Airtac SEJ Adjustable Cylinder SEJ40X70-20
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 SEJ40X70-20 Technical Details
- Model: SEJ40X70-20
- Type: Double-acting adjustable stroke cylinder
- Bore size: 40mm (ISO 6432 standard)
- Full stroke: 70mm ±0.5mm
- Adjustable stroke range: 20-70mm (externally adjustable)
- Operating pressure: 0.15-0.8 MPa
- Temperature range: -20℃ to 80℃
- Port size: M5x0.8 (G1/8 adapter optional)
- Cushioning type: Adjustable rubber buffer
- Mounting style: Basic type (no built-in mounts)
- Rod material: Chrome-plated carbon steel (S45C)
- Tube material: Anodized aluminum alloy
- Seal type: NBR seals with wear-resistant guide rings
- Weight: 680g ±2% (excluding accessories)
- Dimensions:
- Length (retracted): 135mm
- Length (extended): 205mm
- Width: 52mm (max body width)
- Height: 52mm (square body profile)
- ISO standard: Compliant with ISO 6432:2015
- Protection class: IP54 (standard seals)
Precision-adjustable pneumatic cylinder featuring a unique mechanical stroke adjustment mechanism with visual position indicators. The dual-scale markings (metric and imperial) on the adjustment screw enable quick stroke modifications without disassembly. Optimized for applications requiring variable positioning in confined spaces, with corrosion-resistant construction suitable for humid environments.
- Variable clamping force fixtures in CNC machining centers
- Adjustable stoppers in automotive assembly lines
- Position-controlled sorting gates in packaging systems
- Precision paper feeding mechanisms in printing equipment
- Height-adjustable work platforms in semiconductor handling
Installation tip:
Apply thread locker (medium strength) on adjustment screws during installation.
For optimal performance, maintain 0.5-1mm end play after stroke adjustment
and lubricate with ISO VG32 hydraulic oil (non-detergent).
Avoid side load exceeding 15N. When used in vertical orientation,
always install an air brake valve to prevent unexpected movement
during pressure loss.
| Property | Property Value |
|---|---|
| sku | SEJ40X70-20 |
| 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 | 70mm |
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.