HubFlexCouplingSystem 7_14

HubFlexCoupling System

One of the easiest and least expensive couplings to install,

maintain and repair.

HubFlexCoupling System Basic Construction

Cover(Extreme duty cover shown)

Coupling hub

Coupling hubHF10-40 carbon steel or stainless steel HF50-70 ductile iron

Flexible insert element

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HubFlexCoupling System Design & Definition

•7 sizes of couplings •5 types of inserts•2 types of coupling materials•2 types of coupling covers•4 sizes of spacer couplings•3 sizes of banded inserts

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HubFlexCoupling System Features

• Fast and easy insert replacement – minimal downtime • Maintenance free – no lubrication required• No need to move drive or driven components to replace insert• No realignment required after insert replacement • More torque capacity than other flexible coupling systems• Isolates and controls vibration and shock• Can be installed vertically• Allows for facility standardization and simplification

• Made in USA

HubFlex Coupling System 4

• Elastomeric coupling that is in sheer through a urethane element.

• In sheer means there is no metal to metal contact in the coupling.

• The only component in the coupling that can fail under normal use is the urethane element.

• Wrap style element can be replaced without moving any of the equipment. NO RE-ALIGNMENT

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HubFlex Coupling System Insert Advantages

• HUBFLEX Coupling will accept axial, radial, and angular misalignment.

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HubFlex Coupling System Alignment

HubFlexCoupling System Design & Definition

•HF10 • Bore size range: ½” – 1-1/4”• Max Torque rating: 792 in. lbs.

•HF20• Bore size range: ½” – 1-5/8”• Max Torque rating: 3,789 in. lbs.

•HF30• Bore size range: 3/4” – 2-1/4”• Max Torque rating: 11,914 in. lbs.

•HF40• Bore size range: 7/8” – 2-3/8”• Max Torque rating: 25,870 in. lbs

• HF50• Bore size range: 1-1/2” – 3”• Max Torque rating: 52,408 in. lbs.

• HF60• Bore size range: up to 3-7/8”• Max Torque rating: 87,110 in. lbs.

• HF70• Bore size range: up to 4-1/8”• Max Torque rating: 116,432 in. lbs.

7 Sizes of coupling systems

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HubFlexInsert Description

•Standard duty (Orange)• Flexible shock absorbing urethane• Best suited for reversing applications or frequent starts/stops

•Medium duty (Green)• Urethane compound offers stiffness and durability while providing some degree of vibration and shock absorption• Well suited for replacing disc, gear or grid style couplings

• Extreme Duty (Black)• Offers highest capacity for torque of any

of the inserts• Best suited to replace gear or chain style

couplings• High Temp (Gray)

• Tolerates temperatures up to 350° • Other properties comparable to

Medium Duty (Green)• Food Grade (White)

• FDA approved for use with both dry and wet foods

• Other properties comparable to Standard Duty (Orange)

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HubFlexCoupling Design & Definition

2 types of coupling coversStandard Duty (SD) Slip-on• Suitable for High speed

• Installs quickly• Universal design

Extreme Duty (XH) Aluminum Split•High Torque Capacity

•Heavy Duty•Controls axial loading

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HubFlexSpacer Couplings

Spacer Hub

Spacer HubInsert

Spacer

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HubFlexSpacer Couplings

• Incorporates design advantages of standard couplings•Available in HF10 to HF40• Modular design•Stainless steel and carbon steel• Single spacer or double spacer assemblies to suit a wide range of DBSE dimensions (Distance Between Shaft Ends)• Typical applications include pumps

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Motor

HubFlexSpacer Couplings

Typical Spacer coupling application illustration

Driven Equipment

DBSE

Need to know for selection:• Motor HP• Motor RPM• DBSE• Shaft Sizes

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HubFlexSpacer Coupling Quick Selection

Ref Catalog page Q1813

HubFlexSpacer Coupling Quick Selection

Ref Catalog page Q1814

HubFlexSpecial Banded Inserts

• Banded inserts are manufactured with an outer ring of high strength urethane and are designed for use in spaces where a cover cannot be accessed or spaces where there is not room for a cover. Please note torque limitations.

• Ideal applications include coupled style C-face motor flanges.

Ref Catalog page Q1315

Comparing HubFlexTM to Other Styles of Shaft Couplings

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• Benefits– Handles extreme amount of torque

in small package– Accepts 1-1/2° misalignment

Gear Couplings

• Concerns– Metal on metal– Needs lubrication– Abrasive wear– Keeping lubrication in

coupling– Move equipment to replace– Replace complete coupling– Transmits shock and

vibration

Market leadersFalkKop-FlexLovejoy

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• Benefits– Cost – Dampens vibration and

shock– Accepts misalignment– Axial float

Grid Couplings

• Concerns– Metal on metal– Grease and seals– Vertical applications– Grids may be

replaced 2-3 times before hubs must also be replaced

– Seal replacement

Market LeadersFalkLovejoyKop-Flex

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• Benefits– Low purchase price – Simple (usually three pieces)

• Will handle some misalignment

• Market leaders– Lovejoy– TB Woods– Browning

Jaw Couplings

• Concerns– Compressed mode– Transmits shock and

vibration– Accepts very little axial end

float– Requires moving

equipment to replace insert– Jaws may become

damaged and require complete coupling replacement

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• Benefits – Accepts severe

misalignment– No lubrication– Replace element in place– Dampens vibration and

shock

Tire Couplings

• Concerns– Limited torque

capacity– Element releasing– Pulling hubs together

under high torque– Expensive

replacement– Limited shelf life– Subject to UV ray

deterioration

Market leadersRexnord “Omega”TB Woods “Dura-Flex”Dodge “Para-Flex”

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• Benefits – Replace element in

place– Dampens vibration and

shock– Similar benefits to

HubFlex

“Wrap Style” (me too) Couplings

• Concerns– Cover styles– Torque limitations– Most are imported

from China

Market leadersAtraflexFalk “Wrapflex”Timken “Quickflex”

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• Not a “fail-safe” design• Not recommended for indexing or positioning

applications• Not recommended for explosive atmospheres

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Considerations

• Steel• Mining• Aggregate and Cement• Food and Beverage Processing• Forestry Products• Pulp and Paper• Mobile Equipment• Oil and Gas• Automobile Plants• Pump Manufacturers and Packagers• Hydraulic Rebuilders

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Target Markets

GeneralBlowersCompressorsConveyorsApron feedersFansGeneratorsMixersAggregate and MiningCrushersHammer millsLumberGang sawsEdgersPlaner drivesHydraulic drives

Steel Industry– Coilers– Coke plants– Continuous caster– Cold mills– Strip mills– Cooling beds– Feed rolls – blooming

mills– Runout tables– Slitters– Tube conveyor rolls– Tunnel furnace drives

Pulp and Paper Mills– Pulpers– Repulpers– Bleachers– Calendar drives– Press drives– Chippers– Couch drives– Dryer drives– Fourdrinier– Reel– Stock pumps– Vacuum pumps– Washers– Digesters

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Target Applications

HUBFLEXTM NOMENCLATURE

Ref Catalog page Q425

HUBFLEXTM NOMENCLATURE

Ref Catalog page Q426

HUBFLEXTM NOMENCLATURE

Ref Catalog page Q427

Summary

One of the easiest and least expensive couplings to install, maintain and repair.

Lowest acquisition cost per inch pound of torque capacity as compared to most other

coupling styles

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QUESTIONS

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