Box TypeFixed Speed
Box · Fixed Speed
Space-saving enclosed screw compressors built for continuous duty with IP54/IP55 motor protection options.
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SPERAN
Screw Air CompressorsBuilt for Industrial Duty
Fixed-speed and permanent-magnet VFD screw compressors in box-type, two-in-one, and four-in-one configurations—manufactured in Taizhou for global distributors and factories.
Product Families
Complete screw compressor range
Choose by configuration and drive type—box cabinets, compressor and tank packages, or complete four-in-one air stations.
Box TypePermanent Magnet VFD
Box · PM VFD
Permanent-magnet variable-frequency drive matches motor speed to real air demand for lower energy use and smoother pressure.
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Two-in-OneFixed Speed
2-in-1 · Fixed Speed
Integrated screw compressor and tank packages that shorten installation time for workshops and light industry.
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Two-in-OnePermanent Magnet VFD
2-in-1 · PM VFD
Permanent-magnet VFD compressor plus tank—efficient for intermittent duty and ready-to-ship packages.
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Four-in-OneFixed Speed
4-in-1 · Fixed Speed
Complete compressed-air train in one footprint—ready for buyers who want dry, cleaner air without separate plant-room assembly.
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Four-in-OnePermanent Magnet VFD
4-in-1 · PM VFD
Integrated air station with PM VFD screw module, dryer, filtration, and tank for efficient, ready-to-run performance.
View series →Why Screw
Built for continuous industrial duty.
SPERAN screw compressors are engineered for multi-shift factories and workshops that need stable pressure, lower maintenance, and clear choices between fixed-speed and permanent-magnet VFD drives.
Explore the technologyContinuous industrial duty
Screw rotors are built for multi-shift operation—unlike piston units that struggle with long continuous runs.
Lower energy under the right load
PM VFD packages match motor speed to demand, often cutting energy use versus piston or unloaded fixed-speed cycles.
Fewer wear parts
No piston rings or valve plates in the compression chamber—maintenance is simpler over the machine life.
Quieter plant floors
Typical screw cabinet noise of about 65–75 dB supports more comfortable workshop environments.
Core Components
Top-tier components. Strict factory QC.
High-quality core parts and disciplined quality control reduce downtime risk for industrial users worldwide.
BAOSI Airend
High-efficiency screw airend under full-load testing
Jiangtian Motor
Industrial motors with strong IP protection options
PLT Controller
Reliable industrial control platform for stable operation
2-Year Critical Warranty
Extended coverage focus on motor & airend durability
Manufacturing Base
Manufactured in Taizhou, shipped worldwide.
Located in Taizhou—known as China's city of compressors—SPERAN combines screw compressor assembly, showroom verification, and containerized shipping for international customers.
Factory Video
Workshop and screw compressor production
Insights
Technical insights for better selection.
2026-04-12 · 7 min
Screw vs Piston Air Compressors: Which Fits Industrial Duty?
Compare efficiency, maintenance, noise, and duty cycle of screw and piston compressors for workshops and factories.
2026-05-03 · 6 min
PM VFD vs Fixed-Speed Screw Compressors: Energy and Pressure Stability
Understand how permanent-magnet variable-frequency drives differ from fixed-speed screw compressors in start current, pressure control, and savings.
2026-05-20 · 8 min
How to Choose a Four-in-One Screw Air Compressor Station
How to select an integrated compressor, dryer, filter, and tank package for workshops and industrial projects.
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