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 SI125BX650 Standard Cylinder Specifications
- Model: SI125BX650
- Type: ISO 15552 compliant double-acting pneumatic cylinder
- Bore size: 125mm
- Stroke: 650mm
- Operating pressure: 0.05–1.0 MPa
- Cushioning type: Adjustable hydraulic buffer (both ends)
- Port size: G3/8 (ISO 228-1 standard)
- Piston rod material: Hard chrome-plated steel (Cr-Mo alloy)
- Tube material: Anodized aluminum alloy
- Seal material: NBR (nitrile rubber) with wear-resistant ring
- Temperature range: -20℃ to 80℃ (with grease) / -10℃ to 70℃ (dry)
- Mounting style: Basic type (multiple options available: FB, LB, etc.)
- Weight: 18.5kg ±2% (including mounting accessories)
- Dimensions: 1070mm(L) × 165mm(W) × 165mm(H) (fully extended)
- Rod end thread: M20×1.5 (male thread both ends)
- Max theoretical force: 12,272N at 0.8MPa (extending)
- Max speed: 500mm/s (with cushioning adjustment)
- Protection rating: IP65 (standard wiper seal)
High-performance industrial cylinder designed for heavy-load applications requiring precise linear motion. Features dual adjustable hydraulic shock absorbers for smooth deceleration and reduced impact noise. The hard-anodized barrel surface provides exceptional corrosion resistance in humid environments. Requires ISO 8573-1:2010 Class 3-4-3 compressed air quality.
- Automotive assembly line clamping systems
- Injection molding machine ejectors
- Steel plate stacking/palletizing systems
- Paper mill roller positioning mechanisms
- Foundry equipment door actuators
| Property | Property Value |
|---|---|
| sku | SI125BX650 |
| 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 | Non-magnetic |
| Bore Diameter | 125mm |
| Stroke | 650mm |
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.









