u-rai - equipamiento rotary positive blowers/exhausters copyright 2002 dresser,inc. all rights...

Download U-RAI - EQUIPAMIENTO    rotary positive blowers/exhausters Copyright 2002 Dresser,Inc. All rights reserved. ROOTS is a trademark of Dresser, Inc.

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  • B-12X95April 2002

    ROOTS

    U-RAIrotary positive blowers/exhausters

  • Copyright 2002 Dresser,Inc. All rights reserved.ROOTS is a trademark of Dresser, Inc.Universal RAI and URAI are registered Trademarks of Dresser, Inc.All information subject to change without notice.

    Greater pressuwith proven

    Versatile, reliableROOTSTM Univers

    Remarkably adaptableYou can mount the Universal RAI

    blower upside down or rightside up,with vertical or horizontal flow, andwith the drive shaft rotating in eitherdirection. With 17 frame sizes tochoose from, you have the perfectblower to fit your application withlittle or no modification.

    More performance, tooNow the Universal RAI line-up hasa broader range and is more ruggedthan ever, with flows to 2460 CFM,vacuums to 16" Hg and pressures to15 PSIG. You get a blower that notonly fits but gives you the bestperformance in its class.

  • Copyright 2002 Dresser,Inc. All rights reserved.ROOTS is a trademark of Dresser, Inc.

    Universal RAI and URAI are registered Trademarks of Dresser, Inc.All information subject to change without notice.

    ssure and flowen reliability

    ersal RAI blowerFITS your application

    Low costThe ROOTS Universal RAI line ofblowers is designed with the latestengineering technology and built usingthe most modern manufacturingprocesses. This results in cost savingswe can pass along to you. This genuineROOTS blower can actually cost lessthan ordinary competitive units.

    Built-in reliabilityEach Universal RAI is precisionmachined on the latest CNCequipment, assuring close tolerancesbetween the impellers, casing andheadplates to minimize slippage of air,improving efficiency and reliability.ROOTS exclusive Figure 8 gearboxdesign improves oil distribution andlengthens bearing and gear life.Oversize anti-friction bearings supportthe shaft, and, on the drive, cylindricalroller bearings will resist V-belt pull andextend service life.

    Fast deliveryThanks to over 45 stocking centersthroughout North America, youll geton-time delivery. You can scheduleproduction, reduce your inventory,anticipate your costs and meet yourdeadlines.

    Better serviceWith nearly 100 sales and distributionlocations, only ROOTS can offer thekind of responsive service andapplications assistance that theindustrys largest service networkprovides.

    Iron-clad warrantyROOTS is the leader in warranties,too the first to introduce a full 2year warranty. Well protect you oryour customer for a full 24 monthsafter start-up, not to exceed 30months after shipment.

  • Copyright 2002 Dresser,Inc. All rights reserved.ROOTS is a trademark of Dresser, Inc.Universal RAI and URAI are registered Trademarks of Dresser, Inc.All information subject to change without notice.

    1. Exclusive gearbox designFigure 8 gearbox actually improves oil distribution for longer gearand bearing life with smoother operation.

    2. Taper mounted timing gearsCarburized and ground alloy steel gears are precision machinedand taper fitted to alloy steel shafts, eliminating the need forunreliable timing pins.

    3. Original ROOTS impeller designDynamically balanced ROOTS impellers are center-timed to alloweither clockwise or counterclockwise rotation.

    4. Long-life anti-friction bearingsOversize cylindrical roller bearings at the drive shaft handle v-beltstress; all bearing points are engineered for long service life.

    You get increased performance through ROOTSextensive improvement program and life testing.

    Heres how

    Vertical Gear End Drive Shaft Bottom Drive Shaft on TopVERTICAL MOUNTING

    (Horizontal air flow)6

    45

    3

  • Copyright 2002 Dresser,Inc. All rights reserved.ROOTS is a trademark of Dresser, Inc.

    Universal RAI and URAI are registered Trademarks of Dresser, Inc.All information subject to change without notice.

    Two Figure 8 lobe impellers, mounted onparallel shafts, rotate in opposite directions. Aseach impeller passes the blower inlet, it trapsdefinite volume of air and carries it around thecase to the blower outlet, where the air isdischarged. With constant speed operation, thedisplaced volume is essentially the sameregardless of pressure, temperature or barometricpressure.

    Timing gears control the relative position ofimpellers to each other and maintain small butdefinite clearances. This allows operation withoutlubrication inside the air casing.

    Operating Principle

    Horizontal Gear End Drive Shaft on Left Drive Shaft on RightHORIZONTAL MOUNTING

    (Vertical air flow)

    5. Versatile mountingYou can mount the Universal RAI in multiplepositions to accommodate your specific needs.With your choice of 17 frame sizes, theres aUniversal RAI that fits right into your OEM orreplacement application.

    2

    1

    4

    65

    6. Rugged steel mounting feetThe Universal RAI can be easily changedfrom horizontal flow to vertical flow using thesame mounting feet. Theyre eveninterchangeable with the mounting holes ofcompetitive Roots-type blowers.

  • Copyright 2002 Dresser,Inc. All rights reserved.ROOTS is a trademark of Dresser, Inc.Universal RAI and URAI are registered Trademarks of Dresser, Inc.All information subject to change without notice.

    Performance SpecificationsUniversal RAI Pressure Table

    emarFeziS

    deepSMPR

    ISP2 ISP4 ISP5 ISP6 ISP7 ISP01 ISP11 ISP21 ISP31 ISP41 ISP51

    MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB MFC PHB

    22061100635725

    76437

    3.08.02.1

    21486

    4.03.19.1

    9366

    6.13.2

    8346

    8.17.2

    6336

    1.21.3

    2395

    8.22.4

    1375

    1.35.4

    9265

    3.39.4

    42061100635725

    9179051

    4.03.19.1

    1198341

    8.03.24.3

    868041

    9.08.22.4

    38731

    3.39.4

    18531

    8.36.5

    23061100820063

    43801441

    6.06.10.2

    72101731

    1.17.24.3

    4289431

    3.12.31.4

    1259131

    6.18.38.4

    9139921

    8.13.45.5

    68221

    0.67.7

    48021

    5.64.8

    28811

    1.71.9

    18711

    6.78.9

    97511

    2.85.01

    77311

    7.82.11

    33061100820063

    84941991

    8.00.25.2

    93041981

    4.15.35.4

    53631581

    7.12.44.5

    13231181

    1.20.54.6

    82921871

    4.27.54.7

    021071

    0.83.01

    811761

    7.82.11

    611561

    5.92.21

    63061100820063

    58352433

    2.13.35.4

    27932123

    3.28.57.7

    66432513

    8.20.73.9

    16922013

    3.33.89.01

    75422603

    8.35.95.21

    2406806710063

    2378891

    6.03.16.2

    4287091

    1.12.25.4

    1257681

    3.17.25.5

    8127381

    5.11.34.6

    5196181

    8.16.34.7

    26371

    0.52.01

    06171

    5.52.11

    85961

    9.51.21 761 1.31 561 1.41 361 0.51

    5406806710063

    86771004

    1.12.23.5

    35261583

    0.21.41.9

    84651973

    4.20.50.11

    24151473

    9.29.59.21

    73641963

    4.39.68.41

    331653

    6.95.02

    7406806710063

    29632925

    4.18.20.7

    37712015

    6.23.50.21

    66902305

    2.35.63.41

    95302694

    8.37.70.71

    35691094

    4.49.85.91

    3500706710582

    36302643

    0.17.20.5

    15191433

    8.17.42.8

    64681923

    2.27.59.9

    24181523

    6.27.65.11

    83771123

    0.37.72.31

    761013

    8.011.81

    361703

    8.117.91

    061403

    8.213.12

    751103

    2.410.32

    551892

    2.516.42 592 2.62

    6500706710582

    011543585

    6.16.40.8

    29623765

    9.27.75.31

    58913065

    6.34.92.61

    87213355

    3.41.110.91

    27603745

    9.48.217.12

    092135

    9.710.03

    582625

    6.917.23

    082125

    672715

    0.322.83

    9500706710582

    071315568

    2.24.68.11

    741094248

    2.44.119.91

    831084238

    1.58.319.32

    031274428

    1.63.619.72

    464618

    8.819.13

    5600706710532

    621783325

    8.13.57.7

    701863315

    3.31.98.21

    001063605

    1.40.113.51

    39353994

    8.48.218.71

    68743294

    5.57.413.02

    07033574

    8.74.024.72

    523074

    3.224.03

    023664

    2.429.23

    613164

    1.625.53

    113754

    9.720.83

    703254

    8.925.04

    8600706710532

    302126558

    7.29.74.11

    271195428

    1.50.415.91

    061975218

    3.60.715.32

    941765108

    5.70.026.72

    931755097

    7.81.326.13

    035367

    2.238.34

    225557

    2.538.74

    515847

    2.839.15

    705047

    3.149.55

    005337

    3.440.06

    51600706710532

    08346111061

    8.49.313.91

    32370114451

    3.92.526.43

    10348011251

    6.118.032.34

    97236010051

    8.315.638.94

    06244011841

    2.612.244.75

    6757500410502

    971115277

    3.24.65.01

    851094157

    3.45.118.71

    051184247

    4.59.314.12

    241374437

    4.64.610.52

    431664727

    4.78.816.82

    511744807

    4.013.625.93

    144307

    7.821.34

    634796

    2.137.64

    124486

    7.334.05

    514976

    1.630.45

    124286

    6.836.75

    11757500410502

    6334494241

    0.40.115.71

    9928097831

    7.70.027.03

    4823983731

    6.95.423.73

    1720889531

    4.110.929.34

    8527687431

    3.315.335.05

    6225385131

    8.811.743.07

    81757500410502

    36535513332

    3.60.719.62

    01500510822

    3.216.139.74

    98497419522

    4.510.936.85

    07406410422

    4.813.644.96

  • Copyright 2002 Dresser,Inc. All rights reserved.ROOTS is a trademark of Dresser, Inc.

    Universal RAI and