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 SEJ125X300-50S Adjustable Cylinder Specifications
- Model: SEJ125X300-50S
- Bore size: 125mm
- Stroke: 300mm (adjustable range: ±3mm via built-in stopper)
- Operation pressure: 0.05-1.0 MPa
- Piston speed: 50-1000mm/s
- Cushioning: Adjustable air cushion (both ends)
- Mounting type: Basic type (MF1) with front/rear flange options
- Port size: G1/2 (BSPP thread)
- Rod material: Chrome-plated carbon steel (S45C)
- Tube material: Anodized aluminum alloy
- Seal material: NBR + Polyurethane
- Ambient temperature: -20℃ to 80℃
- Weight: 5.8kg (without accessories)
- Dimensions:
- Body length: 375mm (minimum retracted length)
- Stroke length: 300mm
- Overall width: 156mm (including mounting brackets)
- Height: 142mm (from base to rod end)
- ISO standard: 6432 (mounting dimensions)
Heavy-duty adjustable stroke cylinder with precision positioning capability, featuring dual anti-rotation guide rods and multi-position locking mechanism. The triple-sealed piston design ensures stable operation in high lateral load applications (max 10% of thrust force). Includes wear-resistant rod scraper and auto-drainage function for humid environments.
- Die casting machine ejection systems
- Automotive welding fixture positioning
- Palletizing robot end-effector adjustment
- Injection molding machine gate control
- Sheet metal bending press operations

Property | Property Value |
---|---|
sku | SEJ125X300-50S |
Adjustable Stroke | <50mm> |
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.