This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX20S, 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 SI160AX20S
The AirTAC Airtac SI160 Standard Cylinder SI160AX20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX20S
- 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 SI160AX20S
The AirTAC SI160AX20S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 20 mm stroke, and an SUS420J2 stainless steel rod. Delivering 10053 N push force at 0.5 MPa, it is replaced by the SAI160AX20S. This direct successor shares the exact ISO 15552 mounting interface, G3/4 port, and force ratings, fitting existing fixtures seamlessly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For load-holding, note the air cushion only decelerates; use a pilot check valve or SAIL lock variant. The -S magnet enables CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160AX20S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX20S |
| Bore size | Ø160 mm |
| Stroke | 20 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 SAI160AX20S 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 SAI160AX20S 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 SI160AX20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×20 | 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 SI160AX20S Is Used
Heavy Press Operations
Generates 14074 N at 0.7 MPa for high-force stamping, forming, and riveting tasks requiring a short 20 mm travel.
Pallet Clamping
Secures heavy loads securely with a 512 kg vertical lift capacity, utilizing the SUS420J2 stainless rod for durability.
Rugged Positioning
Short-stroke actuation for heavy industrial doors, gates, or diverter arms where a 160 mm bore provides decisive stopping power.
Replacing the Airtac SI160 Standard Cylinder SI160AX20S with the SAI160AX20S
To replace the SI160AX20S, order the SAI160AX20S. Confirm the ISO 15552 mounting interface, 160 mm bore, 20 mm stroke, G3/4 port, and mounting accessory. The -S magnet works with legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. The -A rod is SUS420J2 stainless steel. Sizing both ways: the 160 mm bore yields 10053 N push at 0.5 MPa (down from 125 mm's 6136 N, up from 200 mm's 15708 N). A plain cylinder drifts without live air; for load holding, use an external rod lock, pilot check valve, or BSAI clamp-lock variant. The 50 mm cushion decelerates the 30-500 mm/s speed range.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX20S
- ✓ 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 SI160AX20S FAQ
Yes, the SI160AX20S is discontinued. The direct replacement is the SAI160AX20S. It shares the same ISO 15552 mounting interface, 160 mm bore, 20 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
The bore is 160 mm with a G3/4 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. It features a 50 mm adjustable cushion and operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX20S replacement — usually within 7-8 hours.