Airtac SEJ Adjustable Cylinder SEJ40X70-20S
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 SEJ Series Adjustable Cylinder SEJ40X70-20S Technical Details
- Model: SEJ40X70-20S
- Type: Double-acting adjustable stroke cylinder
- Bore size: 40mm (ISO 6432 standard)
- Stroke: 70mm (nominal) with ±10mm adjustable range
- Adjustment mechanism: External stroke adjustment screws (2-point locking)
- Operating pressure: 0.05–0.8 MPa
- Cushioning type: Adjustable pneumatic cushioning (both ends)
- Mounting style: Basic type (foot-mounted), ISO 15552 mounting compatibility
- Rod material: Hard chrome-plated carbon steel (DIN 2391)
- Seal material: Nitrile rubber (NBR) standard, optional FKM
- Weight: 1.85kg ±3% (without accessories)
- Dimensions:
- Total length: 200mm (at mid-stroke)
- Body width: 90mm (mounting face to cushion adjuster)
- Height: 40mm (excluding mounting hardware)
- Temperature range: -20℃ to +80℃ (dry air required below 0℃)
- Lubrication: Pre-lubricated (oil-free operation possible)
- Port size: M5x0.8 (standard), G1/8 optional
Precision-engineered adjustable stroke cylinder featuring dual mechanical stops for mid-position locking. The SEJ40X70-20S combines position repeatability (±0.5mm) with impact absorption through tunable cushioning, making it ideal for applications requiring variable stroke control without disassembly. Anodized aluminum construction with corrosion-resistant rod treatment ensures durability in humid environments.
- Variable height positioning in robotic pick-and-place systems
- Printing machinery with adjustable compression settings
- Assembly line fixtures requiring multiple stop positions
- Packaging equipment for product size adjustments
- Material handling systems with variable clamping force
Installation tip:
Always perform stroke adjustment with system depressurized. Use locknuts on adjustment screws after positioning. For vertical installations, add 10-15% extra cushioning at lower end to compensate for gravitational acceleration.
| Property | Property Value |
|---|---|
| sku | SEJ40X70-20S |
| 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 | 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.