This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X310S, 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 SI160X310S
The AirTAC SI160 Standard Cylinder SI160X310S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 310mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X310S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke310 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X310S
- 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 SI160X310S
The AirTAC SI160X310S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 310 mm stroke, delivering 10053 N push force at 0.5 MPa. AirTAC replaced it with the SAI160X310S, a direct upgrade retaining the same G3/4 port, M36x2 rod thread, and 50 mm cushions. The SAI uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
This -S model includes a piston magnet for CS1-B/DS1-B switches, while the SAI replacement uses current AirTAC switches. Standard seals handle -20 to +70 C, with a Viton H option for up to 150 C. Remember, a plain cylinder drifts on air loss; the cushions only decelerate. For load holding, use an external rod lock or pilot check valve.
Airtac SI160 Standard Cylinder SI160X310S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X310S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X310S |
| Bore size | Ø160 mm |
| Stroke | 310 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 SAI160X310S 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 SAI160X310S 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 SI160X310S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×310 | 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 SI160X310S Is Used
Heavy Press Clamping
Generates up to 14074 N at 0.7 MPa to secure large steel plates during machining or welding operations.
Automated Assembly Lines
Drives large tooling heads over the 310 mm stroke, requiring external guide rails to prevent rod side-loading.
Replacing the Airtac SI160 Standard Cylinder SI160X310S with the SAI160X310S
To replace the discontinued SI160X310S, order the SAI160X310S. It drops into existing fixtures per the ISO 15552 mounting interface, matching the 160 mm bore, 310 mm stroke, G3/4 port, and mounting accessories. Confirm your thread type (PT, G, or NPT) and magnet requirement. At 0.5 MPa this bore yields 10053 N push and 9425 N pull; if undersizing, a 125 mm bore gives 6136 N push, while a 200 mm bore offers 15708 N. The 310 mm stroke requires external guides to prevent rod bending and side-load wear. For load holding on air loss, select the SAIL or BSAI lock variant, or use a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X310S
- ✓ 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 SI160X310S FAQ
Yes, the SI160X310S is discontinued. The direct replacement is the SAI160X310S. It shares the identical ISO 15552 mounting interface, 160 mm bore, 310 mm stroke, output force, G3/4 port, and accessories, fitting existing fixtures perfectly.
The 160 mm bore features a G3/4 air port and a 40 mm rod. At 0.5 MPa it provides 10053 N push and 9425 N pull. At 0.7 MPa push is 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X310S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X310S replacement — usually within 7-8 hours.