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 SI125BX135S Standard Cylinder Specifications
- Model: SI125BX135S
- Type: Double-acting pneumatic cylinder with magnetic piston
- Bore size: 125 mm
- Stroke: 135 mm
- Operating pressure: 0.15–1.0 MPa
- Cushioning: Adjustable air cushion (both ends)
- Piston rod material: Chrome-plated carbon steel (rod diameter: 35 mm)
- Tube material: Anodized aluminum alloy
- Seal material: High-grade NBR rubber
- Temperature range: -20℃ to 80℃
- Port size: G3/4 (ISO228 standard)
- Mounting style: Basic type (axial mounting holes) with optional accessories for foot/middle flange
- Magnetic sensor compatibility: Built-in sensor slots (compatible with CS-190 series)
- Weight: 16.8 kg (±3%)
- Dimensions: 338mm(L) × 125mm(W) × 152mm(H) (extended length with rod)
- Rod thread: M24×1.5 external thread (standard)
- Max theoretical force: 1,540N @ 0.6 MPa (extending)
High-torque industrial cylinder designed for heavy-duty automation applications. Features precision honed tubing for smooth operation and corrosion-resistant construction. The BX variant includes enhanced cushioning buffers for high-speed operations up to 1.2 m/s. Requires ISO 8573-1:2010 Class 3-4-3 compressed air quality.
- Automotive press line material handling
- Steel mill clamping/positioning systems
- Injection molding machine ejectors
- Paper processing equipment actuators
- Shipbuilding fixture controls
- 5,000 km travel distance (under standard load conditions)
- Recommended rebuild interval: 10 million cycles or 2 years
- Wear band material: Special polymer blend (replaceable)
| Property | Property Value |
|---|---|
| sku | SI125BX135S |
| 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 | SUS304 |
| Magnet | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | 135mm |
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.









