Airtac SEJ Adjustable Cylinder SEJ40X25-20
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 SEJ Adjustable Cylinder SEJ40X25-20 Technical Specifications
- Model: SEJ40X25-20
- Type: Double-acting adjustable stroke cylinder
- Bore size: 40mm
- Stroke: 25mm ±1mm (adjustable)
- Operating pressure: 0.05–0.9 MPa
- Operating medium: Clean air (lubricated or non-lubricated)
- Cushioning type: Adjustable buffer at both ends
- Port size: Rc1/4 (G1/4 optional)
- Temperature range: -20℃ to 80℃
- Body material: Aluminum alloy (anodized)
- Rod material: Stainless steel (SUS304)
- Seal material: NBR rubber (PU optional)
- Weight: 1.2kg ±50g
- Dimensions: 180mm(L) × 40mm(W) × 40mm(H)
- Mounting type: Basic type (accessory brackets available)
- ISO standard: 6432 (interchangeable with ISO cylinders)
Precision-adjustable pneumatic cylinder featuring micrometer-style stroke adjustment with locking mechanism. The SEJ series combines 360° rotatable auto-stop nuts with visible stroke scales (0.5mm graduation) for fine position control. Enhanced durability with chrome-plated piston rod and integrated shock absorbers.
- Precision clamping fixtures in CNC machining centers
- Variable-height positioning in automated assembly lines
- Gate control in plastic injection molding machines
- Printing press roller adjustment systems
- Packaging machine product height compensation
Operation guidance:
Rotate the adjustment screw clockwise to reduce stroke (max 3 full turns).
Apply Molykote EM-30L grease annually for high-cycle applications.
Avoid side-load forces exceeding 15N·m.
| Property | Property Value |
|---|---|
| sku | SEJ40X25-20 |
| 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 | Non-magnetic |
| Bore Diameter | <40mm> |
| Stroke | <25 mm> |
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.