2. Piston features bidirectional Y-seal structure with cushioning function, offering extended service life and low friction resistance;
3. Aluminum barrel with cruciform reinforcement and black-anodized piston rod for enhanced corrosion resistance;
4. Precision machined cylinder surface ensures smooth operation;
5. Multiple cylinder specifications and mounting accessories available for flexible configurations.
Category: Standard Cylinders | Brand: AIRTAC | Series: SI125
AirTAC SI125X400 Standard Cylinder Specifications
- Model: SI125X400
- Type: ISO 15552 compliant double-acting pneumatic cylinder
- Bore size: Ø125 mm
- Stroke: 400 mm (adjustable cushioning)
- Operating pressure: 0.05–1.0 MPa
- Medium: Clean compressed air (ISO 8573-1:2010 Class 3.4.3)
- Cushioning type: Adjustable pneumatic cushion (both ends)
- Mounting: Multiple options (FB, MP4, etc.) with ISO 15552 mounting dimensions
- Port size: G1/2 (BSPP thread)
- Material: Aluminum alloy barrel, chrome-plated steel piston rod
- Seal material: NBR (standard), optional FKM
- Temperature range: -20℃ to 80℃ (NBR seals)
- Piston rod thread: M33x2 (external)
- Weight: 12.8 kg (dry, without accessories)
- Dimensions: 700mm(L) × 160mm(W) × 160mm(H) (fully retracted)
- Max theoretical force: 1,540N @ 0.8MPa (extending)
- Piston speed: 50–800 mm/s
- Protection rating: IP65 (rod seal)
High-capacity industrial cylinder designed for heavy-duty automation applications. Features precision-machined aluminum construction with hard chrome-plated piston rod for enhanced wear resistance. The dual adjustable cushioning system minimizes end-impact noise and vibration. Compatible with all ISO 15552 mounting accessories and position sensors.
- Automotive assembly line clamping mechanisms
- Metal stamping press ejection systems
- Packaging machinery compression units
- Foundry equipment material handling
- Plastic injection molding machine core pulls
| Property | Property Value |
|---|---|
| sku | SI125X400 |
| 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 80°C Speed Range: 30-500 mm/s |
| Port Size | PT 1/2 |
| Piston Rod Material | Medium Carbon Steel |
| Magnet | Non-magnetic |
| Bore Diameter | 125mm |
| Stroke | <400mm> |
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.









