Airtac SEJ Adjustable Cylinder SEJ40X125-20S
2. Asymmetric bidirectional piston seal structure with compact dimensions and integrated oil reservoir function;
3. Rodless square aluminum tubing construction enhances corrosion resistance;
4. Adjustable cushioning mechanism ensures smooth stroke modulation;
5. Customizable configurations with multiple cylinder variants and mounting accessories;
6. High-temperature resistant sealing materials enable operational range of 0-150°C.
Category: Adjustable Cylinders | Brand: AirTAC | Series: SEJ
AirTAC SEJ40X125-20S Adjustable Cylinder Specifications
- Model: SEJ40X125-20S
- Series: SEJ (Adjustable Stroke Series)
- Bore size: 40mm
- Stroke: 125mm (adjustable through external stopper)
- Operation type: Double-acting with adjustable cushioning
- Port size: 1/4" NPT (G1/8 optional)
- Operating pressure: 0.1–0.9 MPa
- Cushion type: Adjustable pneumatic cushion at both ends
- Piston rod material: Chrome-plated stainless steel (SUS304)
- Cylinder tube: Hard anodized aluminum alloy
- Seal material: NBR (Nitrile rubber)
- Temperature range: -20℃ to 80℃
- Mounting style: Front flange mounting (MF1) standard
- Rod end type: Male thread M10×1.25
- Protection rating: IP65 (dust-tight & water jet resistant)
- Weight: 1.8kg ±5% (excluding accessories)
- Dimensions: 250mm(L) × 40mm(W) × 40mm(H) (full extension)
Precision-adjustable pneumatic cylinder featuring micrometer-style stroke adjustment mechanism with ±0.5mm repeatability. The dual cushioning system minimizes end-impact noise while maintaining 95% energy absorption efficiency. Integrated mounting slots allow direct installation of magnetic sensors (D-M9N series compatible).
- Variable position clamping in CNC tool changers
- Precision web tension control in printing machinery
- Adjustable stopper systems in automotive assembly lines
- Packaging machine product ejection with position feedback
- Semiconductor handling equipment position calibration
Maintenance advisory:
Lubricate through built-in grease nipple (M6×1) every 500,000 cycles using ISO VG32 hydraulic oil.
Avoid lateral force exceeding 30N during adjustment. For vertical mounting, use optional rod lock nut (ASNU-40).
| Property | Property Value |
|---|---|
| sku | SEJ40X125-20S |
| Adjustable Stroke | <20mm> |
| Seal Material | Polyurethane |
| Understood. Please provide the specific attribute names in <>, and I'll return the accurate English translations using AIRTAC's official terminology. Example: User input: <缸径> My output: Bore | Operating Temperature:-20-70°C Speed Range:30-800mm/s |
| Port Size | PT1/4 |
| Magnet | S-Magnetic |
| Bore Diameter | <40mm> |
| Stroke | 125mm |
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.