This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X250, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI160 Standard Cylinder SI160X250
The AirTAC SI160 Standard Cylinder SI160X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X250
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI160 Standard Cylinder SI160X250
The AirTAC SI160X250 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 250 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this EOL unit with the SAI160X250, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This base SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. For high heat, choose the Viton H seal option (0-150 C).
Airtac SI160 Standard Cylinder SI160X250 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X250 |
| Bore size | Ø160 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160X250 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X250 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI160 Standard Cylinder SI160X250 Is Used
Heavy Press Operations
Drives large forming and stamping presses requiring up to 14074 N of thrust at 0.7 MPa, utilizing the 50 mm adjustable cushion to halt heavy masses smoothly.
Industrial Clamp Systems
Secures large fabricated components during machining or welding, providing 9425 N pull force at 0.5 MPa while enduring harsh shop environments.
Replacing the Airtac SI160 Standard Cylinder SI160X250 with the SAI160X250
To replace the SI160X250, order the SAI160X250. Verify the ISO 15552 mounting interface, 250 mm stroke, G3/4 port (PT/G/NPT) and your mounting accessory. Because this SKU lacks the -S magnet, it cannot support position sensing; order a magnet-equipped SAI if needed. Sizing both ways: a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push @0.5 MPa. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. With a 250 mm stroke, side-load and rod-bending risks are low, but ensure guide alignment to protect the 40 mm rod.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X250
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X250 FAQ
Yes, the AirTAC SI160X250 is discontinued. The direct replacement is the SAI160X250. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 250 mm stroke, output force, G3/4 port and mounting accessories.
This double-acting cylinder operates at 0.15-1.0 MPa (proof 1.5 MPa) with a speed of 30-500 mm/s. Force output is 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. It uses a G3/4 port and a M36x2 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X250
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X250 replacement — usually within 7-8 hours.