Oil-less Rotary Claw Compressors
Selectorr oil-less rotary claw compressors are ideal for air sparging, pneumatic conveying, and other low pressure applications. Standard models include an inlet silencer, inlet filter, and a pressure regulator. They are fitted with Nema flange motors, available in both standard and XP versions. Each model includes its own unique combination of motor, coupling/fan assembly, and pressure regulator.
Spec Sheet
PERFORMANCE CURVES
| Base Model | CA2 | CA3 | CA5 | CA7L | CA7 | CA10 | CA15 |
| RPM 60/50 HZ | 3450/2850 | 3450/2850 | 3450/2850 | 3450/2850 | 3450/2850 | 3450/2850 | 3450/2850 |
| Inlet/Discharge Connections | 1" | 1 1/2" | 1 1/2" | 2" | 2" | 3" | 3" |
| dB(A), Average 60 Hz | 80 | 83 | 83 | 85 | 85 | 85 | 85 |
| Weight with Largest Motor (lb.) | 205 | 331 | 386 | 628 | 648 | 1036 | 1213 |
| Gear Box Oil Capacity (quarts) | 0.8 | 0.8 | 0.8 | 1.2 | 1.2 | 1.2 | 1.2 |
| CONFIGURED MODELS: | |||||||
| CA2-5 | CA3-7 | CA5-10 | CA7L-15 | CA10-20 | CA15-25 | ||
| Motor HP | 5 | 7.5 | 10 | 15 | 20 | 25 | |
| Dimensions | drawing | drawing | drawing | drawing | drawing | drawing | |
| Part # (with motor) | 264342 | 264380 | 264382 | 264384 | 264389 | 264393 | |
| Part # (without motor) | 264342-LM | 264380-LM | 264382-LM | 264384-LM | 264389-LM | 264393-LM | |
| CA3-10 | CA5-15 | CA7L-20 | CA7-20 | CA10-25 | CA15-40 | ||
| Motor HP | 10 | 15 | 20 | 20 | 25 | 40 | |
| Dimensions | drawing | drawing | drawing | drawing | drawing | drawing | |
| Part # (with motor) | 264381 | 264383 | 264385 | 264387 | 264390 | 264394 | |
| Part # (without motor) | 264381-LM | 264383-LM | 264385-LM | 264387-LM | 264390-LM | 264394-LM | |
| CA7-25 | CA10-30 | CA15-50 | |||||
| Motor HP | 25 | 30 | 50 | ||||
| Dimensions | drawing | drawing | drawing | ||||
| Part # (with motor) | 264388 | 264391 | 264395 | ||||
| Part # (without motor) | 264388-LM | 264391-LM | 264395-LM | ||||
| CA10-40 | |||||||
| Motor HP | 40 | ||||||
| Dimensions | drawing | ||||||
| Part # (with motor) | 264392 | ||||||
| Part # (without motor) | 264392-LM | ||||||
Rotary claw compressors require little to no maintenance and can operate continuously and dependably for long periods of time. Inlet filters are typically used to trap contaminants from entering the compression chamber.
A claw compressor consists of two rotors. The rotors turn in opposite directions, without contact, with very tight clearances. They are synchronized via a precision gear. As the claw moves over the suction connection and the axial suction channel inlet, gas is sucked into the compression chamber.
The revolving rotors move gas from the suction side to the pressure side. Then it is compressed by the reduction of the volume between the rotors until the lower rotor uncovers the discharge channel. This "internal compression" leads to high differential pressures at efficiencies of more than 60%. To remove the heat generated by the compression process, cooling air is sucked in between the compression housing and a silencing cover before leaving the pump.
