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Air Power Units, Blowers, & Accessories > Positive Displacement Blowers - Roots® URAI® WHISPAIR Positive Displacement Blowers


Positive Displacement Blowers - Roots® URAI® WHISPAIR Positive Displacement Blowers
ROOTS™ Universal RAI-J® WHISPAIR™ Positive Displacement Rotary Blowers
The Universal RAI-J® incorporates grease lube on the drive end and splash lube on the gear end.
Features:
LOWER AIR PULSATION- Patented WHISPAIR™ blowers operate with up to 40% less pressure pulsation than conventional blowers,
LONGER BEARING LIFE- thee WHISPAIR™ jet cavity smoothes the pulsations, resulting in less shock being transmitted through the impellers to he bearings,
LOWER VIBRATION- the reduction in the magnitude of the pressure pulsation results in smoother operation,
LOWER NOISE- The pressure pulses, inherent in the rotary-lobe design, are also the major source of blower noise.
Add Roots 33UJ URAI-J WHISPAIR Blower to cart Add Roots 36UJ URAI-J WHISPAIR Blower to cart Add Roots 45UJ URAI-J WHISPAIR Blower to cart Add Roots 47UJ URAI-J WHISPAIR Blower to cart Add Roots 56UJ URAI-J WHISPAIR Blower to cart


Positive Displacement Blowers - Roots® URAI® WHISPAIR Dimensional Data
Frame Size A A` B C D D1 D2 M O O` P P` R U DISCH. AX WGT
33UJ 7,25 7,25 7,63 12,13 5 8,5 5 6,25 12,81 10 10 12,13 6,75 0,75 2.0 NPT 1,75 84
36UJ 7,25 7,25 10 14,63 5 8,5 5 7,56 12,81 10,5 11 12,13 6,75 0,75 2.5 NPT 1,75 112
45UJ 8 8 10 15,5 6,25 10,25 6,25 8 15,06 12,25 12 13,63 8,25 0,875 2.5 NPT 2 119
47UJ 8 8 11,75 17,63 6,25 10,25 6,25 9,25 15,06 12,25 12 13,63 8,25 0,875 3.0 NPT 2 138
56UJ 10,5 10,5 11 17,5 6,25 11,25 6,75 9,19 17,38 14 14 17,25 8,75 1,125 4.0 NPT 2,5 190


Positive Displacement Blowers - Roots® URAI® WHISPAIR Pressure Performance Table
Frame Size Speed RPM 4 PSI
CFM 		4 PSI
BHP 		5 PSI
CFM 		5 PSI
BHP 		6 PSI
CFM 		6 PSI
BHP 		7 PSI
CFM 		7 PSI
BHP 		8 PSI
CFM 		8 PSI
BHP 		9 PSI
CFM 		9 PSI
BHP 		10 PSI
CFM 		10 PSI
BHP 		12 PSI
CFM 		12 PSI
BHP 		13 PSI
CFM 		13 PSI
BHP
33UJ 1750.00 75.00 1.00 71.00 2.00 67.00 2.00 64.00 3.00 61.00 3.00 58.00 4.00 56.00 4.00 51.00 5.00
33UJ 2950.00 149.00 3.00 145.00 4.00 141.00 4.00 138.00 5.00 135.00 6.00 132.00 7.00 130.00 8.00 125.00 9.00
33UJ 3550.00 186.00 4.00 182.00 5.00 178.00 6.00 175.00 6.00 172.00 7.00 169.00 8.00 167.00 9.00 162.00 11.00
36UJ 1750.00 132.00 3.00 126.00 3.00 121.00 4.00 117.00 5.00
36UJ 2950.00 254.00 5.00 249.00 6.00 244.00 8.00 239.00 9.00
36UJ 3550.00 316.00 6.00 310.00 8.00 305.00 9.00 300.00 11.00
45UJ 1750.00 161.00 3.00 155.00 4.00 150.00 5.00 145.00 6.00 140.00 7.00 136.00 8.00 132.00 9.00
45UJ 2950.00 306.00 6.00 300.00 8.00 295.00 9.00 290.00 11.00 285.00 12.00 281.00 14.00 277.00 16.00
45UJ 3550.00 379.00 8.00 373.00 10.00 368.00 12.00 363.00 13.00 358.00 15.00 354.00 17.00 349.00 19.00
47UJ 1750.00 215.00 5.00 208.00 6.00 201.00 7.00 195.00 8.00
47UJ 2950.00 407.00 8.00 399.00 10.00 392.00 12.00 386.00 14.00
47UJ 3550.00 502.00 10.00 495.00 13.00 488.00 15.00 482.00 18.00
56UJ 1170.00 196.00 4.00 188.00 5.00 182.00 6.00 175.00 8.00 170.00 9.00 164.00 10.00 159.00 11.00 150.00 13.00
56UJ 1750.00 324.00 7.00 316.00 8.00 310.00 10.00 304.00 12.00 298.00 13.00 292.00 15.00 287.00 17.00 278.00 20.00 273.00 22.00
56UJ 2850.00 567.00 12.00 560.00 15.00 553.00 17.00 547.00 20.00 541.00 23.00 536.00 26.00 530.00 28.00 521.00 34.00 517.00 37.00


Positive Displacement Blowers - Roots® URAI® WHISPAIR Positive Displacement Blowers
Frame Size Speed RPM MAX VACUUM
HG " 		MAX VACUUM
CFM 		MAX VACUUM
BHP
33UJ 1750.00 13.00 53.00 3.00
33UJ 2950.00 15.00 119.00 5.00
33UJ 3550.00 15.00 156.00 7.00
36UJ 1750.00 14.00 95.00 5.00
36UJ 2950.00 15.00 212.00 9.00
36UJ 3550.00 15.00 273.00 11.00
45UJ 1750.00 14.00 121.00 6.00
45UJ 2950.00 16.00 253.00 12.00
45UJ 3550.00 16.00 326.00 15.00
47UJ 1750.00 14.00 165.00 8.00
47UJ 2950.00 15.00 348.00 15.00
47UJ 3550.00 15.00 444.00 18.00
56UJ 1170.00 14.00 146.00 7.00
56UJ 1750.00 15.00 266.00 12.00
56UJ 2850.00 16.00 501.00 22.00

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Advanced Industrial Design's specific area of expertise is engineering and designing dilute phase pneumatic conveying systems.