Airtac SEJ Adjustable Cylinder SEJ125X300-100S
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 SEJ125X300-100S Adjustable Cylinder Technical Specifications
- Model: SEJ125X300-100S
- Type: Double-acting adjustable stroke cylinder
- Bore size: 125mm (±0.5mm tolerance)
- Stroke: 300mm (max adjustable range ±50mm)
- Adjustment mechanism: External mechanical stopper with locknut
- Operating pressure: 0.1–0.8 MPa
- Port size: G1/2 (NPT1/2 optional)
- Cushioning: Adjustable pneumatic cushion at both ends
- Mounting style: Standard MF1 flange mounting (ISO 15552 compatible)
- Material:
- Tube: Aluminum alloy AL6061-T6 with hard anodized surface
- Piston rod: Chrome-plated steel (S45C, HRC 40-50)
- Seals: NBR (standard) / PU (optional for high temperature)
- Temperature range: -20℃ to 80℃ (NBR seals)
- Weight: 7.8kg ±3% (without accessories)
- Dimensions:
- Total length: 568mm (at mid-stroke position)
- Width (flange to flange): 148mm
- Height (including rod end): 162mm
- Rod thread: M20×1.5 (external)
- ISO standard: 15552 (formerly ISO 6431)
Heavy-duty adjustable stroke cylinder featuring precision-machined aluminum construction and dual adjustable cushions. The external stroke adjustment mechanism allows ±50mm fine-tuning without disassembly, with graduated scale markings for repeat positioning. Integrated mounting flange and through-rod design enable stable installation in high-moment applications.
- Variable stroke press mechanisms in packaging lines
- Automotive assembly jigs requiring position fine-tuning
- Plastic injection molding ejection systems
- Material handling equipment with adjustable clamping positions
- Printing machinery paper feed adjustments
Installation recommendation:
For maximum stability, mount cylinder with C-shaped bracket (sold separately) when lateral forces exceed 200N.
Lubricate piston rod weekly with ISO VG32 hydraulic oil in high-cycle applications (>500 cycles/day).
Adjustment procedure:
Always depressurize system before rotating adjustment screws.
Turn stoppers in 1/4 increments (each mark = 5mm travel) and retighten locknuts to 28±3 N·m torque.
| Property | Property Value |
|---|---|
| sku | SEJ125X300-100S |
| Adjustable Stroke | 100mm |
| 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 | 300mm |
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.