Airtac SI40 Standard Cylinder SI40X250SFTC
2. Features wear-resistant Y-shaped axial sealing structure with cushioning function, extended service life, and low friction resistance;
3. Aluminum square tube profile with anodized tie rods for superior corrosion resistance;
4. Built-in adjustable pneumatic cushioning at both ends;
5. Multiple cylinder specifications and mounting accessories available for flexible configurations.
Category: Standard Cylinders | Brand: AirTAC | Series: SI40
AirTAC SI40X250SFTC Standard Cylinder Specifications
- Model: SI40X250SFTC
- Type: ISO 6432 compliant single-acting spring return cylinder
- Bore diameter: 40 mm
- Stroke: 250 mm (±0.5mm tolerance)
- Operating pressure: 0.05–1.0 MPa
- Operating temperature: -20℃ to 80℃
- Cushioning: Adjustable rubber buffer + fixed cushion
- Mounting style: Foot-mounted with through holes (ISO 15552)
- Port size: G1/8 (NPT1/8 optional)
- Piston rod thread: M16×1.5 external thread
- Cylinder tube material: Aluminum alloy (anodized)
- Seal material: NBR/PU (standard), optional FKM
- Weight: 2.65 kg (without accessories)
- Dimensions:
- Total length: 415 mm (extended)
- Body width: 50 mm
- Height (foot mount base): 25 mm
- Port center spacing: 32 mm
- Piston speed: 50–800 mm/s (lubricated)
- Protection rating: IP65 (rod seal)
- Cycle life: 5,000 km (piston travel distance)
A heavy-duty industrial cylinder featuring precision honed tubing and triple sealing system. The SFTC variant includes built-in magnet slots for position sensing (sensors sold separately). Optimized for high cycle rates with wear-resistant guide bands and chrome-plated piston rod (18μm thickness). Requires ISO VG32 hydraulic oil lubrication for maximum lifespan.
- Packaging machine ejector mechanisms
- CNC machine tool clamping systems
- Automated conveyor gate actuators
- Plastic injection molding ejectors
- Automotive assembly line positioning
Installation note:
Align cylinder axis within 0.2mm parallel tolerance. For vertical mounting,
use spring-side port as exhaust. Lubricate through air supply (oil-fog 1-2 drops/m³).
| Property | Property Value |
|---|---|
| sku | SI40X250SFTC |
| 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℃ to 80℃ Speed Range: 30-800 mm/s |
| Port Size | PT1/4 |
| Piston Rod Material | Medium Carbon Steel |
| Magnet | S-Magnetic |
| Bore Diameter | <40mm> |
| Stroke | <250MM> → <250mm> |
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.