Pressure
Pressure at production is the target
A 125, 160 or 217 psi package should be selected from the process pressure backwards. Downstream losses still determine what the machine or tool actually receives.
Kaeser SK
AIRCENTER SK 15–20
An integrated 15–20 hp compressed-air station combining an SK rotary screw compressor, ABT 25 refrigerated dryer and 92.5-gallon receiver in one coordinated package for industrial production air.
15–20 hp48–88 acfm by pressure/model92.5-gal receiver37 °F pressure dew pointSIGMA CONTROL 2
Demand / problem
Growing plants can outstrip smaller package capacities while still wanting one compact station that integrates compression, drying and usable receiver storage.
Engineering mechanism
SK single-stage screw compression with SIGMA PROFILE, ABT 25 refrigerated drying, a 92.5-gallon receiver and SIGMA CONTROL 2 operate as one coordinated package.
Ownership value
AIRCENTER SK keeps compression, refrigerated drying and receiver storage together while preserving service access, automatic control and a clean path to site-specific filtration or plant-level integration.
Integrated air station
37 °F PDP drying
48–88 acfm matrix
SIGMA CONTROL 2
Service access
11 sq. ft. class footprint
The actual system problem
More air demand increases the cost of getting the system wrong.
At 15–20 hp, the compressor choice has to be connected to real plant demand, point-of-use pressure, pressure loss, moisture control, storage and redundancy. Buying the next horsepower size without that context can create excess pressure, poor cycling or insufficient usable air.
Moisture
Moisture load rises with air demand
Higher flow means more water is carried through the compressed-air system. The integrated ABT 25 dryer controls moisture before distribution, but final air quality remains application-specific.
Storage
Receiver storage has a job
The 92.5-gallon receiver can buffer short demand events and support compressor control, but it does not replace correct continuous-capacity sizing.
Integration
Integrated hardware simplifies installation
Compressor, dryer and receiver are packaged together, reducing the interconnection work of separate major components while keeping a single equipment footprint.
Application fit
For industrial demand that fits the SK fixed-speed pressure-and-flow range.
AIRCENTER SK is a strong fit where the required pressure-specific flow falls within the SK package range and an integrated compressor, refrigerated dryer and receiver station simplifies the installation. Critical uptime still requires deliberate storage, isolation and redundancy planning.
Strong fit
Growing production shops
AIRCENTER SK 15 and 20 extend integrated package capacity into a higher airflow class while retaining a relatively compact station footprint.
Strong fit
Distributed plant-air stations
The SK package can support a remote production area or building where a dedicated local air source makes more sense than a long high-loss branch from a central plant.
Strong fit
Machine clusters with steady demand
Where several CNCs, pneumatic fixtures, material-handling devices or other users create a fairly stable baseload, fixed-speed SK capacity can be a strong match when measured correctly.
Qualify treatment
Air-quality-sensitive processes
The integrated refrigerated dryer controls moisture, but finishing, food, instrumentation or other sensitive processes may require additional filtration or a different dew-point strategy.
System-level decision
No-downtime production
If one compressor failure would stop a critical line, engineer duty/standby capacity, storage and controls. One SK AIRCENTER is not automatic redundancy.
Select from demand backwards
Choose SK 15 or SK 20 only after pressure and real flow are known.
Complete-system airflow changes with working pressure at 125, 160 and 217 psi. Choose the model from usable air demand at the required pressure—not nominal horsepower alone.
Measure demand
Establish average, peak and minimum air consumption and how the profile changes across shifts and production states.
Set usable pressure
Start with the lowest pressure the most demanding point of use requires, then account for treatment and distribution losses.
Define air quality
Confirm whether a 37 °F refrigerated-dryer pressure dew point is enough and identify any particulate or oil-content requirement.
Model storage and control
Use the 92.5-gallon receiver, acceptable pressure swing and peak duration to understand useful storage and compressor cycling.
Confirm the operating profile
Confirm that the measured operating profile is appropriate for the fixed-speed SK package before final model selection.
Product architecture
A larger integrated station built around the SK compressor platform.
AIRCENTER SK combines a fluid-injected single-stage SK screw compressor, ABT 25 dryer, 92.5-gallon receiver and SIGMA CONTROL 2 inside one coordinated package.
Compression
SK rotary screw compressor
The SK airend uses single-stage compression with cooling-fluid injection and SIGMA PROFILE rotors, paired with Premium Efficiency IE3 motor construction.
Drying
ABT 25 refrigerated dryer
Both AIRCENTER SK 15 and SK 20 use the ABT 25 refrigerated dryer with electronically controlled condensate drainage and cycling shutdown logic.
Storage
92.5-gallon receiver
Both package sizes use the same 92.5-gallon integrated receiver.
Control
SIGMA CONTROL 2
SIGMA CONTROL 2 provides automatic package control, operating visibility and communications capability.
Technical data
AIRCENTER SK 15 and SK 20—pressure-specific flow and package data.
Use the pressure-specific rows below to match required airflow, working pressure and package configuration.
| Model | Working pressure | Complete-system flow | Motor | Dryer | Receiver | Dimensions W×D×H | Connection | Sound | Weight |
|---|---|---|---|---|---|---|---|---|---|
| AIRCENTER SK 15 | 125 / 160 / 217 psi | 70 / 59 / 48 acfm | 15 hp | ABT 25 | 92.5 gal | 30 × 53 × 74 in | 1 NPT | 67 dB(A) | 1,274 lb |
| AIRCENTER SK 20 | 125 / 160 / 217 psi | 88 / 77 / 65 acfm | 20 hp | ABT 25 | 92.5 gal | 30 × 53 × 74 in | 1 NPT | 68 dB(A) | 1,292 lb |
ABT 25 dryer: 37 °F pressure dew point, R-513A refrigerant and a hermetic refrigeration circuit. Electrical supply, package input power, site protection, ventilation and final filtration remain configuration and installation items.
Efficiency strategy
Higher flow makes pressure discipline and demand matching even more important.
The SK package includes KAESER’s SIGMA PROFILE airend, split cooling and demand-oriented control. The plant result still depends on choosing the correct pressure version, minimizing downstream pressure loss and selecting fixed-speed operation only where the demand profile supports it.
Compression efficiency
SIGMA PROFILE airend
SIGMA PROFILE rotors are stated to require approximately 10–20% less energy than conventional rotors of the same air-delivery capacity.
Airend architecture
Single-stage fluid injection
Single-stage compression uses cooling-fluid injection for rotor cooling.
Thermal management
Dual-flow cooling
Separate airflow paths cool the motor, fluid/compressed-air cooler and control cabinet, supporting thermal stability and service life.
Treatment energy
Cycling refrigerated dryer
The ABT dryer can shut down with the inactive compressor and can alternatively be set for continuous operation on site.
System pressure
Pressure discipline
Do not select 160 or 217 psi unless the process needs it after pressure-loss allowance. Excess system pressure can increase energy use and artificial demand.
SIGMA CONTROL 2
Local control with a path to plant-level integration.
SIGMA CONTROL 2 provides local package control with Ethernet connectivity and optional industrial communications modules.
Interface
Operational visibility
Traffic-light LEDs and the display show operating status while the controller monitors package operation.
Control modes
Demand-oriented modes
Dual, Quadro, Vario and Continuous control modes are available for package operation.
Data
Data and service support
An SD card slot supports logging and updates; RFID and the integrated web server support controlled access and network visibility.
Connectivity
Communications
Ethernet is standard, with optional Profibus DP, Modbus, Profinet and DeviceNet communication modules for controller integration.
Air quality and moisture control
The ABT 25 controls moisture; the process defines the rest of the treatment train.
The ABT 25 is rated at a 37 °F pressure dew point. Particle and oil requirements remain separate treatment decisions.
Water
Moisture
Use the 37 °F PDP as the refrigerated-dryer reference and compare it with the coldest downstream conditions and process requirement.
Particles
Particles
Add filtration based on the downstream equipment and required cleanliness rather than assuming the dryer removes particulates.
Oil control
Oil aerosol and vapour
The SK is a fluid-injected screw compressor. Processes with defined oil limits need an explicitly engineered treatment train and acceptance criterion.
Drainage
Condensate
The dryer includes electronically controlled condensate drainage. Site collection and disposal still require proper installation planning.
Dew point
Cold piping / low dew point
If downstream piping sees temperatures near or below the refrigerated-dryer dew point, qualify a lower-dew-point drying strategy.
Qualification
Process acceptance
For finishing, food, instrumentation or other sensitive users, define the required ISO 8573-1 result from the process backwards before selecting treatment.
Ownership playbook
More capacity does not eliminate the need for practical service access.
The enclosure uses a removable left cover to open service access. Preserve that access, cooling airflow and drain routing when planning the room.
Access
Keep the left side serviceable
The compact package should not be boxed against permanent obstructions that prevent the service-access layout from working.
Cooling
Protect cooling airflow
Separate cooling paths depend on suitable room ventilation and clean cooling-air intake. Final ventilation requirements are confirmed for the installation.
Condensate
Plan condensate handling
Higher flow can mean significant condensate volume. Route drains into an approved collection/treatment path appropriate to the site.
Monitoring
Use controller information
Operational status, alarms and maintenance data should be incorporated into the site’s normal ownership routine rather than used only after a production interruption.
System integration sequence
Measure. Select. Engineer. Commission. Sustain.
The AIRCENTER SK packages more hardware into one footprint, but the compressed-air system still succeeds or fails at the application, pressure and distribution level.
Measure
Record the plant’s average, peak and minimum demand, operating schedule and pressure-sensitive users.
Select
Choose SK 15 or SK 20 and the pressure version from usable air demand, not nominal horsepower.
Engineer
Close electrical service, room ventilation, filtration, condensate, piping, storage role, service access and redundancy.
Commission
Verify loaded/unloaded behaviour, pressure at representative users, dryer operation, alarms and downstream pressure loss.
Sustain
Track pressure, demand growth, maintenance and air quality so the package remains matched to production.
Deployment configurations
Use the SK package where one integrated station simplifies a real plant-air requirement.
The same SK AIRCENTER can serve as a primary plant station, a decentralized source or part of a controlled multi-compressor system. The role determines storage, treatment, controls and redundancy.
Single station
Primary production air station
AIRCENTER SK can anchor a small or mid-size facility when measured demand, pressure and redundancy expectations fit the 15–20 hp package range.
Decentralized
Decentralized department
Place the package near a high-demand production area when doing so reduces distribution losses or isolates a distinct pressure/air-quality requirement.
Supplemental
Supplemental capacity
Add SK capacity to an existing system only with a coordinated pressure/control strategy so compressors do not fight one another.
Redundancy
Duty / standby architecture
Two correctly integrated packages can support redundancy, but controls, isolation, maintenance and receiver strategy must be deliberately engineered.
Air treatment
Filtered air package
Add filtration according to the target purity class and downstream process requirement.
Business-case framework
At SK capacity, operating conditions matter more than a simple equipment-price comparison.
Compare installed scope and lifecycle performance: compressor energy, required pressure, dryer power, pressure loss, maintenance, downtime exposure, treatment and distribution—not only the cabinet purchase price.
Capital
Installed scope
Compare an integrated SK package with the real installed cost of separate compressor, dryer, receiver, drains, piping and controls.
Energy
Operating energy
Use actual loaded/unloaded hours, demand profile and selected pressure version. Do not assign a generic annual savings figure.
Pressure
Pressure cost
Quantify the effect of unnecessary pressure and distribution loss using the site’s real demand and production pressure requirements.
Risk
Downtime exposure
If air loss stops production, include redundancy, storage, rental contingency and service response in the business case.
Application data package
The SK decision gets easier when the plant demand is documented.
Bring the actual air users, pressure requirement and site conditions. If current consumption is uncertain, an air-demand study can be more useful than carrying the old compressor size forward.
Air demand
Demand profile
Average, peak and minimum flow; operating hours; shift pattern; major air users; planned production growth.
Pressure
Pressure requirement
Required point-of-use pressure, existing setpoint, measured pressure drop and the most pressure-sensitive process.
Quality
Air quality
Required PDP, particle/oil sensitivity, existing treatment and any application-specific ISO 8573-1 requirement.
Site
Site utilities
Electrical service, room dimensions, ambient, ventilation, condensate route, piping size, receiver strategy and service-access constraints.
AIRCENTER SK FAQ
Questions that determine whether SK 15 or SK 20 belongs in the system.
Start with the model/pressure matrix, then close utilities, treatment and operating conditions for the selected installation.
Which AIRCENTER SK models are included?
AIRCENTER SK 15 and AIRCENTER SK 20 are the two package sizes on this page.
How much air do they deliver?
SK 15 delivers 70/59/48 acfm and SK 20 delivers 88/77/65 acfm at 125/160/217 psi respectively.
What receiver size is included?
Both SK AIRCENTER models include a 92.5-gallon receiver.
Which dryer is included?
Both SK packages use the ABT 25 refrigerated dryer.
What pressure dew point does the ABT 25 provide?
The ABT 25 provides a 37 °F pressure dew point.
Does the integrated dryer establish an ISO air-quality class?
No. The dryer controls moisture. Particle and oil classes depend on the complete treatment train and operating conditions.
Is SIGMA CONTROL 2 included?
SIGMA CONTROL 2 is included with the AIRCENTER SK package.
Can the SK be used as a decentralized station?
Yes, that can be a strong system role when local demand, piping distance and pressure losses justify a dedicated source.
What site details are finalized for the installation?
Electrical configuration, installed input power, protection, ventilation, filtration, networking options, service clearances, installation scope and commissioning conditions are finalized for the selected site.
AIRCENTER SK application review
Bring the demand profile—not just the 15 or 20 hp target.
Titan can qualify the AIRCENTER SK around measured or estimated air consumption, point-of-use pressure, shift profile, ABT dryer requirement, receiver role, electrical service, filtration, room conditions and future production growth.
Useful inputs: current compressor model, cfm/acfm demand, required pressure, shift hours, major pneumatic equipment, air-quality requirement, existing storage/treatment, piping size, electrical service, room dimensions, ambient, ventilation and redundancy needs.