Airtac SEJ Adjustable Cylinder SEJ125X50-30S
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 SEJ125X50-30S Adjustable Cylinder Technical Details
- Model: SEJ125X50-30S
- Type: Double-acting adjustable stroke cylinder
- Bore size: Ø125mm ±0.5mm tolerance
- Stroke: 50mm standard (30mm adjustable range)
- Adjustment mechanism: External mechanical stopper with locknut
- Operating pressure: 0.1–0.9 MPa (14.5–130.5 PSI)
- Port size: 1/2" NPT (G1/2 optional)
- Cushioning: Rubber buffer + adjustable damping
- Mounting style: AF (front flange) / LB (foot) / MF (rear flange)
- Rod material: Chrome-plated carbon steel (S45C)
- Tube material: Aluminum alloy (anodized finish)
- Seal type: Nitrile (NBR) + wear-resistant ring
- Temperature range: -20℃ to 80℃ (dry air required below 0℃)
- Weight: 6.8kg ±3% (excluding accessories)
- Dimensions:
- Extended length: 348mm
- Retracted length: 298mm
- Body diameter: Ø136mm
- Mounting hole spacing: 160×160mm (MF type)
High-precision industrial cylinder featuring micrometer-style stroke adjustment (±15mm from center position) for fine position control. The triple-seal design with dust-resistant scraper ensures reliable operation in particulate environments. Integrated shock absorption reduces end-impact noise by 40% compared to standard models.
- Variable height positioning in automated assembly lines
- Material clamping with pressure compensation
- Automotive welding fixture adjustments
- Packaging machine product height compensation
- Plastic injection mold core-pulling mechanisms
Installation protocol:
Apply Molykote 111 grease to adjustment threads during assembly.
Perform stroke calibration under 0.3MPa air pressure.
Re-tighten locknuts after 50 operation cycles.
| Property | Property Value |
|---|---|
| sku | SEJ125X50-30S |
| 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°C to 70°C Speed Range: 30 to 500 mm/s |
| Port Size | PT 1/2 |
| Magnet | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | <50mm> |
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.