STRONG. RELIABLE. AFFORDABLE. BUILT TO LAST.
VSD VARIABLE
SPEED DRIVE
For 16 years, our VSD Screw Compressors have been the backbone of industries across Africa - engineered to match your exact air demand, eliminate waste, and save up to 35% on energy versus fixed-speed equivalents.
ABOUT THE VSD RANGE
SMART SPEED
SERIOUS SAVINGS
At Supa-Air, we do more than build compressors. We engineer them to trhive in Africa’s thoughest environments. Our VSD Compressor range automatically adjusts motor speed to match actual air demand – so you only use the energy you actually need, every shift.
The result: up to 35% energy savings versus fixed-speed equivalents, lower electricity bills, reduced component stress, and a compressor that lasts significantly longer thanks to fewer stop/start cycles and smooterh startups.
Available from 22kW to 250kW across 12 models – with an integrated Star/Delta backup system that no other competitor offers as standard.
WHY CHOOSE VSD
WHY VARIABLE
SPEED DRIVE?
Fixed Speed comperssors run at full power regardless of air demand – wasting energy time demand drops. VSD technology eliminates that waste entirely, delivering the right amount of air at the right speed, every time.
35%
ENERGY SAVINGS VS FIXED SPEED
VSD adjusts speed to match actual air demand – you only use the power you need, every shift. The savings compound across every shift, every week, every year.
SMARTER VARIABLE SPEED CONTROL
Automatically adjusts motor sped to match actual air demand - eliminating waste at every level of production. No more running at full power when half power is all you need.
ENERGY EFFICIENT PERFORMANCE
Cuts unnecessary power use, lowering electricity bills and lifetime operating costs significantly. The energy savings alone often pay back the compressor cost within 2-3 years.
REDUCED COMPONENT STRESS
Smooth startups and fewer stop/start cycles extend the life of all key components - bearings, seals, air ends, and electrical component all last significantly longer.
OVERSIZED AIR ENDS
Intentionally oversized air ends run at slower RPMs - no gears needed. Cooler air, less wear, and an extended lifespan that compunds the long-term value of your investment.
DESIGNED FOR AFRICAN CONDITIONS
From intense heat to pervasive dust, purpose-built for resilience and longevity in Africa's toughest environments - not reconfigured from European specifications.
16+ YEARS PROVEN
For over 16 years, Supa-Air VSD compressors have been the backbone of industries across the continent - proving themselves day in and day out, even in the harshest conditions.
UNIQUE TO SUPA-AIR VSD
VSD WITH INTEGRATED
STAR/DELTA BACKUP SYSTEM
Our VSD compressor is equipped with an integrated backup Star/Delta starting system, installed alongside the VSD. This built-in redundancy ensures operational continuity in the event of a VSD failure.
Should the VSD malfunction or require repair, the system can be manually switched over to Star/Delta mode – allowing the unit to continue wihout interruption. This significantly reduces the risk of unplanned downtime and ensures ongoing productivity while the VSD is being serviced.
The seamless switchover capability between VSD and Star/Delta modes provides both flexibility and reliability, making this unit well-suited for critical operations where equipment uptime is essential.
EFFICIENT. RELIABLE. COST-SAVING
TECHNICAL SPECIFICATIONS
SA Series · Single-Stage VSD · 22kW – 250kW · All specifications from official Supa-Air product documentation.
| Air Flow (m³/min) | Power | Noise | Connection | Dimension (mm) | Weight | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Model No. | 0.7 MPa | 0.8 MPa | 1.0 MPa | 1.3 MPa | (kW) | (dB) | BSP / DN | L (mm) | W (mm) | H (mm) | (kg) |
| SA-22 | 4.15 | 3.7 | 3.2 | 2.8 | 22 | 68 | G1 | 1330 | 830 | 1265 | 410 |
| SA-30 | 5.7 | 5.2 | 4.5 | 3.8 | 30 | 68 | G1 | 1330 | 830 | 1265 | 520 |
| SA-37 | 6.9 | 6.5 | 5.6 | 4.9 | 37 | 69 | G1 1/2 | 1500 | 940 | 1415 | 655 |
| SA-45 | 8.1 | 7.5 | 6.75 | 5.9 | 45 | 70 | G1 1/2 | 1500 | 940 | 1415 | 730 |
| SA-55 | 10.3 | 9.5 | 8.3 | 7.8 | 55 | 70 | G2 | 1600 | 1060 | 1470 | 950 |
| SA-75 | 13 | 12.8 | 11 | 9.5 | 75 | 72 | G2 | 2000 | 1120 | 1590 | 1170 |
| SA-90 | 16.7 | 15.5 | 14 | 12.5 | 90 | 72 | G2 | 2000 | 1120 | 1590 | 1390 |
| SA-110 | 20.8 | 19.6 | 17.8 | 15.5 | 110 | 72 | DN65 | 2400 | 1630 | 1980 | 2280 |
| SA-132 | 24.1 | 23.2 | 19.5 | 17 | 132 | 72 | DN65 | 2400 | 1630 | 1980 | 2430 |
| SA-160 | 28.8 | 27.8 | 23 | 20 | 160 | 72 | DN80 | 2800 | 1828 | 2150 | 2950 |
| SA-185 | 33.2 | 31.2 | 27.5 | 25.8 | 185 | 72 | DN80 | 2800 | 1828 | 2150 | 3073 |
| SA-250 | 43 | 41.5 | 38 | 34.9 | 250 | 76 | DN100 | 4260 | 2182 | 2170 | 5200 |
APPLICATIONS
INDUSTRIES
SERVED.
WORKSHOPS
Intermittent demand means a fixed-speed unit wastes energy between cycles. VSD idles efficiently and ramps up instantly on demand.
MANUFACTURING
Variable demand across shifts makes VSD the ideal choice. Significant energy savings where air demand fluctuates throughout the day.
AUTOMOTIVE INDUSTRY
Consistent pressure for spray booths and assembly tools, with significant energy savings over traditional fixed-speed installations.
FOOD & BEVERAGE
Consistent pressure, quiet operation, and energy efficiency. Pair with Supa-Air air treatment systems for ISO 8573-1 compliant air quality.
MINING & HEAVY INDUSTRY
Heavy-duty continuous operation with variable demand profiles - VSD eliminates start-up peaks that damage electrical infrastructure.
AGRICULTURAL SECTOR
Reliable, energy-efficient operation for grain handling, irrigation control, and processing facilities with variable demand profiles.
ALSO FROM SUPA-AIR
FIXED-SPEED
FIXED-SPEED SCREW COMPRESSORS
Strong. Reliable. Affordable. Built to Last.
7.5kW to 250kW across 14 models. The proven African workhorse for constant-demand applications.
TWO-STAGE
TWO-STAGE COMPRESSORS
Built for Africa. Engineered for Maximum Efficiency.
55kW to 355kW. Two compression stages with inter-stage cooling. 15-20% more efficient for heavy industrial applications.
AIR
AIR TREATMENT & DRYERS
Clean Air. Every Time.
Refrigerated dryers, 5-stage filtration, and pressure vessels matched to the full range. ISO 8573-1 compliant.