This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX400, 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 SI160AX400
The AirTAC SI160 Standard Cylinder SI160AX400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX400
- 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 SI160AX400
The AirTAC SI160AX400 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 400 mm stroke. It delivers 10053 N push force at 0.5 MPa and uses a G3/4 air port. AirTAC replaced this legacy unit with the SAI160AX400, a direct replacement sharing the exact ISO 15552 mounting interface, bore, output force, and port size for seamless fixture integration.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU includes a SUS420J2 stainless steel rod (the -A option) but lacks a magnet, so it cannot accept position switches.
Airtac SI160 Standard Cylinder SI160AX400 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX400 |
| Bore size | Ø160 mm |
| Stroke | 400 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 SAI160AX400 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 SAI160AX400 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 SI160AX400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 SI160AX400 Is Used
Heavy Pressing
Drives large stamping and forming presses requiring 10053 N of push force at 0.5 MPa.
Clamp Fixtures
Secures large machined components during milling using the robust 160 mm ISO 15552 body.
Replacing the Airtac SI160 Standard Cylinder SI160AX400 with the SAI160AX400
To replace the SI160AX400, order the SAI160AX400. Verify your ISO 15552 mounting accessory (LB foot, FA flange, or TC trunnion) and confirm the G3/4 port thread (PT, G, or NPT). Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if position detection is needed, select a magnet-equipped SAI model. When sizing, note the 160 mm bore yields 10053 N push at 0.5 MPa, while the neighbouring 125 mm bore offers 6136 N. A standard cylinder does not hold load on air loss; for locking needs, consider the SAIL or BSAI variants, or use an external pilot check valve. Finally, at 400 mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX400
- ✓ 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 SI160AX400 FAQ
Yes, the SI160AX400 is discontinued. The direct replacement is the SAI160AX400. It shares the identical ISO 15552 mounting interface, 160 mm bore, 400 mm stroke, force, and G3/4 port, fitting directly into existing fixtures.
This double-acting cylinder has a G3/4 air port. It delivers 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 maximum force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX400
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX400 replacement — usually within 7-8 hours.