This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X25S, 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 SI160X25S
The AirTAC SI160 Standard Cylinder SI160X25S 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 SAI160X25S, 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 → SAI160X25S
- 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 SI160X25S
The AirTAC SI160X25S 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 through a G3/4 port, it is replaced by the SAI160X25S. This direct successor shares the exact ISO 15552 mounting interface, M36x2 thread, and 50 mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family adds SAIL and BSAI lock variants the SI lacked. This -S SKU has a magnet for CS1-B/DS1-B switches.
Airtac SI160 Standard Cylinder SI160X25S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X25S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X25S |
| 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 SAI160X25S 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 SAI160X25S 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 SI160X25S
| 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 SI160X25S Is Used
Heavy Stamping
Drives large presses and stamping dies requiring high force over a short 25 mm travel distance.
Industrial Clamping
Provides robust 10053 N clamping force for securing heavy fabrications during machining or welding.
Press Fit Assembly
Applies steady vertical pressure for seating large bearings and heavy mechanical components.
Replacing the Airtac SI160 Standard Cylinder SI160X25S with the SAI160X25S
To replace the SI160X25S, order the SAI160X25S. Confirm the ISO 15552 mounting interface, G3/4 port, and your mounting accessory (LB, FA, CA, TC). The -S magnet enables CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. A plain cylinder drifts on air loss—cushions only decelerate—so use SAIL or BSAI for holding. Sizing both ways: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B); Viton H seals allow 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X25S
- ✓ 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 SI160X25S FAQ
Yes, the SI160X25S is discontinued. The direct replacement is the SAI160X25S, which shares the same ISO 15552 mounting interface, 160 mm bore, 25 mm stroke, force, G3/4 port, and accessories.
It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, with a 50 mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X25S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X25S replacement — usually within 7-8 hours.