USA 
Malaysia
Spanish
Thailand
Indonesia
India
NX Series 15-185kW / 20-250HP
15-185kW DIRECT DRIVE / FIXED AND VARIABLE DRIVE
ENGINEERED FOR PERFORMANCE, BUILT FOR RELIABILITY
When it comes to compressed air, performance and reliability aren’t optional — they’re essential. That’s why the FS-Curtis NX Series rotary screw compressors are trusted by industries worldwide. NX Direct Drive covers a broad range from 15 kW to 185 kW (20–250 HP), and the NX Series Direct Drive is engineered to deliver consistent, dependable air with the efficiency today’s operations demand.
With quiet operation, intelligent controls, and rugged construction, the NX Series provides the performance you can trust and the legendary reliability FS-Curtis has built its name on for more than 170 years.
Contact your local FS-Curtis Authorized Distributor for a quote today!
Description
The award-winning FS-Curtis NX Series is designed to deliver outstanding performance with rock-solid reliability, shift after shift. Built with rugged components, advanced engineering, and precision manufacturing, every NX model is made to run at full capacity in the most demanding environments.
Available in both fixed-speed and variable-speed (NXV 15-185kW / 20-250HP) models, the NX Series Direct Drive adapts to your operation’s specific air demand while reducing energy costs. At the core of the system, the iCommand-Touch+ controller provides total visibility and control, enabling you to monitor performance, track trends, and ensure maximum uptime.
The NX Series offers the performance you can trust and the reliability you need to keep your business moving forward.
NX Series 15-185kW / 20-250 HP
EFFICIENT DIRECT DRIVE SYSTEM
Powerful design for maximum efficiency and reliability
- Delivering more power directly to the airend
- Fewer moving parts reduces service time and costs.
- Ensures the motor and airend run at optimal speed, reducing stress and vibration, and enhances reliability.
dBA SHIELD NOISE REDUCTION
Designed for quiet, high-performance operation
- Integration of centrifugal blower and drive motors ensures smooth, reliable performance.
- Extra-thick, oil-proof sound insulation reduces noise levels dramatically.
- Ideal for noise-sensitive environments where quiet operation matters.
eCOOL® TECHNOLOGY
The ultimate in system protection and reliability
- Compartmentalized airflow design and standard aftercooler keep components cool.
- Protects critical parts from compressor-generated heat.
- Extends component life, reduces downtime, and improves long-term reliability.
QUALITY COMPONENTS
Built for dependable performance
- Standard TEFC motor shields against dirty ambient air, improving efficiency and motor life.
- Spin-on air/oil separator simplifies maintenance and delivers 1–3 PPM oil carryover for lower costs and higher air quality.
- Modulation control standard on 4–15 kW models for added efficiency.
SUPERIOR PACKAGE DESIGN
Designed for low cost of ownership and easy service
- Compact, space-saving design with small footprint.
- Delivers pulsation-free air and 100% continuous duty performance.
- Extended service intervals reduce maintenance costs and downtime.
- Provides more CFM per horsepower—greater efficiency at full load.
- Improved air quality
- Exclusive FS-Curtis airends with advanced rotor profiles maximize efficiency and reliability.
PRECISION-BUILT AIREND
Engineered for peak efficiency and long-term dependability
- Precision-cut rotor profiles maximize air output and efficiency.
- Exclusive FS-Curtis design ensures consistent, reliable performance across all sizes.
iCOMMAND-TOUCH+ CONTROLLER
Intuitive intelligence for better performance
- Full-color touchscreen interface make monitoring and adjustments simple.
- Real-time trending, performance tracking, and system alerts ensure reliability.
- Integrates easily with plant systems for complete control.
NXD15-185 Fixed Speed
| Model | Power | Capacity FAD (CFM) | Sound Level | Dimensions | Weight | |||
| kW / HP | 100 psi | 125 psi | 150 psi | 175 psi | dB(A) | L x W x H in. | lbs. | |
| NXD15 | 15 / 20 | 96 | 88 | 73 | 62 | 70 | 57 × 38 × 60 | 1449 |
| NXD18 | 18 / 25 | 114 | 115 | 92 | 78 | 70 | 57 × 38 × 60 | 1552 |
| NXD22 | 22 / 30 | 136 | 124 | 111 | 92 | 70 | 57 × 38 × 60 | 1592 |
| NXD30 | 30 / 40 | 201 | 201 | 171 | 142 | 70 | 63 x 41 x 66 | 1663 |
| NXD37 | 37 / 50 | 251 | 226 | 197 | 182 | 70 | 63 x 41 x 66 | 1771 |
| NXD45 | 45 / 60 | 288 | 263 | 246 | 233 | 72 | 78.7 x 49.2 x 68.9 | 2911 |
| NXD55 | 55 / 75 | 356 | 324 | 293 | 270 | 74 | 95.3 x 57.4 x 72.8 | 5191 |
| NXD75 | 75 / 100 | 495 | 436 | 416 | 382 | 74 | 95.3 x 57.4 x 72.8 | 5456 |
| NXD90 | 90 / 125 | 553 | 492 | 448 | 424 | 78 | 85.8 x 52.4 x 72.8 | 4090 |
| NXD110 | 110 / 150 | 761 | 703 | 616 | 557 | 78 | 115.7 x 67.3 x 68 | 8157 |
| NXD160 | 160 / 200 | 1038 | 938 | 826 | 760 | 78 | 114.2 x 73.2 x 76.6 | 8157 |
| NXD185 | 185 / 250 | 1103 | 1026 | 927 | 815 | 78 | 114.2 x 73.2 x 76.6 | 8267 |
NXV18-185 Variable Speed
| Model | Power | Pressure Range | Capacity FAD (CFM) | Sound Level | Dimensions | Weight | |
| kW / HP | psi | Min. (psi) | Max. (psi) | dB(A) | L x W x H in. | lbs. | |
| NXV18 | 18 / 25 | 100 – 175 | 32 | 112 | 67 | 50 × 35 × 60 | 1469 |
| NXV22 | 22 / 30 | 100 – 175 | 32 | 128 | 60 | 50 × 35 × 60 | 1486 |
| NXV30 | 30 / 40 | 100 – 175 | 48 | 183 | 65 | 54 × 37 × 67 | 2051 |
| NXV37 | 37 / 50 | 100 – 175 | 48 | 227 | 71 | 54 × 37 × 67 | 2051 |
| NXV45 | 45 / 60 | 100 – 150 | 64 | 288 | 72 | 78.7 x 49.2 x 68.9 | 2911 |
| NXV55 | 55 / 75 | 100 – 150 | 71 | 345 | 74 | 95.3 x 57.4 x 72.8 | 5191 |
| NXV75 | 75 / 100 | 100 – 150 | 117 | 499 | 74 | 95.3 x 57.4 x 72.8 | 5456 |
| NXV90 | 90 / 125 | 100 – 150 | 117 | 567 | 78 | 85.8 x 52.4 x 72.8 | 4090 |
| NXV110 | 110 / 150 | 100 – 150 | 175 | 689 | 78 | 115.7 x 67.3 x 68 | 8157 |
| NXV160 | 160 / 200 | 100 – 150 | 333 | 1030 | 78 | 114.2 x 73.2 x 76.6 | 8157 |
| NXV185 | 185 / 250 | 100 – 150 | 349 | 1104 | 78 | 114.2 x 73.2 x 76.6 | 8267 |
OPTIONAL DEMANDSMART ENERGY MANAGEMENT SYSTEM (8-185 kW)
The ideal combination of variable speed drive, iCommand-Touch+ controller, and drivetrain
- Matches output to demand for outstanding energy savings, day after day.
- Reduces lifecycle costs by lowering wear on components
- Stabilizes system pressure, improving process consistency.
- Increases overall system efficiency by delivering the right amount of air with less energy consumed.
OPTIONAL ULTRAPACK (4kW-22kW)
All-in-one convenience for space and cost savings
- Includes integrated refrigerated dryer and prefilter.
- Saves valuable floor space and reduces installation time and costs.
- Provides clean, dry, air from a single, compact package.
OPTIONAL SMARTCONNECT®2.0
Smart remote monitoring for greater reliability and efficiency
- Real-time remote monitoring from any connected device – stay informed whether you-re on site or off.
- Predictive maintenance alerts help you plan service in advance, reducing downtime and costly surprises.
- Tracks system performance trends to optimize efficiency and energy use.
- Secure, cloud-based platform provides data access for both operators and service teams.
- Helps extend equipment life while lowering total cost of ownership.
OPTIONAL FACTORY FILL FOOD GRADE LUBRICANT
Clean, safe, and complaint performance for sensitive industries
- 100% food-grade, H1-rated lubricant designed for rotary screw compressors.
- Provides reliable lubrication while meeting FDA, USDA, and NSF requirements.
- Protects against wear, extends airend life, and ensures consistent performance.
- Ideal for food & beverage, pharmaceutical, and other industries requiring contaminant-free air.
NXGEN® Warranty – Industry-Leading Protection
At FS-Curtis, we don’t just promise performance and reliability — we guarantee it. That’s why every NX Series rotary screw compressor is backed by the industry’s first extended warranty program: the NXGEN® Warranty.
5 Years Coverage – Major components such as the electric motor, separator tank, air/oil cooler, and VFD/controller are fully covered for five years — non-prorated.
10 Years Coverage – Our precision-built airends are protected for a full 10 years of peace-of-mind performance.
Since 1854, FS-Curtis has been building compressors known for durability and long service life. The NXGEN Warranty reflects our confidence in what we manufacture, delivering the most comprehensive protection in the industry.
How to Qualify for NXGEN Coverage:
Follow the required maintenance schedule.
With NXGEN Extended Warranty, you can be confident your NX Series compressor will deliver dependable performance, lower cost of ownership, and long-lasting reliability — backed by more than 170 years of FS-Curtis expertise.
Need to schedule your routine maintenance, contact your local Authorized FS-Curtis Distributor today!
Financing Options – Flexible Solutions for Every Operation
Investing in reliable compressed air shouldn’t slow down your business. That’s why FS-Curtis offers flexible financing options designed to make owning an NX Series compressor easier and more affordable.
Why Choose FS-Curtis Financing?
Conserve Capital – Keep cash flow available for other business needs while still getting the equipment you trust.
Flexible Terms – Choose from a variety of payment plans that fit your budget and operational needs.
Fast & Simple Approval – Streamlined application process gets you approved quickly so you can get your system running sooner.
Upgrade with Confidence – Financing makes it easier to invest in the latest technology, like SmartConnect® 2.0 or UltraPack options, without large upfront costs.
Protect Your Investment – Pair financing with our NXGEN® Warranty for maximum peace of mind.
With FS-Curtis financing, you get the performance and reliability you need today while paying in a way that works best for your business.
