Airtac SI125 Standard Cylinder SI125X40S
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 SI125X40S Standard Cylinder Specifications
- Model: SI125X40S
- Type: ISO 15552 compliant double-acting pneumatic cylinder
- Bore diameter: 125 mm
- Stroke: 40 mm (±1.5mm tolerance)
- Operating pressure: 0.15–1.0 MPa (21.7–145 PSI)
- Cushioning type: Adjustable pneumatic cushion at both ends
- Mounting style: Standard MF1 front flange with 4x M12x1.75 threaded holes
- Port size: G3/8 (ISO 228 standard)
- Operating temperature: -20℃ to 80℃ (NBR seals)
- Piston rod material: Chrome-plated 45# steel
- Cylinder tube: Anodized aluminum alloy
- Weight: 5.8 kg (12.8 lbs) with standard accessories
- Dimensions: 315mm(L) × 136mm(W) × 136mm(H)
- Max theoretical force: 1,227N at 0.63MPa (extending)
- Piston speed: 50–800 mm/s (lubricated condition)
- ISO standard: 6432 (mounting dimensions)
High-torque industrial cylinder designed for heavy-duty automation applications. Features wear-resistant integrated rod bearing and triple sealing system (rod seal, piston seal, and wiper). Optional magnetic piston version (SI125X40S-M9N) available for position sensing. Requires filtered air with 5-50μm particles and ISO VG32 hydraulic oil mist lubrication for optimal performance.
- Plastic injection molding machine ejectors
- Automotive assembly line clamping fixtures
- Steel mill conveyor gate actuators
- Paper processing equipment tension control
- Die-casting machine core pull mechanisms
Installation note:
Maintain 0.1mm maximum misalignment during mounting. Use flexible couplings
for stroke lengths over 500mm. Lubricate through air supply (oil mist type)
at 1 drop/minute/30L air flow. Avoid side loads exceeding 200N.
| Property | Property Value |
|---|---|
| sku | SI125X40S |
| 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 | <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.