PRODUCT DETAILS
SMC AL40-04-A Air Filter Lubricator – New & Factory Sealed
Product Overview
The SMC AL40-04-A Filter Lubricator is a high-performance pneumatic air preparation component designed to deliver clean, lubricated compressed air for industrial automation systems. As part of SMC’s trusted AL Series, this unit ensures stable lubrication, reduced component wear, and extended service life of downstream pneumatic equipment.
This unit is brand new, original SMC, and factory sealed, ideal for OEM replacements, maintenance stock, or new pneumatic system builds.
Key Features & Benefits
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✅ Integrated Filtration & Lubrication
Removes contaminants while supplying a consistent oil mist for smooth actuator operation. -
✅ Stable Oil Supply Control
Adjustable oil feed ensures precise lubrication even under fluctuating air flow conditions. -
✅ Reduced Equipment Wear
Proper lubrication minimizes friction, extending the lifespan of valves, cylinders, and air tools. -
✅ Industrial-Grade Construction
Built for continuous operation in demanding factory environments. -
✅ Easy Maintenance Design
Transparent bowl allows quick visual inspection of oil level and contamination.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | SMC |
| Model | AL40-04-A |
| Series | AL Series |
| Port Size | 1/2 inch (04) |
| Operating Pressure Range | Up to 1.0 MPa |
| Recommended Operating Pressure | 0.05 – 0.85 MPa |
| Ambient & Fluid Temperature | 5 to 60°C |
| Oil Type | ISO VG32 (Recommended) |
| Bowl Material | Polycarbonate |
| Mounting Orientation | Vertical |
| Condition | New |
| Packaging | Original SMC factory sealed |
Typical Applications
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Pneumatic control systems
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Automated production lines
-
Air cylinders & solenoid valves
-
CNC machinery
-
Packaging and assembly equipment
-
Industrial air tool lubrication

📊 SMC Air Preparation Series Comparison (AC / AF / AR / AL)
| Item / Series | AC Series | AF Series | AR Series | AL Series (e.g. AL40-04-A) |
|---|---|---|---|---|
| Primary Function | Air Filtration | Filtration + Pressure Regulation | Filtration + Regulation + Lubrication | Filtration + Lubrication |
| Main Purpose | Remove water & particles | Provide clean and stable air pressure | Stable pressure with oil mist lubrication | Supply lubricated air without pressure regulation |
| Pressure Regulator Included | ❌ No | ✅ Yes | ✅ Yes | ❌ No |
| Lubrication (Oil Mist) | ❌ No | ❌ No | ✅ Yes | ✅ Yes |
| Recommended Downstream Equipment | Valves, cylinders (pre-treatment) | Precision pneumatic systems | Cylinders, air tools, actuators | Cylinders, valves, air tools |
| Pressure Stability | Low | Medium | High | Low |
| Oil Feed Adjustment | N/A | N/A | Adjustable | Adjustable |
| Air Quality Improvement | Basic filtration | Filtration + pressure control | Filtration + pressure control + lubrication | Filtration + lubrication |
| System Complexity | Low | Medium | High | Medium |
| Typical Installation | Standalone or system inlet | After air filter | Integrated air prep unit | After filter or regulator |
| Common Configuration | AC only | AC + AF | AC + AR | AC + AL |
| Primary Value | Protect pneumatic components | Maintain stable air pressure | Reduce wear & ensure smooth operation | Reduce friction & extend component life |
🛠 Quick Selection Guide
✔ Need clean air only
→ AC Series
✔ Need clean air + stable pressure
→ AF Series
✔ Need clean air + pressure regulation + lubrication
→ AR Series
✔ Need clean air + lubrication (no pressure regulation required)
→ AL Series (e.g. AL40-04-A)
📌 Typical Application Examples
| Application Scenario | Recommended Solution |
|---|---|
| General air filtration | AC |
| Precision pneumatic control systems | AC + AF |
| Pneumatic cylinders & air tools with pressure control | AC + AR |
| Lubrication required, pressure controlled upstream | AC + AL (AL40-04-A) |
🔑 Selection Logic Summary
Filtration first, pressure regulation second, lubrication as needed.
Air preparation systems typically follow this sequence:
Filter → Regulator → Lubricator
Why Choose SMC AL40-04-A?
SMC is a global leader in pneumatic technology, known for precision engineering and long-term reliability. The AL40-04-A is a proven solution for maintaining air quality and lubrication consistency, helping reduce downtime and maintenance costs in industrial operations.
Keywords
SMC AL40-04-A, SMC Filter Lubricator, AL40-04-A New Sealed, Pneumatic Air Lubricator, SMC Air Preparation Unit, Industrial Air Lubricator, SMC AL Series

