Airtac SEJ Adjustable Cylinder SEJ40X250-50
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 SEJ40X250-50 Adjustable Cylinder Specifications
- Model: SEJ40X250-50
- Series: SEJ (Adjustable Stroke Series)
- Bore Size: 40mm
- Stroke: 250mm (adjustable through stopper mechanism)
- Mounting Style: Standard (Basic type with front/rear flange options)
- Operating Pressure: 0.15–0.8 MPa
- Cushion Type: Adjustable rubber buffer (both ends)
- Port Size: PT1/4 (G1/4 optional)
- Piston Rod Diameter: 16mm
- Material:
- Tube: Aluminum alloy (hard anodized)
- End Caps: Aluminum alloy
- Seals: NBR (Nitrile rubber)
- Temperature Range: -20℃ to 80℃
- Weight: 3.8kg ±2% (with standard accessories)
- Dimensions:
- Total Length (Extended): 524mm
- Body Diameter: 40mm
- Mounting Base: 52mm × 52mm
- Rod End Thread: M16×1.5
- ISO Standard: 6432 (Round cylinder body)
- Protection Rating: IP54 (standard seals)
The SEJ40X250-50 features a unique dual-side adjustable stroke mechanism with graduated scale (1mm increments) for precision positioning. Its chromium-plated piston rod and self-lubricating bearings ensure smooth operation under 0.3-0.8m/s speed range. The built-in magnetic piston enables position sensing compatibility with standard inductive sensors.
- Variable height positioning in packaging machinery
- Press-fit operations with controlled insertion depth
- Semiconductor handling equipment requiring soft landing
- Automated assembly lines with adjustable clamping force
- Textile machinery with variable tension control
Installation Guidelines:
- Align adjustment screws perpendicular to cylinder axis during stroke setting
- Maintain 0.5-1mm lubrication film on rod surface during operation
- For vertical mounting: Use counterbalance valves when handling >5kg loads
- Maximum side load: 35N at full extension
Maintenance Cycle: Relubricate every 500km of cumulative travel or 6 months (whichever comes first). Use ISO VG32 hydraulic oil or equivalent pneumatic oil mist lubrication.
| Property | Property Value |
|---|---|
| sku | SEJ40X250-50 |
| Adjustable Stroke | <50mm> |
| 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 | Non-magnetic |
| Bore Diameter | <40mm> |
| Stroke | <250MM> → <250mm> |
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.