the manufacturing of a Ruland shaft collar to provide important performance benefits. For example, Ruland collars are single point faced (indicated by the circular groove on the face) during the boring operation to insure perpendicularity of the face to the bore. Perpendicularity is important for alignment when collars are used as a bearing face, a mechanical stop, or for mounting other components.
One-piece clamp style shaft collars wrap around the shaft for even distribution of clamping forces. This results in a tight fit and greater holding power, without the shaft damage caused by set screws. Ruland uses carefully selected materials and proprietary processes to ensure that the clamping gap remains open for simpler and more precise adjustment, installation and fit.
Two-piece clamp style shaft collars offer the same benefits of the one-piece clamp collars with additional versatility and convenience. They are easily disassembled, reducing labor and downtime when adjustment, removal, or replacement is necessary. Ruland keeps both halves of its two-piece collars together throughout the manufacturing process to assure a perfect match for proper fit, holding power and alignment.
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Powerful and compact
Torque transmission is possible by means of PETER shrink-on disks.
The principle is thoroughly convincing especially in input and output connections by means of hollow shafts. Contrary to keyed connections, the non-positive connection by means of shrink-on disks permits considerably thinner wall thicknesses for the hollow shafts since the greatest part of the torque transfer is absorbed by the shrink-on disk and the shaft is not weakened by additional slots.
This results in lower shaft diameters and consequently volumetric savings in the remaining system. Weight, moments of inertia and space can be elegantly saved in this manner.
Other factors in favour of shrink-on disks are
• high performance density
• detachable connection
• rapid and simple assembly
• economic use
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Features:
- Does not mar the shaft.
- Single point faced.
- Acme and Left-hand threads available.
- Additional sizes available.
- Width tolerance: +.003"
-.010"
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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
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Key benefits:
Stronger connection than traditional"keyed" connections
Zero backlash due to keyless shaft/hub connection
No fretting corrosion on tapered faces
Reduced axial space required for installations
Quick disassembly for minimal downtime
Flange dimensions made to German RAG standard
Proven solution in many applications
Applications:
A rigid and easy to disassemble shaft coupling solution for:
Various types of elevators
Conveyor pulley drives
Bucket wheel excavators
Escalators and moving walkways
Many other possibilities
RINGSPANN will select the proper coupling for each application based upon the allowed transmissible torque under existing bending moment conditions. RINGSPANN%u2019s selection calculations are in accordance with the latest scientific knowledge and know how in the industry and include the proper safety factor to prevent fretting corrosion.
Series RFK 70 ... 290
for shaft diameters 50 up to 290 mm
max. Torque from 6000 up to 500000 Nm
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Available with straight-through or stepped bores, with and without keyways. Featuring the clamp-type design, these couplings are precisely machined to securely couple two shafts with no marring or backlash. Among our specialty shaft couplings you'll also find models built for extra tight tolerances or high torque values, as well as inch-to-metric conversion couplings.
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General Fabreeka® bushing information:
- Minimum wall thickness of 3/32" is recommended
- Fabreeka® bushing ID is the same as the bolt OD, and the bushing OD is the same as the hole it will fit into.
- To facilitate inserting Fabreeka® bushings, they can be lubricated with a soap solution.
- In general, tolerances on rubber impregnated bushings need not be controlled to the same closeness as required for metal fits, since Fabreeka® is a compressible/flexible material.
- In general production, the tolerance on bushing dimensions is ±1/32". If closer tolerance is required, please contact Fabreeka's® Engineering Department.
Fabreeka® washers are used under the steel washers of the hold-down bolts of Fabreeka® mountings to absorb the rebound shocks and afford complete isolation by eliminating the transmission of vibration through the bolts and steel washers. It also aids in preventing the bolts from becoming loose.
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With the full faced flanges out of PE 100, AGRU offers a perfect joining possibility to other materials.
Since a lot of fitting-accessories (slide valves, flaps or subterranean hydrants) are manufactured out of gray cast iron with spheroidal graphite, these full faced flanges were developed. By using them an unproblematic integration of other materials into a piping system out of polyethylene is possible. The full faced flanges are available in the dimensions 90, 110, 125, 160 as well as 180 and in the dimensioning SDR 11.
The constructive design of the full faced flange allows a permanent leak-proof connection. The hole pattern is in accordance with DIN 2501,
sheet 1. The long welding ends allow butt welding as well as electro-fusion.
A permanent stability as regards form and pressure is ensured by the use of PE 100 material and the integrated steel core.
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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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The flanges are the removable rigid connection by far more used, either for pipes or other mechanical items.
OMT manufacture a variety of forged types of flanges, as steel SAE flange, with threads GAS and NPT, weld in and weld on, standard or 90°.
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Exclusively from Stafford - Clamp-Type shaft collars manufactured to fit square or hexagonal shafts. They can be modified (drilled, tapped, welded, etc.) to act as mounts for other components.
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SHAFT-HUB CONNECTION DEVICES
CONEX
Reduces the machining costs, eliminates all the operationsfor axial fixing of the hub and to machine the keyways seats.
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SHAFT-HUB CONNECTION DEVICES
CONEX
Reduces the machining costs, eliminates all the operationsfor axial fixing of the hub and to machine the keyways seats.
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CHARACTERISTICS
1. SIMPLE MANUFACTURE
Large possible tolerances and simple turning treatment guarantee
cost-efficient production.
2. EASY MOUNTING
Only a few screws must be tightened, angle-exact alignment between
hub and shaft is possible in every position, fitting work is not required.
3. EASY REMOVAL
RINGFEDER® Locking Assemblies have releasing threads, thus no
additional auxiliary devices are required. Series 7012 is even self-
releasing (no releasing threads).
4. HIGH FATIGUE STRENGTH UNDER ALTERNATING TORSIONAL STRESSES
Neither shaft nor hub feature grooves, thus no attenuation of the
components. Shaft and hub can be designed definitely smaller (light,
cost- and space-saving construction is possible).
5. NO DANGER OF DEFLECTION
Locking Assemblies RINGFEDER® are absolutely free from backlash.
6. OVERLOAD PROTECTION EFFECT
In case the admissible load is exceeded, the Locking Assemblies will
slip. That way, valuable machine components are safeguarded against
damage. However, the Locking Assemblies are subject to the same
laws as all other frictional locking connections and are not suitable for
use as friction clutch.
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Clamping sets
External clamping set
* Shaft-hub connection free of wear and tear
* Power transmission even in case of highest loads
* Use: hollow shafts, slip-on gear mechanism
* Torque: from 30 Nm - 744000 Nm
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Fastening without play for the transmission of torques, axial forces and longitudinal forces.
RLK 110: for thin-walled hubs
self centering
the long clamping lenght guarantees true centering
lateral location ring secures the axial position
shaft diameters from 6 to 130mm
torque up to 20kNm
axial forces up to 319 kN
RLK 130/132 : universal for high torques
self centering
low cost
no lateral location ring
shaft diameters from 20 to 200 mm
torque up to 59 kNm
axial forces up to 590 kN
RLK 200: the classic standard type
50 sizes available
slit cones for rough fits up to h11/H11
shaft diameters from 20 to 400 mm
torque up to 442 kNm
axial forces up to 2210 kN
RLK 400/402: for heavy applications
self centering
large clamping area, low surface pressure
shaft diameters from 45 to 600 mm
torque up to 13700 kNm
axial forces up to 4600 kN
RLK 250: space saving element
self centering
easy mounting
radial application
shaft diameters from 15 to 70 mm
torque up to 1075 Nm
axial forces up to 31 kN
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ETP Bushings are the Ideal Locking Device for all Shaft-To-Hub Connections.
ETP Bushings feature a double-walled sleeve, pressure ring and tightening screws. They slide onto a shaft easily, and securely lock most shaft-mounted motion control components in position.
When the bushing screws are tightened the inner and outer walls of the bushing expand, forming a continuous, tight connection on shaft and hub.
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Stop Collars with Rubber Bumpers
The unique Threaded Fine-Adjust version makes stroke adjustment even easier! Simply slide along the shaft and clamp in place. Then rotate the knurled portion for up to 1/4" of fine stroke adjustment. Ordinary stop collars are also available.
Available On:
Dual Slides: 5/8" Bore 1" & 1-1/2" Bore
Single Action Slides: 5/8" Bore 1" & 1-1/2" Bore
Gantry Dual Slides: 1" & 1-1/2" Bore
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For use on standard round shafts, these shaft collars are sized .001” to .002” over nominal to allow a smooth slip fit to the intended location. Offered in set screw style, one-and two-piece clamp-type, as well as Stafford’s own Hinge Collar. Plus a broad assortment of problem solving collars from our Solution Series of Special Purpose Mechanical Components.
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CHARACTERISTICS
1. SLIT INNER RING
Low load losses and pressures on the hub.
2. BALANCING OF SMALLER DEVIATIONS IN TOLERANCES
For more information please contact our Technical Department.
3. HIGHEST RELIABILITY
Applicable for static, dynamic and impact loads.
4. SIMPLE MANUFACTURE OF THE COMPONENTS
Only low demands are made to the functional surfaces of the clamped
parts.
5. ABSOLUTE INTERCHANGEABILITY
Shrink Discs RINGFEDER® operate without any form closure.
6. EASY MOUNTING
Machining or fitting work is not required, standard tools suffice.
7. SHORT ASSEMBLY TIMES
Cost savings especially in serial production.
8. EASY REMOVAL
After loosening of the locking screws, the Shrink Disc RINGFEDER® is
released. The hub can be moved on the shaft freely.
9. LOW SUSCEPTIBILITY TO CONTAMINATION
Increased durability, as after tightening of the locking screws the
contact surfaces are pressed firmly together. Dirt and moisture cannot
ingress the functional surfaces.
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