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 SI125BX40S Standard Cylinder Specifications
- Model: SI125BX40S
- Type: Double-acting pneumatic cylinder (ISO 15552 compliant)
- Bore size: 125mm
- Stroke: 40mm
- Mounting style: Square flange (ISO 15552 MF1) with front/rear mounting holes
- Operating pressure: 0.15–0.8 MPa (21.7–116 PSI)
- Piston rod material: Hard chrome-plated steel (Cr-Mo alloy)
- Cushioning: Adjustable pneumatic cushioning (both ends)
- Port size: G1/2 (BSPP thread)
- Temperature range: -20℃ to 80℃ (-4°F to 176°F)
- Seal material: Nitrile butadiene rubber (NBR) with wear-resistant ring
- Max thrust: 9,817N @0.63MPa (calculated value)
- Weight: 11.3kg (24.9 lbs) ±3%
- Dimensions (L×W×H): 328mm × 160mm × 160mm (at mid-stroke position)
- Rod end thread: M20×1.5 male thread
- Protection rating: IP65 (standard wiper seal)
- Lubrication: Pre-lubricated (recommended relubrication every 500km stroke)
High-torque industrial cylinder optimized for heavy-duty linear motion applications. Features precision honed aluminum alloy tube with internal anti-corrosion treatment and magnetic field-enhanced piston for position sensing compatibility. The enhanced rod bearing design supports 30% higher side load capacity compared to standard ISO cylinders.
- Metal stamping press ejection systems
- Automotive welding fixture positioning
- Injection molding machine core-pulling mechanisms
- Paper converting equipment actuator
- Foundry equipment door clamping

- Align cylinder axis within 0.2mm perpendicularity tolerance
- Use flexible couplings for stroke-end force absorption
- Install air dryer when ambient humidity exceeds 70% RH
- Recommended maintenance: Inspect rod seals every 500,000 cycles
Property | Property Value |
---|---|
sku | SI125BX40S |
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 | <40mm> |
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.