This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX45S, 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 SI160AX45S
The AirTAC Airtac SI160 Standard Cylinder SI160AX45S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 45mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX45S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke45 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX45S
- 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 SI160AX45S
The AirTAC SI160AX45S is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 45mm stroke, delivering 10053N push force at 0.5MPa. It features a G3/4 port, M36x2 rod thread, and a SUS420J2 stainless steel piston rod. The direct replacement is the SAI160AX45S, sharing identical ISO 15552 mounting dimensions, force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI160 Standard Cylinder SI160AX45S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX45S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX45S |
| Bore size | Ø160 mm |
| Stroke | 45 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 SAI160AX45S 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 SAI160AX45S 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 SI160AX45S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×45 | 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 SI160AX45S Is Used
Heavy Press Clamping
Generates 14074N of push force at 0.7MPa to secure large metal stampings during heavy-duty press operations.
Injection Molding Eject
Ejects dense molded parts using the corrosion-resistant SUS420J2 stainless rod in humid manufacturing environments.
Replacing the Airtac SI160 Standard Cylinder SI160AX45S with the SAI160AX45S
To replace the SI160AX45S, order the SAI160AX45S ensuring the ISO 15552 mounting interface, 45mm stroke, G3/4 port, and -S magnet match your fixture. The -A rod specifies SUS420J2 stainless steel, and the -S magnet works with legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). If downsizing, a 125mm bore yields 6136N push at 0.5MPa; if upsizing, a 200mm bore provides 15708N. Note that a plain cylinder drifts without live air, as the cushion only decelerates—use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. The Viton H seal option raises operating temperature to 150C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX45S
- ✓ 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 SI160AX45S FAQ
Yes, the AirTAC SI160AX45S is discontinued. The direct replacement is the SAI160AX45S. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 45mm stroke, 10053N force, G3/4 port, and mounting accessories.
This double-acting cylinder features a G3/4 air port and delivers a push force of 10053N and pull of 9425N at 0.5MPa. At 0.7MPa push is 14074N, and 18095N at 0.9MPa. The theoretical maximum force is 2050kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX45S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX45S replacement — usually within 7-8 hours.