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How to Choose a Screw Air Compressor for Machining Parts Cleaning & Blowing
Release time:
2026-03-02
Complete guide to choosing the right screw air compressor for machining parts cleaning, parts blowing, dust removal and chip removal in mechanical processing workshops. Learn ideal pressure, flow, power and configuration.
How to Choose a Screw Air Compressor for Machining Parts Cleaning & Blowing?
In mechanical processing and machining workshops, parts cleaning and blowing is one of the most common and essential applications.
Using compressed air to remove cutting fluid, chips, dust, oil and debris from machined parts ensures product quality, surface cleanliness and subsequent assembly efficiency.
- Insufficient blowing pressure → uncleaned parts
- Unstable air pressure → inconsistent cleaning effect
- High energy consumption → increased production cost
- Frequent breakdowns → production downtime
1. Ideal Pressure for Machining Parts Cleaning
- 7 bar: Basic cleaning, light dust, small parts blowing.
- 8 bar: Stronger blowing for deep holes, blind holes, complex structural parts, iron chips and cutting fluid residue.
- Over 8 bar: Wastes energy and may damage thin-walled parts.
- Under 6 bar: Cannot clean parts thoroughly.
2. Recommended Flow & Power (Most Common Configurations)
Parts cleaning usually requires continuous, stable airflow, not peak flow. Below are the most practical selections for machining workshops:
Small machining shop (1–3 blowing guns)
- Flow: 1.2–2 m³/min
- Power: 7.5–11 kW screw air compressor
Medium machining workshop (3–6 blowing stations)
- Flow: 3–6 m³/min
- Power: 15–30 kW screw air compressor
Large machining factory (central air supply)
- Flow: 6–15 m³/min
- Power: 37–75 kW screw compressor (VFD preferred)
3. Compressor Type Best for Machining Parts Cleaning
Oil-injected screw air compressor (BEST CHOICE)
- Stable pressure for continuous parts blowing
- High reliability for 24-hour workshop operation
- Lower cost than oil-free compressors
- Easy maintenance
- Suitable for dusty machining environments
4. Must-Have Air Treatment (Critical for Machining)
1. Refrigerated air dryer
Remove moisture to prevent water stains on parts.
2. 3-stage filtration system
- Coarse filtration
- Precision oil removal filter
- Dust removal filter
3. Air receiver tank
Stabilize pressure and reduce moisture.
5. Key Features for Machining Workshop Environment
Machining shops are typically dusty, oily, with high temperature.
Your compressor should have:
- Strong dustproof design
- High-efficiency cooling system
- IP54 protection grade
- Anti-vibration base
- Easy access for maintenance
6. Common Mistakes to Avoid
- Using piston compressors for long-term parts blowing (unstable pressure, high failure rate)
- Choosing over-high pressure (10 bar+) which wastes power
- Skipping air dryer → parts have water stains
- Under-sizing flow → insufficient air for multiple stations
7. Quick Selection Summary (For Customers)
- Pressure: 7–8 bar
- Type: oil-injected screw air compressor
- Control: VFD / permanent magnet for energy saving
- Matching: dryer + precision filters + air tank
- Power: 7.5–75 kW (based on blowing stations)
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