This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X40S, 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 SI160X40S
The AirTAC SI160 Standard Cylinder SI160X40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X40S
- 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 SI160X40S
The AirTAC SI160X40S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 40 mm stroke. Delivering 10053 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI160X40S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, output force, port size and accessories.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. It also introduces SAIL, SAIF and BSAI lock variants the SI lacked. The SI160X40S includes a magnet for CS1-B/DS1-B sensors; note a plain cylinder drifts on air loss as cushions only decelerate.
Airtac SI160 Standard Cylinder SI160X40S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X40S |
| Bore size | Ø160 mm |
| Stroke | 40 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 SAI160X40S 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 SAI160X40S 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 SI160X40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×40 | 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 SI160X40S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming dies requiring high thrust over a short 40 mm travel distance.
Industrial Clamp Rig
Secures massive fabricated steel components during welding or machining using its 10053 N push force.
Platen Press Actuator
Applies steady downward clamping pressure on thick composite materials in a platen press setup.
Replacing the Airtac SI160 Standard Cylinder SI160X40S with the SAI160X40S
To replace the SI160X40S, order the SAI160X40S. Verify the ISO 15552 mounting interface, 40 mm stroke, G3/4 port (PT/G/NPT), M36x2 rod thread and the -S magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). Sizing both ways: this 160 mm bore yields 10053 N push at 0.5 MPa, whereas a 200 mm bore gives 15708 N, and a 125 mm bore gives 6136 N. For load holding on air loss, cushions only decelerate; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 50 mm cushion ensures smooth stops.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X40S
- ✓ 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 SI160X40S FAQ
Yes, the SI160X40S is discontinued. The direct replacement is the AirTAC SAI160X40S. It shares the same ISO 15552 mounting interface, 160 mm bore, 40 mm stroke, output force, G3/4 port and mounting accessories, fitting existing fixtures perfectly.
The bore is 160 mm with a G3/4 air port. 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X40S replacement — usually within 7-8 hours.