- Detachable steel mounting feet
- Alloy steel timing gears.
- Cylindrical roller bearings.
- Piston ring air seals.
- Lip-type, hydrodynamic drive shaft seal.
- Splash lubricated spur timing gears and drive end bearings.

Heavy-duty, versatile, rotary blowers with reduced stress, vibration and noise
ROOTS® RAS Series heavy-duty gas blowers designed for continuous service. The wraparound plenum and WHISPAIR jet handles rapid backflow of gas into the blower from the discharge area.
- Pressure to 35 psig (2413 mbar)
- Vacuum to 16” Hg (539 mbar)
- Flows to 43200 cfm (73440 m3/ hr)
Benefits
- Advanced Noise Reduction: RAS WHISPAIR rotary blowers utilize integral-shaft ductile iron impellers and a proprietary WHISPAIR jet to control pressure equalization and reduce noise, pressure pulsation and power loss.
- Heavy-Duty Construction: RAS rotary blowers feature integral-shaft ductile iron impellers with an involute profile, grey iron headplates, and a rigid one-piece casing.
- Efficient Sealing Mechanisms: Piston rings and lip-type oil seals minimize air leakage and prevent lubricant from entering the air chamber, with a hydrodynamic seal on the drive shaft preventing oil leaks.
- Efficient Lubrication: Carburized and ground alloy steel spur timing gears are splash lubricated at both ends, with piston rings and lip-type oil seals preventing air leakage and lubricant entry into the air chamber.
- Versatile Mounting Options: Detachable steel mounting feet allow easy adaptation to vertical or horizontal installation requirements, with extended shafts available for different outlet configurations.
- Warranty Coverage: A warranty period of Twenty-Four months from date of original unit start-up or 30 months from date of original shipment is provided.
Performance and Data Sheets
Roots Parts Plan and Protection Plan Programs
Performance You Can Count On. Protection You Can Trust
Roots Parts Plan and Protection Plan programs provide the support you need to keep your ROOTS equipment operating at peak efficiency. From scheduled service kits and extended warranty coverage to comprehensive maintenance, diagnostics, and emergency response, these programs are built to maximize uptime, extend equipment life, and ensure long-term reliability.
Parts Plan delivers a premium preventative maintenance solution with up to three years of extended factory warranty coverage, annual service kits shipped directly to you, and oil sampling for condition monitoring. Designed for predictable, worry-free maintenance, this plan ensures you always have the right OEM parts, lubricants, and components to keep your blower running at peak performance.
Protection Plan provides comprehensive care for your blower systems through preventive and predictive maintenance, priority technical support, rapid emergency response, and service performed by OEM‑trained technicians. Backed by genuine OEM parts and detailed service reporting, this plan helps prevent unplanned downtime, protects your investment, and ensures long‑term operational stability.

