Airtac SEJ Adjustable Cylinder SEJ40X30-30S
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 SEJ40X30-30S Adjustable Cylinder Specifications
- Model: SEJ40X30-30S
- Type: Double-acting adjustable stroke cylinder
- Bore size: 40mm
- Stroke: 30mm (adjustable via external stopper)
- Operating pressure: 0.1–0.9 MPa
- Piston speed: 50–800 mm/s
- Cushioning: Adjustable air cushion (both ends)
- Port size: M5x0.8 (standard) / NPT1/8 optional
- Material: Aluminum alloy body, chrome-plated piston rod
- Seal material: NBR (nitrile rubber)
- Temperature range: -10℃ to 80℃
- Weight: 0.82 kg (bare cylinder)
- Dimensions: 200mm(L) × 40mm(W) × 40mm(H) (at full extension)
- Rod diameter: 12mm
- Mounting style: Basic type (no built-in mounts)
- ISO standard: 6432 (metric series)
Precision-engineered adjustable stroke cylinder featuring twin external mechanical stoppers for millimeter-level position control. The dual-cushion design minimizes end-impact noise (≤65dB) while maintaining positioning accuracy (±0.5mm repeatability). Anodized surface treatment provides corrosion resistance for humid environments.
- Packaging machine stopper mechanisms
- CNC fixture positioning systems
- Pharmaceutical dosing equipment
- Automated door stroke limitation
- 3D printer Z-axis end stops
Installation tip:
Lubricate piston rod with ISO VG32 hydraulic oil before initial use.
For vertical mounting, install lock nuts on adjustment screws to prevent
stroke drift from vibration. Maximum side load: 15N at full extension.
| Property | Property Value |
|---|---|
| sku | SEJ40X30-30S |
| Adjustable Stroke | 30mm |
| 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 | 30mm |
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.