This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX50S, 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 SI160AX50S
The AirTAC Airtac SI160 Standard Cylinder SI160AX50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX50S
- 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 SI160AX50S
The AirTAC SI160AX50S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore, 50mm stroke, G3/4 port, and a SUS420J2 stainless piston rod. Delivering 10053N push force at 0.5MPa, its direct replacement is the SAI160AX50S, matching the interface, bore, force, and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet works with legacy CS1-B/DS1-B sensors, while Viton H seals raise heat to 150C.
Airtac SI160 Standard Cylinder SI160AX50S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX50S |
| Bore size | Ø160 mm |
| Stroke | 50 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 SAI160AX50S 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 SAI160AX50S 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 SI160AX50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×50 | 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 SI160AX50S Is Used
Heavy Pressing
Applies the 14074N push force at 0.7MPa for seating large bearings and heavy structural components in automotive assembly lines.
Mold Clamping
Secures industrial injection molds using the SUS420J2 stainless rod, resisting moisture while providing a stable 10053N hold at 0.5MPa.
Short Stroke Press
Executes high-force 50mm stamping operations, leveraging the 50mm cushion stroke to safely decelerate the massive 160mm piston.
Replacing the Airtac SI160 Standard Cylinder SI160AX50S with the SAI160AX50S
To replace the SI160AX50S, order the SAI160AX50S and verify the ISO 15552 mounting, 50mm stroke, G3/4 port, and -S magnet. The -A rod is SUS420J2 stainless steel. Sizing both ways: a 200mm bore yields 15708N push at 0.5MPa, while a 125mm bore yields 6136N. Note that a plain cylinder drifts on air loss; cushions only decelerate. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX50S
- ✓ 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 SI160AX50S FAQ
Yes, the SI160AX50S is discontinued. The direct replacement is the SAI160AX50S, a true ISO 15552 profile cylinder that matches the 160mm bore, 50mm stroke, G3/4 port, and mounting fixtures.
It features a G3/4 port and delivers 10053N push / 9425N pull at 0.5MPa, 14074N push at 0.7MPa, and a maximum theoretical force of 2050 kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX50S replacement — usually within 7-8 hours.