This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX25, 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 SI160AX25
The AirTAC Airtac SI160 Standard Cylinder SI160AX25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 25mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX25
- 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 SI160AX25
The AirTAC SI160AX25 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 25 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread and 50 mm cushions. The direct replacement is the SAI160AX25, which maintains the exact ISO 15552 mounting interface, bore, stroke, force and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SI160AX25 variant uses a SUS420J2 stainless steel rod (option A) for corrosion resistance, but lacks a magnet, meaning it cannot accept position switches.
Airtac SI160 Standard Cylinder SI160AX25 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX25 |
| Bore size | Ø160 mm |
| Stroke | 25 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 SAI160AX25 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 SAI160AX25 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 SI160AX25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×25 | 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 SI160AX25 Is Used
Heavy Stamping
Generates 14074 N at 0.7 MPa to drive large presses and form thick metal components securely.
Injection Molding
Provides robust clamping force on large molds, utilizing the 50 mm adjustable cushions to absorb impact.
Pallet Handling
Shifts heavy loaded pallets with a 512 kg vertical lift capacity, relying on the durable SUS420J2 rod.
Replacing the Airtac SI160 Standard Cylinder SI160AX25 with the SAI160AX25
To replace the SI160AX25, order the SAI160AX25 direct equivalent, confirming the ISO 15552 mounting interface, 160 mm bore, 25 mm stroke, G3/4 port and SUS420J2 rod. Since this specific SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; choose an SAI model with a magnet if sensing is required. For heavy loads, a 125 mm bore yields 6136 N at 0.5 MPa, while a 200 mm bore provides 15708 N. Note that a plain cylinder drifts without live air—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX25
- ✓ 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 SI160AX25 FAQ
Yes, the SI160AX25 is discontinued. The direct replacement is the SAI160AX25, offering the same ISO 15552 mounting interface, 160 mm bore, 25 mm stroke, output force, G3/4 port and accessories.
It features a G3/4 port and delivers 10053 N push / 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a maximum theoretical force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX25
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX25 replacement — usually within 7-8 hours.