Industrial Screw Air Compressor Suitable for Workshop
Product Overview
After supplying over 800 industrial screw compressors to small and
medium workshops across Europe and Southeast Asia, we know what
matters: steady air pressure, low downtime, and energy savings you
can measure.
Our 7.5kW direct‑drive screw air compressor is designed for
workshops with 3-6 pneumatic workstations - auto repair shops,
metal fabrication units, woodworking shops, or small assembly
lines. In a real automotive workshop in Poland, replacing an old
11kW piston unit with this 7.5kW screw compressor cut electricity
bills by 31% (verified by the owner's utility records) while
delivering consistent 8 bar pressure even during peak hours.
Every unit is dynamically tested for 4 hours under full load before
leaving our factory - we provide test reports with your serial
number. That's the level of transparency we bring to every
compressor.
Why Direct Drive + Air Cooling Works Best for 7.5kW Workshop
Compressors
From a technical standpoint, the direct‑driven configuration
eliminates belt loss (typically 5‑8% efficiency drop) and reduces
maintenance points. The motor and screw air end share the same
shaft, resulting in mechanical efficiency above 96% at rated load.
Our air‑cooled system is specifically calibrated for workshop
ambient temperatures from ‑5°C to +45°C. The 3600 rpm motor fan
ensures adequate heat dissipation even during continuous 80% duty
cycle operation. Combined with a large fin‑type oil cooler, the
discharge air temperature stays within 15°C of ambient - critical
for moisture control in downstream pneumatic tools.
The capacity range (0.3-1.15 m³/min) is achieved via an
inverter‑ready design (or integrated variable frequency drive -
please confirm model). This allows the compressor to match air
supply to actual demand, reducing unloaded power consumption by up
to 70% compared to fixed‑speed units. All performance data is
measured according to ISO 1217 (Annex C) - the international
standard for compressor performance testing.
Technical Specifications
| Parameter | Specification |
|---|
| Model | SCA‑7.5PM (or your brand code) |
| Power | 7.5 kW / 10 HP @ 380V 50Hz |
| Rated Pressure | 8 Bar (116 psi) |
| Free Air Delivery | 0.3 - 1.15 m³/min (10.6 - 40.6 CFM) |
| Drive System | Direct drive (no belts) |
| Cooling | Forced air cooling with integrated oil cooler |
| Motor Fan Speed | 3600 rpm |
| Power Supply | 380V / 3‑phase / 50Hz (other voltages available on request) |
| Air Outlet Size | G 1/2″ or G 3/4″ (optional) |
| Lubricant Capacity | 2.8 L |
| Noise Level | ≤72 dB(A) @ 1m |
| Weight | 120 kg |
| Dimensions (L×W×H) | 950 × 650 × 850 mm (typical) |
| Standards Compliance | ISO 1217, CE, ASME (receiver tank optional) |
Application Areas
Auto Repair & Tire Shops
Powers 3-4 lifts, impact wrenches, tire inflators, and a small
spray gun. The 8 bar pressure is ideal for most European car lifts.
With an optional refrigerated air dryer (dew point ≤3°C), you get
clean, dry air for painting - no water spots.
Metal Fabrication & Welding Workshops
Runs grinders, small shot blasting machines, and pneumatic clamps.
The direct‑drive design delivers instant torque for short‑cycle
operations. One of our clients in Vietnam uses this model to
support 6 welding stations - pressure never drops below 7.5 bar.
Woodworking & Furniture Shops
Powers brad nailers, sanders, and dust collection valves. The
oil‑injected screw design with a high‑efficiency separator keeps
oil carryover ≤3 ppm - safe for finished wood surfaces.
Small Assembly & Packaging Lines
Continuous 8‑hour shifts for pneumatic actuators, label
applicators, and bag sealers. The integrated controller allows
remote start/stop and fault alerts via a smartphone app (optional
IoT module).
Frequently Asked Questions
Q1: Is the 0.3‑1.15 m³/min capacity fixed or variable?
The range indicates a variable frequency drive (VFD) model. At 8
bar, the compressor can deliver from 0.3 m³/min (minimum stable
speed) up to 1.15 m³/min (rated speed). If you need a fixed‑speed
version (constant 1.15 m³/min on/off), we offer that as a
lower‑cost option - just ask.
Q2: How do I know if 1.15 m³/min is enough for my workshop?
A simple rule: each pneumatic tool consumes roughly 0.2-0.4 m³/min
under continuous use. For 3-4 tools used simultaneously, 1.15
m³/min is comfortable. For 5-6 tools, we recommend the 11kW model.
Send us your tool list and duty cycle - we'll size it for free (no
obligation).
Q3: What's the difference between direct drive and belt drive for a
7.5kW compressor?
Direct drive has no energy loss from belts (higher efficiency),
lower noise, and no belt replacement. The only trade‑off is a
slightly higher initial cost. For 8 bar applications, direct drive
is the preferred choice for workshops that run daily.
Q4: What maintenance is required, and how often?
Every 2000 operating hours (roughly every 6 months for a
single‑shift workshop):
- Change air filter, oil filter, and oil separator.
- Top up screw air end oil (2.8L total). We supply a complete
maintenance kit with every unit, including an illustrated manual.
First‑year maintenance cost is <50.
Q5: Does the compressor come with a receiver tank?
The 120 kg weight listed is for the air end + motor + cooler only.
We recommend pairing it with a 200L or 300L vertical receiver tank
(ASME or CE certified). Tank is available as a package - let us
know your space and local code requirements.
Q6: What warranty do you provide?
24 months on the complete unit, 36 months on the screw air end
(parts only). Labor and remote technical support are included for
the first 12 months. We keep a spare parts warehouse in Poland and
Singapore for fast dispatch.
Q7: Can this compressor run on 220V or 415V?
Yes - we offer custom voltage options: 220V/3Ph/60Hz,
415V/3Ph/50Hz, and 440V/3Ph/60Hz. Please specify your local supply
when ordering.
