This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX55, 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 SI160AX55
The AirTAC Airtac SI160 Standard Cylinder SI160AX55 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 55mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX55, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke55 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX55
- 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 SI160AX55
The AirTAC SI160AX55 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 55 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI160AX55, featuring the same ISO 15552 mounting interface, M36x2 thread, and 2050 kgf max force.
The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure and long life. This SKU lacks a magnet (no sensor), uses a SUS420J2 rod, and the cushion only decelerates; use SAIL or BSAI for load holding.
Airtac SI160 Standard Cylinder SI160AX55 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX55 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX55 |
| Bore size | Ø160 mm |
| Stroke | 55 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 SAI160AX55 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 SAI160AX55 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 SI160AX55
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×55 | 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 SI160AX55 Is Used
Heavy Press Forming
Applies the 14074 N push force at 0.7 MPa to seat heavy bearings or form thick metal components in automated press lines.
Pallet Stopper
Acts as a robust 55 mm stroke end-stop for heavy-loaded pallets, utilizing the 160 mm bore's 9425 N pull force to retract.
Replacing the Airtac SI160 Standard Cylinder SI160AX55 with the SAI160AX55
To replace the SI160AX55, order the SAI160AX55 keeping the identical ISO 15552 interface, 160 mm bore, 55 mm stroke, G3/4 port, and SUS420J2 rod. Size both ways: a 125 mm bore yields 6136 N [email protected], while a 200 mm bore yields 15708 N. This no-magnet SKU cannot take a sensor. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX55
- ✓ 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 SI160AX55 FAQ
Yes, the SI160AX55 is discontinued. The direct replacement is the SAI160AX55, which shares the same ISO 15552 mounting interface, 160 mm bore, 55 mm stroke, G3/4 port, and force ratings.
At 0.5 MPa it pushes 10053 N and pulls 9425 N. At 0.7 MPa it pushes 14074 N, and at 0.9 MPa it pushes 18095 N. The theoretical max force is 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX55
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX55 replacement — usually within 7-8 hours.