QST/QSB: Long, Efficient Life

Quincy®'s QST/QSB rotary screw air compressors feature large rotors--127mm in diameter. Because of their size, those roters can run at slower speeds than other rotary screw compressors. Slower speeds give you extended airend life and quiet, economical, efficient operation

.

The QST/QSB compressors also provide all the quality customers expect from Quincy. That includes the Quincy airend, which features the latest, most efficient rotor profiles. We shape, profile, and fine-tune each rotor individually using state-of-the-art manufacturing processes. No other compressor manufacturer holds tighter manufacturing tolerances than Quincy--we machine our rotors precisely to provide you with maximum airend efficiency.

For the flexibility of a tank-mounted unit, select the QST; the base-mounted QSB is ideal for installations where space is tight. Either way, you are sure to get long, efficient operating life from a Quincy rotary screw compressor.

Inside the QST/QSB

Large rollers for longer life and higher efficiency

Standard features

127mm rotors for slow-speed, economical operation and maximum airend life
Oversized cylindrical roller bearings on suction end
V-belt drive with OSHA-compliant guard
Triple-lip seal with lubricant scavenge system
Cast iron construction
Across-the-line full voltage starters
Factory fill of Quin-Syn® lubricant
Spin-on, 8-micron absolute, micro-fiberglass lubricant filter with full-flow bypass
Lubricant thermal valve
Air discharge check valve
Air/oil reservoir safety valve
Control line filter (with auto-dual control)
High Air Temperature (HAT) shutdown protection
Options

Modulation with percent capacity gauge
Auto-dual control
Remote-mounted separator indicator
Air filter indicator
Heavy-duty intake filter
NEMA 4
200/230/575 volt motors
50 cycle
TEFC and high-efficiency motors
Wye-Delta reduced voltage starting
Low-sound enclosures
Water-cooled oil cooler and aftercooler
Lead/lag control