Airtac SI125 Standard Cylinder SI125BX275S
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 SI125BX275S Standard Cylinder Technical Specifications
- Model: SI125BX275S
- Type: ISO 15552 compliant double-acting pneumatic cylinder
- Bore size: 125mm
- Stroke: 275mm
- Operating pressure: 0.1–0.9 MPa (15–130 PSI)
- Cushioning: Adjustable pneumatic cushion (both ends)
- Port size: G1/2 (ISO 228/1 standard)
- Piston rod material: Hard chrome-plated 45# steel
- Tube material: Anodized aluminum alloy
- Seal material: NBR (nitrile rubber)
- Temperature range: -20℃ to 80℃ (-4°F to 176°F)
- Mounting type: Basic front flange (ISO 15552-MF1)
- Weight: 12.5 kg (27.56 lbs) ±3%
- Dimensions (L×W×H): 550mm × 160mm × 160mm (21.65" × 6.3" × 6.3")
- Rod end thread: M30×1.5-6g
- Max theoretical force (@0.63MPa): 7,734N (extend), 6,636N (retract)
- Accessories: Built-in magnet for magnetic sensor (SI-M type compatible)
High-torque industrial cylinder designed for heavy-duty automation applications. Features triple-lip rod seal for extended service life and chrome-plated piston rod with hardened surface (HRC 35-40). Integrated cushioning adjustment screws allow precise deceleration control. Optional auto-switch mounting slots on three sides for flexible sensor placement.
- Metal stamping press ejection systems
- Automotive assembly line clamping devices
- Plastic injection molding machine core pulls
- Warehouse automated stacking robots
- Foundry equipment door actuators
Installation guidelines:
Align cylinder axis within 0.2mm perpendicularity tolerance. Use flexible couplings
when lateral forces exceed 10% of max thrust. Lubricate with ISO VG32 hydraulic oil
if not using pre-lubricated air supply. Cushion needle valve requires 1/4 turn adjustment
increments for optimal performance.
| Property | Property Value |
|---|---|
| sku | SI125BX275S |
| 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 | 275mm |
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.