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The Jaw type couplings from Lovejoy are offered in the industry’s largest variety of stock bore/keyway combinations. These coupling require no lubrication and provide highly reliable service for light, medium, and heavy-duty electrical motor and internal combustion power transmission applications.
Applications include power transmission to industrial equipment such as pumps, gearboxes, compressors, blowers, mixers, and conveyors. Lovejoy’s standard bore program covers AGMA, SAE, and DIN bore/keyway and spline bore combinations. The Lovejoy’s Jaw type coupling is available in a variety of metal hub and insert materials. Hubs are offered in sintered metal, aluminum, bronze, steel, stainless steel, and ductile iron.
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Lovejoy’s CJ Series provides to the world market highly reliable curved jaw coupling for light, medium and heavy duty electric motor and internal gas combustion engine applications. The GS Series provides a coupling solution for the motion control industry which continues Lovejoy's long history of being the world's premier coupling supplier.
The three-piece design incorporates a radial curvature to the jaw face and both radial and axial curvature (crowning) to the elastomer (spider). The curved jaw hubs are offered in sintered iron, steel, aluminum, cast and nodular iron materials. The CJ Series curved jaw coupling and the variety of urethane elements allows for angular, parallel, and axial misalignment. A simple three-piece design, makes it easy to assemble. Unlike some metallic coupling designs, the CJ Series design requires no lubrication. When assembled, the CJ Series offers no metal to metal contact of parts. The elastomer in compression design offers the benefit of continuing to function even after the elastomeric ele¬ment fails (fail-safe design). The torque range of the CJ Series product is 7.5 to 28,000 Nm. Lovejoy offers the CJ Series in a range of prod¬uct with finished stock metric bores and keyways as well as with metric bores on a made-to¬ order basis.
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Jaw Couplings
Various Jaw Couplings
The zero backlash jaw coupling is comprised of an elastic "spider" and two hubs. The spider, made of an advanced polyurethane material, provides dampening of impulse loads, minimizing shock to the motor and other sensitive equipment. Available in two durometers, these spiders allow the user to customize the jaw coupling's performance. Selecting a soft spider will give the jaw coupling the greatest dampening characteristics, while a hard spider will provide the greatest torsional stiffness and strength. All jaw coupling spiders are press fit onto a curved jaw profile, assuring zero backlash operation. The curved jaw profile concentrates the forces to the center of the spider's limbs, improving the effectiveness of the elastomer material. Raised contact points on the spider limbs help maintain proper spacing between the two hubs, assuring electrical isolation and full angular misalignment capabilities. The Jaw coupling is considered fail safe because, if the spider fails, the jaws of the two hubs interlock allowing direct power transmission, allowing the application to be safely shut down for maintenance.
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For the correct selection of high-speed, dynamic or reversing precision drives and shaft couplings. Only backlash-free couplings are able to fulfil these requirements. We have a backlash-free coupling for every application which optimally harmonises with your drive system.
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- backlash-free transmission of torque
- high torsional stiffness, precision of transmission of rotational angle
- different torsional stiffness
- backlash-free shaft connection
- small dimensions, low moment of inertia
- compensation for radial, axial, and angular misalignment free of wear, maintenance-free, no standstill period
- not sensitive to temperatures between -30 °C and +100 °C, higher temperature ranges available on demand
- simple and operationally safe assembly
- economical and user-friendly due to modular system
- nominal moments between 0.4 - 5000 Nm
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Bellows Couplings
Bellows couplings combine stainless steel bellows and aluminum hubs to offer superior performance in motion control applications. The bellows are made of stainless steel, which makes them ideal for transmitting torque. Due to the bellows' thin walls, the coupling is able to flex easily while remaining rigid under torsional loads. Parallel misalignment, angular misalignment and axial motion are accommodated by bellows.
The combination of aluminum hubs with the bellows results in an extremely lightweight, low inertia coupling. Zero backlash and a long, maintenance-free life are assured since the coupling has no moving parts. An important feature of the bellows coupling is a balanced design to reduce vibration in high rpm applications.
Ruland bellows couplings are offered in six sizes with set screw or Nomar® clamp style hubs and bores ranging from 1/8" (3mm) to 1" (25mm). Stainless steel hubs, keyways, and other custom features are available by special order.
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For the correct selection of high-speed, dynamic or reversing precision drives and shaft couplings. Only backlash-free couplings are able to fulfil these requirements. We have a backlash-free coupling for every application which optimally harmonises with your drive system.
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Lovejoy brings to the market the best disc coupling yet to be offered. The Lovejoy disc coupling utilizes the latest design efforts through Finite Element Analysis, extensive testing of materials and couplings, and several years of operational experience in actual applications. The Lovejoy disc coupling is manufactured in the ISO 9001 certified manufacturing facilities of both companies.
Types of couplings include the three-piece industrial spacer unit used for general industrial applications and on OEM equipment. The five-piece dropout coupling is specially suited for refinery and API type applications. The close-coupled units fit in place of standard gear couplings.
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Disc Couplings
All disc couplings now have a black anodized finish.
Ruland disc couplings are available in single and double disc styles with bore sizes ranging from 1/8" to 1 1/4" in the inch series and 3mm to 30mm in the metric series. The disc coupling is composed of two black anodized aluminum hubs, multiple flat stainless steel disc springs and a center spacer for double disc styles. The center spacer is available in a choice of anodized aluminum or insulating acetal for electrical isolation. The thin discs allow for a substantial amount of angular and parallel misalignment between shafts, while remaining rigid under torque loads. The disc coupling, as a result, is a high performance motion control coupling with excellent high speed capabilities (up to 10,000 rpm), strength and torsional stiffness characteristics, and low inertia for today's highly responsive systems.
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Lovejoy's S-Flex coupling design is simple, ensuring ease of assembly and reliable performance. No special tools are needed for installation or removal. S–Flex couplings can be used in a wide variety of applications.
Its design is comprised of three parts. Two flanges with internal teeth engage an elastomeric flexible sleeve with external teeth. Each flange is attached to the respective shaft of the driver and driven and torque is transmitted across the flanges through the sleeve. Misalignment and torsional shock loads are absorbed by shear deflection in the sleeve.
In all designs, pre-molded teeth along the diameter of the sleeve engage with teeth of the coupling flanges. No clamps or screws are needed to connect the flanges with the flexible sleeve which securely lock together under torque for smooth transmission of power. All three sleeve materials are highly elastic which permits the S–Flex coupling to protect connected equipment from harmful shock loading, vibration, and shaft misalignment.
The S–Flex coupling from Lovejoy offers combinations of flanges and
sleeves which can be assembled to suit your specific application. Thirteen
sizes are available with torque capabilities that range from 60 in-lb to
72,480 in-lb.
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Backlash-free flexible shaft coupling - Simple plug-in installation | Vibration-damping function | Maintenance-free | ATEX Conform available
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Features:
- backlash free
- simple, plug-in mounting
- vibration damping
- compensation of radial, axial and angular
- misalignment
- transmission of torque values between 0,5 and 650 Nm
Common Applications:
- encoder
- precision drives
- feed drives
- grinding and milling spindles
- machine tools
- packaging machines
- industrial robots
- transfer lines
- multi-spindle heads
- wood processing equipment
- textile machinery
- conveying equipment
- linear motion
- measuring equipment and controls
- test rigs...
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MaskaFlex
- Superior product construction & design
- Revolutionary reinforced elastomeric element
- Solve problems of misalignment, end float & shock loads
- Forgiving, low maintenance, durable
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Lovejoy offers a variety of designs and models in its gear coupling family. From standard, off-the-shelf stock to new, high speed, special designs, Lovejoy can satisfy your gear coupling needs.
The original Continuous Sleeve, or “C” coupling, offers a lightweight, compact, and simple design without compromising torque carrying capacity.
The Flanged Sleeve, or “F” coupling, is available in exposed or shrouded bolt styles in which the number of bolts, size of bolts, and bolt circle are identical with industry standards.
The nylon sleeve gear couplings, Nyflex and Mite, are compact, lightweight couplings that use a nylon sleeve and two sintered iron hubs. Lubrication is not required with the nylon sleeve.
Lovejoy also has an All Metal Labyrinth Seal coupling and an Alloy Steel coupling. The All Metal Labyrinth Seal coupling is a flanged sleeve style, but uses no elastomeric seals. The Alloy Steel coupling is made from AISI 4140 steel.
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GC Gear Coupling
Precision grade JIS B 1702 grade 5
Gear teeth Standard full depth (w/Crowning)
Pressure angle 20
Material S45C (Carbon steel)
Heat treatment Induction hardened teeth
Surface hardness HRC 4853
Surface treatment Unichromic plating
Surface finish Cut
Datum reference surface for gear cutting : Bore / Outside diameter
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Cone Drive has a range of gear coupling solutions to meet our Customer's requirements for integration into our gearboxes or to supply on a replacement basis.
A torsionally rigid, lubricated design that offers high torque capacity, application versatility, and where high torque loads exist or shaft diameters exceed 100mm, the lowest initial cost. Available in 28 sizes, and all featuring triple-crowned teeth, David Brown gear couplings offer the industry leading torque ratings (over 8 million Nm) and the largest bore capacities (up to 1025 mm).
- Type GC02 & GC05 Continuous Sleeve Couplings - Features a one-piece, low profile sleeve encompassing the hubs. Economical and compact they are available in both close coupled and floating shaft models.
- Type G/GF32 Spacer Coupling - For pumps and compressor applications, provide ease of servicing 'connected' equipment.
- Type G/GF52 Floating Shaft Coupling - Used when distance between equipment is too great for spacer couplings. Two single engagement couplings with interconnecting shaft. Also available for vertical mounting.
- Type G/GF20 Close - Coupled Double Engagement Coupling - Design with 2 flex halves to accommodate both offset and angular misalignment. Also available for vertical mounting.
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Cone Drive has a range of coupling solutions to meet our Customer’s requirements for integration into our gearboxes or to supply on a replacement basis.
A general purpose, lubricated design that combines the economy and the high torque capacity of a gear coupling, combined with the torsional flexibility of an elastomer coupling. Backed by a 5-year lubrication warranty, David Brown grid couplings require no periodic maintenance when lubricated with David Brown LTG (Long Term Grease) at installation. Featuring 25 sizes, grid couplings can accommodate torque loads of 932,000 Nm and shaft diameters of 508 millimetres.
* Type T10 Close Coupled - A double flexing, close-coupled design for use in four bearing systems. Features a horizontally split cover which allows for gird replacement without the movement of the connected equipment.
* Type T20 Close Coupled Coupling - A double flexing design featuring a vertically split steel cover. Ideal for higher running speeds.
* Type T31 Full Spacer - Complete centre section drops out for easy service of connected equipment bearings and seals. Ideal for pump applications.
* Type T35 Half Spacer Coupling - An economical spacer design for easy service of connected equipment bearings and seals. Ideal for pump applications.
* Type T50 Floating Shaft Coupling - Double piloted design for connecting equipment where the distance between shafts is too large for a spacer type coupling.
Product Specification
* Bore Sizes: Up to 508 mm (20 in.)
* Unit Torque: Up to 932,000 Nm (8,248,200 lb.in.)
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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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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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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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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 Shaft Couplings - High torsional spring rigidity | Extremely high alternating torques | Large variant range | Low mass inertia | ATEX Conform available
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COUPLINGS
FLEXSTEEL
The advantages of the system:
- no backlash
- torsional stiffness
- high temperatures
- high speeds
- long, maintenance-free life
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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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Reli-a-Flex® Flexible Shaft Couplings
Reliance manufactures flexible shaft couplings, a crucial part of motion control assemblies. They are designed to provide accurate motion between two shafts where a small amount of misalignment exists.
Reli-a-flex - Flexible shaft couplings
Failure can have a catastrophic effect on the parent machine, in the form of a total loss of drive or position sensing.
For high integrity, high reliability,
accurate positioning applications Reliance engineers recommend Reli-a-Flex®couplings - engineered to perform in accurate measurement and precise motion control applications.
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Standard coupling N-EUPEX® A, complete standard Coupling N-EUPEX® B, complete standard Coupling N-EUPEX® H, complete standard Coupling HABIX® HWN, complete standard Coupling BIPEX® BWN, complete Standard Coupling RUPEX® RWN, complete Coupling PAGUFLEX® complete Coupling ESSEX®
Electrical drives and couplings
Our range includes AC/DC linear drives, DC motors, AC/DC servo drives and frequency inverters. The range of couplings includes torsionally flexible and torsionally rigid couplings.
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Maska 4-Flex
- 4-way flexing action
- 2 types of insert elements - EPDM & Hytrel
- J & S flanges bored to size ; B flanges fitted with QD bushing
- Precise concentrical product to avoid run-out and unbalanced drive
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Renold Couplings produce a wide range of standard and customised clutch and coupling products. These products include soft start fluid couplings, large gear couplings, elastomeric couplings and mill spindles.
Manufacturing and processing companies the world over rely upon Renold for their power transmission solutions.
Industrial sectors such as mining, quarrying, mineral processing, metal manufacture, cement and power generation regularly use Ajax mill Spindles, Hi-Tec flexible couplings, Renold Hydrastart, Gearflex and Pinflex couplings.
If you have an application requirement Renold will offer the solution.
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