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A jaw coupling is made with two metallic hubs with an elastomer (plastic) called the spider. The spider material is soft and mainly designed to absorb vibration. It is the first piece to wear and need to be replaced. The unit functions to minimize parallel or angular misalignment at high rpm. The spider center is ideal for motor connection applications needing shock absorption.
Two metallic hubs & a spider (elastomer)
• Conventional straight or curved jaw
• Ideal for servo applications
• Excellent shock absorption
• Curved jaws reduce deformation of spider
• Limits centrifugal force
• Balanced to handle high RPM, 40k+
• Functions with minimal parallel or angular misalignment
• Unit Transmits torque in event of spider failure
• Mix and match spider to accommodate multiple environments and applications
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The couplings are used to establish a connection between an electrical motor with standard flange and a pump.
The couplings of this range allow to establish a perfect assembly between electrical motors with standard flange up to 315 kW and the majority of the hydraulic pumps available on the world market.
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Maska Starflex
- Wide variety of applications
- Cost-saving choice of component
- Interchangeable
- 4 types of insert materials
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The Jaw Type couplings are offered in the industry’s largest variety of stock bore/keyway combinations. These couplings require no lubrication and provide highly reliable service for light, medium, and heavy duty electrical motor and internal combustion power transmission applications. They are also fail-sale and will perform if elastomer fails, provides no metal to metal contact, resistant to oil, dirt, sand, moisture and grease.
Applications include pumps, gear boxes, compressors, blowers, mixers and conveyors. The couplings are available in a variety of metal hub and insert materials. Hubs are offered in sintered metal, aluminum, bronze, steel, stainless steel, and ductile iron.
Lovejoy offers four types of elastomer designs to allow for additional flexibility in addressing specific application requirements. Elastomer materials are available in Sox (NBR) rubber, Urethane, Hytrel, and Bronze.
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- very low mass inertia torque
- easy for assembly
- a small space for assembly
- balanced
- special design available on request
The size of the coupling should be selected so that the nominal torque is greater than the highest torque to be regularly transmitted. (Acceleration or load torque). The shaft misalignments must not exceed the previously mentioned values. Otherwise this will limit the working life of the coupling.
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The perfect servo coupling - Low cost | Plug-in type, variable bore diameters | Larger shaft misalignment compensation capability | Minimal mass moment of inertia
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A two-parts aluminum or steel hub element consisting of thin metallic bellow. The unit is designed to accommodate lateral and/or angular misalignment that can occur due to tolerance in machined parts. Good connecter to use between motor, gearbox and drive shafts. Zero windup and backlash with low inertia.
Two hubs with thin metallic Bellow
• Handles angular, parallel & axial misalignment
• 1-2 degrees angular & .010-020 parallel
• Rigid under torsional load
• High accuracy and repeatability at 10,000 RPM
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Features of R W Bellows Couplings:
Compensates for axial, lateral and angular shaft misalignment, also causing quiet, smooth operation
High degree of torsional stiffness
Exact angular transmission of angular motion and torque, zero backlash
Infinite life
Wear and maintenance free
Easy mounting and dismounting
Low lateral stiffness
Low moment of interia
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These torsionally stiff couplings serve for the connection of two shaft ends compensating for angular and parallel misanlignment as well as axial backlash. They are used for the backlash-free and precise angular drive of:
-potentiometers / angle encoders
-resolvers / transducers
-low powered drives
The mounting of the coupling onto the shaft ends is achieved by two set screws each with one cup point per hub. In the case of a smaller than indicated size of bore, an accurate transmission or peak-torque is no longer guaranteed. Larger borings can be supplied on request.
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Miniature Metal Bellows Couplings from R+W
Properties of MK Miniature Couplings:
precise transmission of angular motion and torque
zero backlash
torsionally rigid
infinite life
wear and maintenance free
compensates for axial, angular and lateral misalignment
easy assembly
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The oldham coupling is the newest in the coupling family and is similar in design to the Jaws and Disc couplings. This unit consists of three pieces: two hubs and one center disk made of plastic. The centerpiece is press-fitted to eliminate backlash and also designed to act as a mechanical fuse. The disc slides to accommodate large parallel misalignment. The shaft attached to the hubs must be supported to take full advantage of this unit.
Three pieces: Two hubs, one center disk
• Choose plastic or metallic center disk for your specific application
• Press fit = zero backlash
• Center disk slides to accommodate slight misalignment
• Functions with large parallel misalignment of .025-.100, angular misalignment of .5 degree and axial misalignment of .005
• Shafts attached to the hubs must be supported
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Oldham Couplings
Clamp style Oldham Coupling - separated view
Oldham couplings are ideal for many motion control applications. Comprised of aluminum hubs with drive tenons that mate to a torque transmitting plastic disc, their design allows for easy sliding to accommodate misalignment with a very light bearing load. Oldham couplings also have the advantages of electrical isolation, low inertia and a balanced design for higher rpm applications. While the couplings accommodate a small amount of angular and axial misalignment, they are especially useful in applications with parallel misalignment.
Set Screw Oldham CouplingOldham couplings are offered in seven sizes of set screw or clamp style hubs with bore from 1/8" (3mm) to 1" (25mm). The hubs are anodized for improved lubricity and increased life. The replaceable center discs are available in two materials to suit different applications. Nylon discs are compliant to dampen vibrations and reduce noise. Acetal discs are designed for precision applications requiring zero backlash and high torque capacity. Since the discs are replaceable, they may be used as a torque limiter.
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The Roller Chain Coupling is a safe, compact and powerful flexible coupling, able to handle loads from 0.1 - 11,000 kW. The sprocket teeth are specially shaped and hardened, and torque is evenly apportioned.
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Today’s manufacturing sector is concerned with the amount of downtime spent on scheduled and unscheduled maintenance. The dollars lost to unscheduled maintenance by itself can be quite substantial. All industrial facilities use some type of flexible coupling for pumps, compressors, conveyors, and other machinery.
Fact is, flexible couplings all require some type of maintenance. Gear and grid type flexible couplings require lubrication. To lubricate these types of couplings, the lube plugs must first removed and then the coupling is filled with grease. Various elastomeric type flexible couplings require periodic change of the elastomeric element. The difficultly level for different types of elastomeric couplings can vary widely. Some, like the standard jaw product, require that one of the hubs be moved back on the shaft to allow for the element to be changed-out. Machinery may have to be moved to allow for this hub movement, which can be very time consuming.
Other elastomeric designs have many fasteners and parts to be disassembled for element change-out. In either case, the time that it takes to change this element is critical for maintenance personnel. This is where the advantages of the Lovejoy Jaw In Shear 6 Pin design provide a solution to plant downtime. There are no tools necessary, no hubs to move, no messy lubrication to deal with and best of all – elements can be changed in minutes.
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- Material aluminium Al-H made of solid material
- Torsionally flexible, maintenance-free, vibration-damping
- Axial plug-in, fail-safe
- Different elastomer hardness of spiders
- Allover machined with good dynamic properties
- Compact design with small flywheel effect
- Finish bore according to ISO fit, feather keyway according to DIN 6885
sheet 1 - JS9 and P9
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DELTEX - S Torsionally flexible shaft couplings - made of steel
Hubs from steel, specifically for drive elements subject to high loads,
e. g. elevator drives, steel mills, spline hubs etc.
- Torsionally flexible, maintenance-free, vibration-damping
- Axial plug-in, fail-safe
- Different elastomer hardness of spiders
- Allover machined with good dynamic properties
- Compact design with small flywheel effect
- Finish bore according to ISO fit, feather keyway according to DIN 6885
sheet 1 - JS9 and P9
- Surface protected (zinc-coated and yellow passivated, Cr6-free)
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- Double cardanic curved-tooth gear coupling
- Maintenace-free due to the material combination of steel and nylon
- For all applications in the range of general engineering and hydraulics
- Axial plug-in, easy assembly
- Compensating for axial, radial and angular shaft misalignment
- Finish bore according to ISO fit, kayway according to DIN 6885 sheet 1,
JS9 and P9
- Surface protected steel parts (zinc-coated and passivated, Cr6+free)
Caracteristics of the DELWEX - sleeves (material polyamide):
- High mechanical consistency and stiffness
- Favourable slide-friction behaviour
- High thermal stability to +100°C
- Good viscosity even in case of low temperatures
- Very good electrical insulating property
- Good resistance to chemicals
Behaviour of wear and friction of the DELWEX - sleeves:
The high thermal stability and resistance to lubricants, fuels,
dissolvents, hydraulic fluids, etc. make polyamide an ideal material
for components stressed by sliding, particularly for the coupling
production. While any metallic materials tend to "corrode" in case of
dry running, slide combinations with steel and polyamide are operative
without any lubrication and maintenance.
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DELTEX - XS Torsionally flexible spider replacement couplings, made of steel or stainless steel
This patented elastic shaft coupling is a new Innovation. After removing
the safety cover the spider can exchanged easily without moving the
driving or driven side (for example motor or pump). After removing the
cover the separable spider can be exchanged without any problem.
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- For high shaft displacements, double-cardanic
- Reduced vibration and noise
- The restoring forces resulting from displacements are very low
- Increase of the total lifetime of all adjacent components (bearings,
seals, etc.)
- This double-cardanic shaft coupling offers in addition all
characteristics of the DELTEX-S shaft coupling
- Finish bore according to ISO fit, feather keyway according to
DIN 6885 sheet 1 – JS9 and P9
- Surface protected (zinc-coated and yellow passivated, Cr6-free)
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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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Tooth gear couplings ArcuDent AD
Many different series covering a wide variety of specificapplication areas,
spindle couplings,
special gear couplings according to customer’s drawings,
Torque range: 1 200 Nm – 7 780 000 Nm.
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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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Very large torque capacity.
Higher permissible additional loads.
Larger than usual hub bores.
DNV Type Approval certificates.
A Real Complete Range.
Highest quality.
Inventory of standard products and
of materials. Quick Service.
Compliance with AGMA standard.
Interchangeability.
Special designs.
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Compact Torque Measurement Coupling - Contactless torque measurement | Integrated into a backlash-free shaft coupling | Simple electrical and mechanical installation | Robust and reliable machine element | Completely maintenance-free
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Torsionally rigid design FLEXDUR FD / FD-C
angular, axial, radial flexibility,
maintenance-free,
temperature reisistant up to 250° C,
various designs,
also with long spacer,
Torque range: 90 Nm – 800 000 Nm,
explosion protection acc. to directive 94/9/EC.
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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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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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Flexible couplings 
