Airtac SEJ Adjustable Cylinder SEJ50X250-20S
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 SEJ50X250-20S Adjustable Stroke Cylinder Technical Details
- Model: SEJ50X250-20S
- Type: Double-acting adjustable stroke cylinder
- Bore size: Ø50mm
- Stroke length: Adjustable 0-250mm
- Operating pressure: 0.05-1.0 MPa
- Cushioning: Adjustable elastic cushion (both ends)
- Mounting style: Basic type (MF1) with mounting holes
- Port size: G1/2 (NPT1/2 optional)
- Ambient temperature: -10℃ to 80℃
- Piston material: High-strength aluminum alloy (hard anodized)
- Rod material: Chrome-plated steel (Cr-Mo alloy)
- Seal type: NBR+PU combination seals
- Weight: 3.8kg (without accessories)
- Dimensions: 250mm (stroke length) × 158mm (width) × 60mm (height)
- Rod end: External thread M20×1.5
- Protection class: IP54 (standard wiper design)
Precision-engineered stroke-adjustable cylinder featuring dual mechanical stoppers with ±0.5mm repeatability. The hexagonal adjustment bolts enable fine-tuning without disassembly, while the anti-rotation guide groove ensures stable linear motion. Optimized for applications requiring variable stroke positions in harsh environments.
- Variable height positioning in automotive welding jigs
- Material handling systems with adjustable clamping force
- Printing press roller engagement mechanisms
- Plastic injection molding ejector stroke control
- Semiconductor wafer handling with Z-axis adjustment
Maintenance advisory:
Lubricate adjustment threads monthly with ISO VG32 hydraulic oil.
Maximum side load capacity: 150N at full extension.
Requires 5μm filtered air with automatic drain lubricator (oil mist 1-2 drops/m³).
| Property | Property Value |
|---|---|
| sku | SEJ50X250-20S |
| 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 | <50mm> |
| Stroke | <250MM> → <250mm> |
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.