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 SI125X350STC Standard Cylinder Specifications
- Model: SI125X350STC
- Type: ISO 15552 compliant double-acting cylinder
- Bore size: Ø125mm (±0.1mm tolerance)
- Stroke: 350mm (adjustable cushioning)
- Operating pressure: 0.15–0.95 MPa
- Temperature range: -20℃ to 80℃
- Cushioning type: Adjustable pneumatic cushion (both ends)
- Mounting style: Basic foot mounting (ISO 15552 accessory compatible)
- Port size: G3/8 (standard), optional NPT1/2
- Piston rod thread: M36×2 external thread
- Material: Aluminum alloy barrel, hard chrome-plated steel rod
- Seal material: NBR (nitrile rubber) standard, optional FKM
- Protection rating: IP65 (standard wipers)
- Weight: 12.8kg (dry, without accessories)
- Dimensions: 125mm(Ø) × 628mm(L) (Note: Total length = stroke + 278mm end caps)
High-force industrial cylinder designed for heavy-duty automation applications. Features corrosion-resistant construction with dual anti-rotation guide slots (per ISO 15552) and magnetic piston for position sensing compatibility. The buffering system reduces end-impact noise to ≤70dB(A) at 0.5MPa. Requires ISO VG32 hydraulic oil lubrication if used in high-cycle applications (>500,000 cycles/year).
- Press machine clamping mechanisms
- Plastic injection molding ejectors
- Steel coil handling systems
- Automotive welding fixture positioning
- Foundry equipment actuation
- Align piston rod within 0.2mm perpendicular tolerance
- Use flexible couplings for lateral force absorption
- Pre-lubricate through air port before first use
- Max side load: 350N at mid-stroke position
| Property | Property Value |
|---|---|
| sku | SI125X350STC |
| 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 | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | 350mm |
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.









