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BASIC BLOWER DESCRIPTION

Universal RAI

DSL (Dual Splash Lubricated) blowers

are heavy-duty rotary blowers designed with detach-

able, rugged steel mounting feet that permit easy

in-field adaptability to vertical or horizontal installation

requirements. Because of the detachable mounting

feet, these units can be easily adapted to any of four

drive shaft positions: right, left, bottom, or top. The

compact, sturdy design is engineered for continuous

service when operated in accordance with speed and

pressure ratings.

This model consists of a cast iron casing, carbur-

ized and ground alloy steel spur timing gears secured

to steel shafts with a taper mounting and locknut, and

cast iron involute impellers. Oversized antifriction

bearings are used, with a cylindrical roller bearing at

the drive shaft to withstand V-belt pull.

The Universal RAI DSL (URAI DSL) blower features

splash oil lubrication on both the gear end AND drive

end. The drive end has two shaft-mounted oil slingers

and the gear end has ROOTS’ exclusive “figure-eight”

gearbox design that improves oil distribution to

maximize gear and bearing life. Sight glasses (3/8”)

are provided for accurate oil level confirmation. After

testing, the unit is sprayed with a protective paint,

and boxed or skid mounted for delivery. Available

accessories include driver, relief valve, inlet and

discharge silencers, inlet filter, check valve, extended

base, v-belt or flexible coupling and drive guards.

STRONGEST WARRANTY IN THE INDUSTRY

ROOTS

™

URAI DSL blowers are warranted for two

years plus an additional 6 months for shipping and

construction where required. ROOTS synthetic oil

assures top performance and warranty acceptance for

lubricants.

DESIGN AND CONSTRUCTION FEATURES

• Steel detachable mounting feet

• Rigid one-piece cast iron casing

• Anti-friction bearings

• Splash oil lubricated spur timing gears

• Splash oil lubricated drive end bearings

• Connections in standard pipe sizes

• Balanced, precision machined bi-lobe impellers

• Ground steel shafts

SPECIFICATIONS

ROOTS

™

UNIVERSAL RAI

DSL Dual Splash

Lubricated Rotary Positive Displacement Blowers

Frames 32 thru 615

S-27S03 rev.0608

Summary of content (4 pages)

PAGE 1
SPECIFICATIONS ROOTS™ UNIVERSAL RAI® DSL Dual Splash Lubricated Rotary Positive Displacement Blowers Frames 32 thru 615 BASIC BLOWER DESCRIPTION Universal RAI® DSL (Dual Splash Lubricated) blowers are heavy-duty rotary blowers designed with detachable, rugged steel mounting feet that permit easy in-field adaptability to vertical or horizontal installation requirements.
PAGE 2
Steel detachable mounting feet allow for adaptation to any of four drive positions: right, left, bottom or top. DSL FEATURE OIL SLINGER Vertical, Drive End Vertical, Gear End OIL SIGHT GLASS OIL SLINGER BI-LOBE OPERATING PRINCIPLE Horizontal, Gear End Two figure-eight lobe impellers mounted on parallel shafts rotate in opposite directions. As each impeller passes the blower inlet, it traps a finite volume of air and carries it around the case to the blower outlet, where the air is discharged.
PAGE 3
UNIVERSAL RAI® DSL BLOWER PERFORMANCE 1 PSI Frame Speed Size RPM CFM BHP 0.2 1160 40 32 2800 113 0.6 3600 149 0.9 0.3 1160 55 33 2800 156 0.9 3600 205 1.2 0.5 1160 95 36 2800 262 1.5 3600 344 2.1 0.2 860 38 0.5 42 1760 92 3600 204 1.4 0.5 860 79 45 1760 188 1.0 3600 410 2.7 860 105 0.6 47 53 56 59 65 68 615 Notes: 1760 249 3600 542 700 72 1760 211 2850 355 700 123 1760 358 2850 598 700 187 1760 529 2850 881 700 140 1760 400 2350 546 700 224 1760 643 2350 876 700 420 1760 1205 2350 1641 1.3 3.5 0.
PAGE 4
OUTLINE DRAWING & DIMENSIONS Universal RAI® DSL Blower Dimensions Frame Size AX Approx. Net Wt. (lbs.) 1.75 1.75 1.75 2.00 2.00 2.00 2.50 2.50 2.50 69 74 102 88 109 128 143 170 204 3.00 3.00 3.00 245 285 425 Drive Shaft Location A B C 11.25 12.13 14.63 13.00 15.50 17.63 15.38 18.00 21.18 D D1 D2 N O O1 P P1 7.75 7.75 7.75 8.75 8.75 8.50 10.25 11.00 11.00 12.13 12.13 12.13 13.63 13.63 13.63 17.25 17.25 17.25 R 32 33 36 42 45 47 53 56 59 7.25 7.25 7.25 8.00 8.00 8.00 10.50 10.50 10.