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N-series boosters augment your existing system pressure in specific locations, elevating it up to 650 psig. Kaeser offers an extensive range of high-performance booster reciprocating compressors that work in perfect harmony with Kaeser rotary screw compressors and SIGMA PET AIR stations.

The N-series boosters are available with one or two cylinders and operate within the following performance parameters:

**Initial pressure up to 190 psig – discharge pressure up to 650 psig****Flow rate: 9.5 – 194 cfm**

Compared to designing the entire compressed air supply system for higher pressure, the use of boosters is significantly more cost-effective for all applications that require process air with a higher degree of compression than the normal control air and supply air at specific locations. * PET bottle production* is an excellent example of such applications.

**Your advantages**

**Continuous high-pressure operation:**

Innovative features such as oil pressure lubrication and intensified cylinder cooling ensure both long service life and low maintenance requirements as well as continuous system-compatible maximum pressure of 650 psig.**Exceptionally low oil requirement:**

The high quality cylinders are plateau-honed and feature an extra layer of wear protection. These details ensure low oil consumption over the entire service life.**For especially cool compressed air:**

The compressed air aftercoolers on the three-cylinder boosters are equipped with separate fans, which ensure low compressed air discharge temperatures. The boosters can be additionally equipped with water-cooled aftercoolers to attain even lower temperatures.

Energy cost savings

High quality premium efficiency electric motors deliver unparalleled efficiency for remarkably low power consumption. Their low operating temperature provides an added advantage.

We can help you optimize your compressed air installation. Contact us for a quote or to talk to a Kaeser representative about our products

Versions

The smaller models in this range are best suited to applications where low flow rates are needed at pressures up to 580 psig. These compressors are equipped with one- or two-cylinder compressor blocks and are driven by high efficiency motors with up to 5 hp capacity. The quality of these units is second to none as all compressor blocks are designed, manufactured and assembled by KAESER.

When greater air flow rates are needed at pressures up to 650 psig then the mid-size and larger of the Kaeser booster models are the natural choice. At the heart of every one of these powerhouses is a precision machined two- or three-cylinder compressor block that delivers exceptional efficiency. Premium-efficiency electric drive motors up to 25 hp provide optimal energy efficiency.

The N 2001 G air-cooled versions are equipped with a separate fan-assisted aftercooler to keep the temperature differential between the inlet and compressed air (ΔT) within close tolerances. To ensure optimal cooling performance with a ΔT value of only approximately 5 K even at high ambient temperatures, the N 2001 G models can be equipped with a water-cooled compressed air aftercooler.

Sample layout

- Rotary screw compressor
- Air receivers
- Booster
- "High-pressure" air receiver
- "High-pressure" refrigerated dryer

- Pneumatic tools
- Low pressure network up to 13 bar
- Prefilter
- High-pressure microfilter
- 650 psi compressed air network

Compressed air system with booster up to 650 psi

Technical specifications N 60-G

Model | N 60 75/290 psig | N 60 110/435 psig | N 60 145/500 psig |
---|---|---|---|

Inlet pressure psig | 75 | 110 | 145 |

Outlet pressure psig | 290 | 435 | 500 |

Flow rate complete system at working pressure acfm | 10 | 14 | 19 |

Compressor block / airend speed rpm | 1,150 | 1,150 | 1,150 |

Number of pistons — | 1 | 1 | 1 |

Nominal motor output hp | 3 | 3 | 3 |

Sound pressure level dB(A) | 74 | 74 | 74 |

Compressed air connection, inlet | NPT 1/2 | NPT 1/2 | NPT 1/2 |

Compressed air connection, outlet | NPT 1/2 | NPT 1/2 | NPT 1/2 |

Dimensions
W x D x H in | 36.2 x 17.7 x 21.6 | 36.2 x 17.7 x 21.6 | 36.2 x 17.7 x 21.6 |

Weight lb | 154 | 154 | 154 |

Model | N 60 190/500 psig |
---|---|

Inlet pressure psig | 190 |

Outlet pressure psig | 500 |

Flow rate complete system at working pressure acfm | 27 |

Compressor block / airend speed rpm | 1,150 |

Number of pistons — | 1 |

Nominal motor output hp | 3 |

Sound pressure level dB(A) | 74 |

Compressed air connection, inlet | NPT 1/2 |

Compressed air connection, outlet | NPT 1/2 |

Dimensions
W x D x H in | 36.2 x 17.7 x 21.6 |

Weight lb | 154 |

Technical specifications N 153-G

Model | N 153 75/290 psig | N 153 110/215 psig | N 153 145/215 psig |
---|---|---|---|

Inlet pressure psig | 75 | 110 | 145 |

Outlet pressure psig | 290 | 215 | 215 |

Flow rate complete system at working pressure acfm | 21 | 37 | 49 |

Compressor block / airend speed rpm | 650 | 650 | 650 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 5 | 3 | 3 |

Sound pressure level dB(A) | 74 | 74 | 74 |

Compressed air connection, inlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Compressed air connection, outlet | NPT 1/2 | NPT 1/2 | NPT 1/2 |

Dimensions
W x D x H in | 54.7 x 28.3 x 32.3 | 54.7 x 28.3 x 32.3 | 54.7 x 28.3 x 32.3 |

Weight lb | 562 | 562 | 562 |

Model | N 153 145/580 psig | N 153 190/580 psig |
---|---|---|

Inlet pressure psig | 145 | 190 |

Outlet pressure psig | 580 | 580 |

Flow rate complete system at working pressure acfm | 32 | 47 |

Compressor block / airend speed rpm | 650 | 650 |

Number of pistons — | 2 | 2 |

Nominal motor output hp | 5 | 5 |

Sound pressure level dB(A) | 74 | 74 |

Compressed air connection, inlet | NPT 3/4 | NPT 3/4 |

Compressed air connection, outlet | NPT 1/2 | NPT 1/2 |

Dimensions
W x D x H in | 54.7 x 28.3 x 32.3 | 54.7 x 28.3 x 32.3 |

Weight lb | 562 | 562 |

Technical specifications N 253-G

Model | N 253 75/360 psig | N 253 110/290 psig | N 253 110/500 psig |
---|---|---|---|

Inlet pressure psig | 75 | 110 | 110 |

Outlet pressure psig | 360 | 290 | 500 |

Flow rate complete system at working pressure acfm | 37 | 62 | 53 |

Compressor block / airend speed rpm | 1,135 | 1,135 | 1,135 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 10 | 10 | 15 |

Sound pressure level dB(A) | 76 | 76 | 76 |

Compressed air connection, inlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Compressed air connection, outlet | NPT 1/2 | NPT 1/2 | NPT 1/2 |

Dimensions
W x D x H in | 54.7 x 28.7 x 31.9 | 54.7 x 28.7 x 31.9 | 54.7 x 28.7 x 31.9 |

Weight lb | 639 | 639 | 639 |

Model | N 253 145/360 psig | N 253 145/650 psig | N 253 190/360 psig |
---|---|---|---|

Inlet pressure psig | 145 | 145 | 190 |

Outlet pressure psig | 360 | 650 | 360 |

Flow rate complete system at working pressure acfm | 80 | 67 | 108 |

Compressor block / airend speed rpm | 1,135 | 1,135 | 1,135 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 10 | 15 | 10 |

Sound pressure level dB(A) | 76 | 76 | 76 |

Compressed air connection, inlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Compressed air connection, outlet | NPT 1/2 | NPT 1/2 | NPT 1/2 |

Dimensions
W x D x H in | 54.7 x 28.7 x 31.9 | 54.7 x 28.7 x 31.9 | 54.7 x 28.7 x 31.9 |

Weight lb | 639 | 639 | 639 |

Model | N 253 190/650 psig |
---|---|

Inlet pressure psig | 190 |

Outlet pressure psig | 650 |

Flow rate complete system at working pressure acfm | 94 |

Compressor block / airend speed rpm | 1,135 |

Number of pistons — | 2 |

Nominal motor output hp | 15 |

Sound pressure level dB(A) | 76 |

Compressed air connection, inlet | NPT 3/4 |

Compressed air connection, outlet | NPT 1/2 |

Dimensions
W x D x H in | 54.7 x 28.7 x 31.9 |

Weight lb | 639 |

Technical specifications N 351-G

Model | N 351 75/360 psig | N 351 110/360 psig | N 351 110/500 psig |
---|---|---|---|

Inlet pressure psig | 75 | 110 | 110 |

Outlet pressure psig | 360 | 360 | 500 |

Flow rate complete system at working pressure acfm | 58 | 91 | 84 |

Compressor block / airend speed rpm | 950 | 950 | 950 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 15 | 15 | 20 |

Sound pressure level dB(A) | 77 | 77 | 77 |

Compressed air connection, inlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Compressed air connection, outlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Dimensions
W x D x H in | 61 x 34.6 x 40.2 | 61 x 34.6 x 40.2 | 61 x 34.6 x 40.2 |

Weight lb | 915 | 915 | 915 |

Model | N 351 145/360 psig | N 351 145/650 psig | N 351 190/360 psig |
---|---|---|---|

Inlet pressure psig | 145 | 145 | 190 |

Outlet pressure psig | 360 | 650 | 360 |

Flow rate complete system at working pressure acfm | 123 | 107 | 164 |

Compressor block / airend speed rpm | 950 | 950 | 950 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 15 | 20 | 15 |

Sound pressure level dB(A) | 77 | 77 | 77 |

Compressed air connection, inlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Compressed air connection, outlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Dimensions
W x D x H in | 61 x 34.6 x 40.2 | 61 x 34.6 x 40.2 | 61 x 34.6 x 40.2 |

Weight lb | 915 | 915 | 915 |

Model | N 351 190/650 psig |
---|---|

Inlet pressure psig | 190 |

Outlet pressure psig | 650 |

Flow rate complete system at working pressure acfm | 148 |

Compressor block / airend speed rpm | 950 |

Number of pistons — | 2 |

Nominal motor output hp | 20 |

Sound pressure level dB(A) | 77 |

Compressed air connection, inlet | NPT 3/4 |

Compressed air connection, outlet | NPT 3/4 |

Dimensions
W x D x H in | 61 x 34.6 x 40.2 |

Weight lb | 915 |

Technical specifications N 502-G

Model | N 502 75/360 psig | N 502 110/360 psig | N 502 110/500 psig |
---|---|---|---|

Inlet pressure psig | 75 | 110 | 110 |

Outlet pressure psig | 360 | 360 | 500 |

Flow rate complete system at working pressure acfm | 74 | 114 | 104 |

Compressor block / airend speed rpm | 990 | 990 | 990 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 15 | 15 | 20 |

Sound pressure level dB(A) | 77 | 77 | 77 |

Compressed air connection, inlet | NPT 1 | NPT 1 | NPT 1 |

Compressed air connection, outlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Dimensions
W x D x H in | 61.8 x 34.6 x 40.2 | 61.8 x 34.6 x 40.2 | 61.8 x 34.6 x 40.2 |

Weight lb | 1,014 | 1,014 | 1,014 |

Model | N 502 145/360 psig | N 502 145/500 psig | N 502 145/650 psig |
---|---|---|---|

Inlet pressure psig | 145 | 145 | 145 |

Outlet pressure psig | 360 | 500 | 650 |

Flow rate complete system at working pressure acfm | 155 | 145 | 132 |

Compressor block / airend speed rpm | 990 | 990 | 990 |

Number of pistons — | 2 | 2 | 2 |

Nominal motor output hp | 15 | 20 | 25 |

Sound pressure level dB(A) | 77 | 77 | 77 |

Compressed air connection, inlet | NPT 1 | NPT 1 | NPT 1 |

Compressed air connection, outlet | NPT 3/4 | NPT 3/4 | NPT 3/4 |

Dimensions
W x D x H in | 61.8 x 34.6 x 40.2 | 61.8 x 34.6 x 40.2 | 61.8 x 34.6 x 40.2 |

Weight lb | 1,014 | 1,014 | 1,014 |

Model | N 502 190/500 psig | N 502 190/650 psig |
---|---|---|

Inlet pressure psig | 190 | 190 |

Outlet pressure psig | 500 | 650 |

Flow rate complete system at working pressure acfm | 195 | 182 |

Compressor block / airend speed rpm | 990 | 990 |

Number of pistons — | 2 | 2 |

Nominal motor output hp | 20 | 25 |

Sound pressure level dB(A) | 77 | 77 |

Compressed air connection, inlet | NPT 1 | NPT 1 |

Compressed air connection, outlet | NPT 3/4 | NPT 3/4 |

Dimensions
W x D x H in | 61.8 x 34.6 x 40.2 | 61.8 x 34.6 x 40.2 |

Weight lb | 1,014 | 1,014 |