1U128 Rotary Vane Air Pump

1U128B Rotary Vane Air Pump

The 1U128B rotary dry air pump’s unique bi-directional rotational design eliminates the need to stock multiple models and makes it impossible to install the wrong rotation pump on an engine. It may be operated either as a vacuum or a pressure pump. Its other unique features include an aluminum rotor and carbon-carbon composite vanes. This combination improves the vane wear rate and reduces susceptibility to premature failures, thereby improving reliability and extending service life. A no hassle, two-year warranty demonstrates our confidence in this pump.

1U128 Installation and PMA Information

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Options
Specifications
Fittings

1U128-006M	1U128-006C

All dimensions are the same as -006 except for flat area	Same as -006 except for decal

Physical Characteristics

Height:	3.825" ± .03"
Width:	3.55" ± .03"
Depth:	3.91" ± .06"
Weight:	2.2 lbs. (max)

Engine Pad:	AND 20000
Rotation:	Bi-directional
Overhang Moment:	5.2 in-lbs
Static Coupling Shear Torque:	175 in-lbs (max)

Installation

Port Threads:	3/8" x 18 N.P.T.
Hose Fittings:	1/2" I.D. (min)
Hose / Tubing:	5/8" I.D. (min)
Inlet Filter:	0.3 microns

Performance


Typical Vacuum Characteristics	Typical Pressure Characteristics

Continuous Vacuum across Pump Ports: 10 in. of mercury (max)
Continuous Pressure across Pump Ports: 12 in. of mercury (max)
Speed (Continuous): 4200 RPM (max)
Speed (Intermittent): 5000 RPM for 5 mins. (max)

Environmental

Ambient Temperature:	-40° C to 93° C (typ.)
Exhaust Temp. (Intermittent):	375° F for 5 mins. (max)
Exhaust Temp. (Continuous):	300° F
Vibration:
- CPS:	5 to 150
- Maximum Double Amplitude:	0.100 in.
- Maximum Acceleration:	10 G's
Humidity (Dewpoint):	-70° C
Altitude:	-1,000 to 30,000 ft.

High-Flow Fittings

	53B423-001 A 3/8" fitting iused for the pump output (pressure) in a typical vacuum installation having 5/8" hoses. Similar to Airborne 1K10-6-10.
	53B423-002 A 3/8" 45° fitting used for either inlet or outlet ports with installations having 5/8" hoses. Similar to Airborne 1K9-6-10.
	53B423-003 A 3/8" 90° long high-flow fitting used for either inlet or outlets with installations having 5/8" hoses.
	53B423-004 A 3/8" 90° short high-flow fitting used for either inlet or outlets with installations having 5/8" hoses.
	53B425-001 This adapter may be installed between the piston air pump and the AND20000 engine pump pad. To allow the pump an additional 1/4" clearance from the pump where necessary.