addax catalog - 2022

8/8/2019 Addax Catalog - 2022

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The advanced composite full floating center sectionweighs less than 25% of a comparable steel spacer. Butdont be fooled by the lighter weight. Rexnord Addax

advanced composites are heavyweights when it comes toperformance, due to their rugged, corrosion-resistantdesign. With almost twice the critical speed of metals,and up to an 80% reduction in overhung bearing loads,Rexnord Addax composite couplings reduce vibrationand extend bearing life. Installation is made easierbecause there is no need for a crane to install mostRexnord Addax advanced composite coupling systems.Most cooling tower coupling assemblies weigh less than100 pounds, so maintenance personnel can easilyhandle them.

The specific modulus of the composite material is3.5 to 5 times that of steel alloys. This allows thecomposite spacers to span almost twice thedistance of a comparable metal spacer without theneed for intermediate bearings. The lower densityand higher specific stiffness of composite materialsmake it practical to use larger cylinder diametersthan would be feasible with steel.

A single length, 20-foot long composite drive shaftfrom a Rexnord Addax coupling may weigh 100pounds while the steel counterpart would weigh about500 pounds and be in two sections! Elimination ofsteady bearings means drastically reduced maintenancerequirements, at lower cost of ownership and increasedreliability.Standard corrosion resistance exceeds that of 216ss; orRexnord Addax associates can formulate corrosionresistance for specific conditions. Additional ultra-violetlight protection is provided by a carbon black additive.

Rexnord Addax Composite Center Section

Low weight Corrosion

resistance

Extendedbearing life Reduced

vibration Elimination of

intermediatebearings

No lubrication


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This patented Rexnord Addax flexible element wasdeveloped to withstand harsh conditions andhigh-misalignment problems found in cooling towers.This flexible element is a unitized disc constructed of

advanced composite materialand stainless steel bushings. Allflex elements are encapsulatedin urethane for ease of handling,appearance, and to preventfretting and corrosion.The exceptional physical andmechanical properties ofcontinuous fiber provides highmisalignment capacity and longservice life.Rexnord Addax flexibleelements provide infinitefatigue life and simplifiedinstallation.

The Rexnord Addax coupling flange is an integralcomponent of the Rexnord Addax coupling. Thispatented component transfers torque from the flexibleelement to the long span composite tube. It is a

low-mass, all composite structure fabricated fromcontinuous fiber material. There is no metal in it at all.The fiber angle path has been optimized for carryingtorque and minimizing stress through the flange. Thisdesign offers supreme fatigue strength for cooling toweroperation. It also offers extraordinary corrosionresistance in a chlorine rich cooling tower environment.One of the design features is a high fiber volumecomposite reinforcing ring (cross hatched area) designedintegral into the flange area. This ring providesadditional strength and stiffness in the bolt joint area.

This strength in the flange provides the highest integrityfor the bolt circle attaching and centering the flexibleelement.Other manufacturers fabricate this flange from randomfiber glass and do not have the fatigue strength of theAddax coupling flange. A random fiber flange does nothave the reinforcing ring and is prone to fatigue failurein the grueling cooling tower duty applications. TheRexnord Addax coupling flange is continuous fiberand fatigue tested to demonstrate superior strength.

4

U S P A T E N

T

6 9 0 5 4 1 6

P A R T N 0 . 2 0 0 8 1 7 - 0 4 0

REXNORD ADDAX

Rexnord Addax Patented Composite Flexible Element

High-strength

composite Designed for

severe conditions One-degree

misalignment perflexible element

Exceptionalservice life

No fretting andcorrosion effects

Fretting and stress crack corrosion the leadingcontributors to metal disc pack failure are completelyeliminated along with the multitude of parts required forassembly. Maintenance costs are dramatically reducedand installation is greatly simplified. Rexnord Addax flexible elements provide years of trouble-free operation,even under the most demanding conditions.Rexnord Addax elements are offered in a number ofsizes with different torque ratings. Each torque rating isbased on static and dynamic tests to provide an infinitefatigue life at rated torque and misalignment.The flexible element is the only component of thecoupling system that experiences alternating loading inwhich fatigue becomes a factor. The strength ofgraphite/epoxy remains well over 100,000 psi throughinfinite cycles. Therefore, the Rexnord Addax flexibleelement has theoretical infinite fatigue life under ratedoperating conditions.

Rexnord Addax Patented Continuous Fiber Composite Flange

Patent No. 5724715.


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Rexnord Industries, LLC, 2007. (2022) 5

WARRANTY

Seller warrants that its products (i) conform to Sellerspublished specifications, and (ii) are free from defects inmaterial or workmanship for one year from the date ofshipment. Specific products may have a warranty periodgreater than one year. Please refer to the appropriatedocument and to Sellers website for the specific warranty. IfBuyer discovers a failure of any product to conform to thesewarranties within this period, it must promptly notify Seller inwriting. Seller will attempt to repair such non-conformingproduct at no charge to the Buyer. If Seller in unable to repairthe product to conform to these warranties after a reasonablenumber of attempts, or if Seller determines at any time thatrepair is impracticable, it will provide, at its own discretion,one of the following: (i) replacement product, or (ii) a fullrefund of that portion of the purchase price allocable to thenon-conforming product. These remedies are the exclusiveremedies for breach of warranty.

WHAT IS NOT COVERED BY THIS WARRANTYNo representative of Seller has any authority to waive, alter,vary, or add to the terms hereof of without prior approval inwriting, signed by an officer of our company. It is expresslyagreed that the entire warranty given to the Purchaser isembodied in this writing. Company does not warrant anydefects in, damage to, or failure of products caused by: (i)dynamic vibrations imposed by the drive system in which suchproducts are installed unless the nature of such vibrations hasbeen defined and accepted in writing by Company as acondition of operation, (ii) failure to provide suitableinstallation environment, (iii) use for purposes other thanthose for which designed, or other abuse or misuse, (iv)unauthorized attachments, modifications or disassembly, or(v) mishandling during shipping. Buyers care in selection,adequate testing at time of installation and proper

installation, proper operation and maintenance of all Productsare required for adequate performance.

DISCLAIMER OF WARRANTY:THE FORGOING WARRANTIES ARE IN LIEU OF ALL OTHERWARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOTLIMITED TO THE IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULARPURPOSE. IN NO EVENT SHALL COMPANY BE LIABLE INTORT OR CONTRACT OR UNDER ANY OTHER LEGAL OREQUITABLE THEORY OF LAW FOR ANY INCIDENTAL,SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES.

Rexnord Addax Coupling

Standard construction consists of a flanged composite spacer,patented composite flexible elements, 316 Stainless Steelhubs and 316 Stainless Steel hardware. K-500 Monelhardware are available upon request to suit corrosiveenvironments.

Standard Balance

All couplings are dynamically balanced to meet ANSI/AGMA9000-C90 (R96), Class 9 specifications.

Rexnord Addax Coupling Catalog

Table of ContentsFeatures, Functions, and Benefits . . . . . . . . . . . . . . . . . . . 2Composite Center Section . . . . . . . . . . . . . . . . . . . . . . . . . 3Patented Composite Flexible Element . . . . . . . . . . . . . . . . . 4Patented Continuous Fiber Spacer Flange . . . . . . . . . . . . . . 4Warranty Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Balance specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5General and Engineering Dimensions . . . . . . . . . . . . . . . . . 6Blade Pass Frequency Information . . . . . . . . . . . . . . . . . . . 7Models & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Cooling Tower Backstop . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Cooling Tower Coupling Application Data Sheet . . . . . . . . . 10


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General and Engineering Dimensions H

6 (2022) Rexnord Industries, LLC, 2007.

MODELSERIES

Spacer &Flange

Material Q

Max DBSE @1780 rpm@ 1.15 SF

Max DBSE @1480 rpm@ 1.15 SF

Max BoreA

B CD MinDBSE

MinBoreSt anda rd Ove rsi zed S ta nd ar d O ve rs ize d S ta nda rd Ov er si ze d

350.275F 95 / 2413 106 / 2692

2.13 / 55 2.38 / 65 5.25133 3.06 / 78 4.00 /102 1.81 / 46 2.6 / 66 2.75 / 705.4137

0.6316

A 107 / 2718 119 / 3023R 114 / 2896 126 / 3200

375.275F 95 / 2413 106 / 2692

2.13 / 55 2.38 / 65 5.25133 3.06 / 78 4.00 /102 1.81 / 46 2.6 / 66 2.75 / 705.4137

A 107 / 2718 119 / 3023

R 114 / 2896 126 / 3200

450.275

F 95 / 2413 106 / 2692

2.13 / 55 2.88 / 75 5.25133 3.15 / 46 4.00 / 102 1.81/ 46 2.63 / 67 2.75 / 705.4137

A 107 / 2718 119 / 3023R 114 / 2896 126 / 3200X 128 / 3251 141 / 3581

485.338F 100 / 2540 113 / 2870

2.63 / 70 3.38 / 85 6.00152 3.72 / 94 4.75 / 121 2.75 / 70 2.75 / 70

3.38 / 86 8.0203A 116 / 2946 127 / 3226R 127 / 3226 140 / 3556

485.425R 141 / 3581 154 / 3912

4.25 /108 8.0203X 154 / 3912 169 / 4293

485.625 R 170 / 4318 189 / 4800 6.25 / 159 9.5 / 241

650.425A 133 / 3378 148 / 3759

3.00 / 80 3.88 / 100 6.75171 5.25 / 133 6.75 / 171 2.56 / 65 2.75 / 70

4.25 / 108 6152

1.0025

R 141 / 3581 154 / 3912X 154 / 3912 169 / 4293

650.625R 170 / 4318 189 / 4800

6.25/1609.5241

X 186 / 4725 208 / 5283

650.825R 193 / 4902 215 / 5461

8.25/210X 209 / 5309 232 / 5893

850.625A 157 / 3988 172 / 4369

4.13 / 105 5.06 / 130 9.0229 5.8 / 147 7.5 / 191 3.31 / 84.1 3.5 / 89

6.25 / 160

14.2361

R 170 / 4318 189 / 4800X 186 / 4725 208 / 5283

850.825R 193 / 4902 215 / 5461

8.25 / 210X 209 / 5309 232 / 5893

850.1025 X 229 / 5817 253 / 6426 10.25 / 260

850.1275 X 245 / 6223 275 / 6985 12.75 / 324

Units ofMeasure

US in in in in in in in in in in in inSI mm mm mm mm mm mm mm mm mm mm mm mm

MODELSERIES

Spacer& Flange Material Q

Weight@ Min DBSE

WR2@ Min DBSE l

Weight Changeper Length

WR2 Changeper Length l

Continuous Torque@ 1.0 SF

Continuous Torque@ 2.0 SF

PeakOverload

Torque

350.275F

13.8 / 6.2 32 / 0.00930.07 / 1.5 0.13 / 0.0015

3,617408

1,808204

5,425613

A 0.06 / 1.2 0.11 / 0.0013R 0.06 / 1.1 0.10 / 0.0012

375.275F

13.8 / 6.2 32 / 0.00930.07 / 1.5 0.13 / 0.0015 5,311

6002,660300

7,967900

A 0.06 / 1.2 0.11 / 0.0013R 0.06 / 1.1 0.10 / 0.0012

450.275

F

12.9 / 5.9 32 / 0.0092

0.07 / 1.5 0.13 / 0.00157,250820

3,625410

10,8751229

A 0.06 / 1.2 0.11 / 0.0013R 0.06 / 1.1 0.10 / 0.0012X 0.06 / 1.2 0.10 / 0.0012

485.338F

23.4 / 10.6 47 / 0.0140.09 / 1.8 0.24 / 0.0029

11,0001243

5,500621

16,5001864

A 0.08 / 1.5 0.21 / 0.0024R 0.07 / 1.4 0.19 / 0.22

485.425R

24.0 /10.9 74 / .0220.09 / 1.7 0.38 / 0.0044

X 0.09 / 1.8 0.39 / 0.0045

485.625 R 26.5 /12.0 92 / 0.027 0.13 / 2.6 1.2 / 0.015

650.425A

31.5 / 14.3 122 / 0.0360.10 / 1.9 0.42 / 0.0049

18,1002045

9,0501022

27,1503067

R 0.089 / 1.7 0.38 / 0.0044X 0.092 / 1.8 0.39 / 0.005

650.625R

34.4 / 15.6 141 / 0.0410.13 / 2.6 1.2 / 0.014

X 0.14 / 2.7 1.3 / 0.015

650.825 R 37.9 / 17.2 194 / 0.056 0.18 / 3.4 2.9 / 0.033X 0.18 / 3.6 3.0 / 0.035

850.625A

63.6 / 28.8 440 / 0.1300.15 / 2.9 1.4 / 0.016

36,2004090

18,1002045

54,3006135

R 0.13 / 2.6 1.2 / 0.014X 0.14 / 2.7 1.3 / 0.015

850.825R

68.5 / 31.0 512 / 0.150.18 / 3.4 2.9 / 0.033

X 0.18 / 3.6 3.0 / 0.035

850.1025 X 74.8 / 33.9 657 / 0.19 0.23 / 4.4 5.8 / 0.067

850.1275 X 78.4 / 35.6 768 / 0.22 0.28 / 5.5 11.3 / 0.13

Units ofMeasure

US lb lb-in 2 lb/in lb-in 2 /in in-lb in-lb in-lbSI kg kg-m 2 kg/m kg-m 2 /m Nm Nm Nm

H All dimensional values are subject to change without notice.Q F=Fiberglass; A=Amalgamation; R=Standard Carbon Fiber; X =Special Carbon Fiber.l The standard weight and WR 2 values are at minimum DBSE and standard minimum bore for a complete assembly. To determine the total weight or inertia, sub tract the minimum DBSE from

the total DBSE required and multiply that value times the WT and/or WR 2 change per length then add that calculated WT or WR 2 to the minimum DBSE values. Values may vary slightlydepending on the actual bore and key size.


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Engineering DataDrive Shaft Vibration Caused by Blade PassFrequency (BPF)Lateral Natural Frequency (LNF) relates to beam stiffness andmass of the composite coupling. All beams have a naturalfrequency. The Rexnord Addax driveshaft is a long slenderbeam that has a LNF commonly referred to as critical speed.Critical speed of the shaft is calculated in SelectC 2007 and

is supplied to our customers. Blade pass frequency (BPF) isthe number of blades multiplied by the fan speed. Fan bladesin a cooling tower induce a forcing frequency caused bypressure pulsations on adjacent components including thedrive shaft.Blade pass vibration is caused by pressure pulsations on thedrive shaft when the shafts natural frequency is coincidentwith the fan blade pass frequency. When the drive shaft isexperiencing a blade pass harmonic, sometimes it can be seenbouncing out of plane. This shaft vibration usually manifestsitself in the motor and gearbox. Shaft natural frequency andblade pass frequency must be designed 8% away to haveassurance there is no overlap. Rexnord Addax shafts exhibitminimal vibration contributing to the overall spectrum.Additionally, gear mesh frequency can be heard resonatingfrom the drive shaft, however this is typically at a much higherfrequency magnitude than blade pass frequency.

The Cooling Technology Institute (CTI) recommends a 1.3factor - critical speed over operating speed. The 1.3 factorwas established prior to composite shafts when only steeldrive shafts were used. Steel shafting is massive, deflectsfrom thermal growth, less predictable and potentiallydangerous when approaching critical speed. Composite shaftsare less than 1/3 the mass of a steel and dimensionally

stable. As composite shafts offer 1/3 less mass the deflectionmagnitude is significantly less than steel and safe whenapproaching critical speed. Rigorous testing has proven that a1.3 margin is not required for composite shafting and a 1.15margin is adequate. Each Rexnord Addax shaft size andmaterial was tested and manufacturing variability accounts forless than 3% of the variability in the shafts LNF. It is notrecommended to use a 1.15 safety factor when purchasingshafts from other manufacturers because they may haveexcessive mfg variability. Manufacturing variability of theRexnord Addax shaft accounts for less than 3% of thevariability in the shafts LNF. These facts demonstrate that a15% safety margin over operating speed is adequate for safedrive shaft service.


AXIS OF ROTATION

- DEFLECTION

+ DEFLECTION

- DEFLECTION

+ DEFLECTION

BLADE PASS FREQUENCY = or LATERAL CRITICAL DRIVE SHAFT 1/ 3

LATERAL CRITICAL FREQUENCY


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Rexnord Addax Composite Couplings


DCOMPOSITESPACER

A B

COVERSIZEDHUB

B

STANDARDHUB

COMPOSITEFLEXIBLE ELEMENT

DBSE

SPACER LENGTH

Models: 350.275, 375.275, 450.275, 485.338, 650.425, 850.625

DCOMPOSITESPACER

A B

COVERSIZEDHUB

B

STANDARDHUB

COMPOSITEFLEXIBLE ELEMENT

DBSE

SPACER LENGTH

Models: 485.425, 650.625, 650.825, 850.825, 850.1025, 850.1275


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Rexnord Cooling Tower Backstop


Bolt-On Backstop Tabulation

MODELMating Hub Backstop Bolting Information

OD W (Ref)Pawl Diameter (Ref)

CompressedSpeed (rpm Ref)B. C. Diameter Hole Diameter TighteningTorque Compressed Sprung

350/375/450 3.500 .3125 40 in-lb

9 1 / 16 1 1 / 8 9 3 / 16 10 9 / 16 400 rpm Ref485 4.063 .3125 142 in-lb650 4.625 .3750 225 in-lb

850 4.875 .5000 350 in-lb

OD

W A

A

B.C.DIAMETER

NOTES:

1. 162 & 200 SIZE SUPPLIED WITH(4) SOCKET HEAD CAP SCREWS. ALL OTHER SIZES SUPPLIED WITH(4) HEX HEAD CAP SCREWS.

2. BACKSTOP MAY BE INVERSELYMOUNTED FOR OPPOSITE ROTATION

CW OPERATIONCCW BACKSTOP

- MATE-UP BOLTING SUPPLIED WITH BACKSTOP ASSEMBLY

SECTION A -A

MAX BORESPRUNGPAWL DIAMETER (NO OPERATION)

COMPRESSEDPAWL DIAMETER (RUNNING)


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Rexnord Addax Cooling Tower Couplings

Motor Data:HorsePower:

RPM:

NEMA or IEC Frame Size:Motor Shaft Diameter:

Key Size:

Two Speed? Yes No High Speed: Low Speed:

Variable Speed: Yes No Max Speed: Min Speed:

Gear Reducer Date:Reduction Ratio:

Input Shaft Diameter:

Key Size:

Fan Data:Number of Blades:

Fan RPM:


(Distance Between Shaft Ends is defined as the length measured between the face of the gear box input shaft and the face of themotor shaft to within 0.10 inches (2.5mm).

DBSE

MOTOR SHAFT END

GEAR REDUCER SHAFT ENDFAN

GEAR REDUCER MOTOR

Cooling Tower Coupling Application Data SheetQuote/Job Number:

Customer:

DBSE:

Date:

Location:

Quantity:


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NOTES


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World Class Customer ServiceFor more than 100 years, the dedicated people of Rexnordhave delivered excellence in quality and service to ourcustomers around the globe. Rexnord is a trusted name whenit comes to providing skillfully engineered products thatimprove productivity and efficiency for industrial applicationsworldwide. We are committed to exceeding customerexpectations in every area of our business: product design,application engineering, operations, and customer service.

Because of our customer focus, we are able to thoroughlyunderstand the needs of your business and have the resources

available to work closely with you to reduce maintenancecosts, eliminate redundant inventories and prevent equipmentdown time.

Rexnord represents the most comprehensive portfolio of powertransmission and conveying components in the world with thebrands you know and trust.

Rexnord Industries, LLC, 6040 Fletcher Avenue, Lincoln, NB 68507 USAPhone: 402-325-6000 Fax: 402-325-6406

2007 Rexnord Industries LLC

2022 10/2007 Delzer Litho Printed in USA

Rexnord and Addax are registered trademarks of Rexnord Industries, LLC. All rights reserved.

WORLDWID E CUSTOMER SERVICE

AUSTRALIA

Rexnord Australia Pty. Ltd.Picton, New South WalesPhone: 61-2-4677-3811Fax: 61-2-4677-3812Falk-Rexnord Australia Pty LtdBroadmeadow NSW AustraliaPhone: 61-2-4962-8000Fax: 61-2-4962-8001BRAZIL

Rexnord Correntes Ltda.Sao Leopoldo - RSPhone: 55-51-579-8022Fax: 55-51-579-8029

Rexnord Canada Ltd.Scarborough, OntarioPhone: 1-416-297-6868Fax: 1-416-297-6873CHINA

Rexnord ChinaShanghai, ChinaPhone: 86-21-62701942Fax: 86-21-62701943

EUROPERexnord NV/SAMechelen, BelgiumPhone: 32-15-.443811Fax: 32-15-443860Rexnord Kette GmbHBetzdorf, GermanyPhone: 49-2741-2840Fax: 49-2741-284-385

LATIN AMERICA

Rexnord International, Inc.Milwaukee, WisconsinPhone: 1-414-643-2366Fax: 1-414-643-3222E-mail:[email protected]

MEXICO

Rexnord S A De C V

Mexico DF, MexicoPhone: 52-55-9140-3500Fax: 52-55-9140-3550SINGAPORE

Rexnord International, Inc.Singapore City, SingaporePhone: 65-6338-5622Fax: 65-6338-5422

UNITED STATES

Customer ServicePhone: 1-866-REXNORD

(1-866-739-6673)Fax: 1-614-675-1898E-mail: rexnordcs(state)@rexnord.comExample: [email protected]

ALL COUNTRIES NOT LISTED

Rexnord InternationalMilwaukee, WisconsinPhone: 1-414-643-2366Fax: 1-414-643-3222E-mail: [email protected]

addax catalog - 2022

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