Airtac SEJ Adjustable Cylinder SEJ125X75-20S
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 SEJ125X75-20S Adjustable Cylinder Technical Specifications
- Model: SEJ125X75-20S
- Type: Adjustable stroke double-acting cylinder
- Bore size: 125mm (4.92")
- Stroke: 75mm (2.95") adjustable
- Operating pressure: 0.05-1.0 MPa (7-145 PSI)
- Temperature range: -20℃ to 80℃ (-4℉ to 176℉)
- Cushioning: Adjustable rubber buffer + external stopper
- Mounting type: Basic (20S code: fixed front flange)
- Port size: G3/8 (standard), optional NPT1/2
- Piston rod material: Hard chrome-plated carbon steel
- Tube material: Anodized aluminum alloy
- Rod end type: Male thread M30×1.5
- Stroke adjustment: Mechanical locknut system (±5mm fine tuning)
- Repeat positioning accuracy: ±0.5mm
- Max piston speed: 500 mm/s
- Lubrication: Pre-lubricated (Optional oil-free operation)
- Weight: 18.7 kg (41.23 lbs)
- Dimensions:
- Total length: 325mm (12.8")
- Body diameter: 142mm (5.59")
- Mounting hole spacing: 150mm (5.91") vertical × 22mm (0.87") horizontal
- IP rating: IP54 (standard), IP67 optional
Heavy-duty adjustable stroke cylinder featuring precision-machined mechanical stops for repeatable positioning. The dual cushioning system combines internal rubber buffers with external screw-lock adjustment, allowing fine-tuning of end position damping. The hardened piston rod with multi-lip seal ensures leak-free operation in high-cycle applications.
- Press brake tool positioning systems
- Die casting machine ejectors
- Automotive welding fixture clamping
- Palletizing robot end-effector adjustment
- Injection molding machine core-pull mechanisms
Installation guidance:
Always align cylinder axis within 0.2mm perpendicular tolerance. For vertical mounting,
use rod-end support bracket (optional accessory ASF-125). Apply Molykote 111 paste
to adjustment threads during assembly. Maximum side load: 220N at full extension.
| Property | Property Value |
|---|---|
| sku | SEJ125X75-20S |
| 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°C to 70°C Speed Range: 30 to 500 mm/s |
| Port Size | PT 1/2 |
| Magnet | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | 75mm |
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.