This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X155, 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 SI160X155
The AirTAC Airtac SI160 Standard Cylinder SI160X155 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 155mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X155, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X155
- 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 SI160X155
The AirTAC SI160X155 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 155 mm stroke, delivering a 10053 N push force at 0.5 MPa. Because this legacy unit lacks the -S magnet suffix, it cannot accept a position sensor. AirTAC replaced it with the SAI160X155, a direct upgrade retaining the exact G3/4 port, M36x2 rod thread, 50 mm cushions and ISO 15552 mounting interface.
The SAI successor features an upgraded piston seal utilizing two Y-shaped one-way elements for extended life and low start-up pressure. If high-temperature duty is needed, a Viton H seal option raises the operating ceiling to 150 C.
Airtac SI160 Standard Cylinder SI160X155 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X155 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X155 |
| Bore size | Ø160 mm |
| Stroke | 155 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 SAI160X155 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 SAI160X155 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 SI160X155
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×155 | 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 SI160X155 Is Used
Heavy Stamping Press
Drives large press dies requiring substantial push force, relying on the 50 mm adjustable air cushions to absorb impact at the 155 mm stroke end.
Large Clamp Actuator
Secures heavy fabricated components during machining, utilizing the robust 40 mm carbon steel rod to maintain rigidity under high clamping stress.
Replacing the Airtac SI160 Standard Cylinder SI160X155 with the SAI160X155
To replace the SI160X155, order the SAI160X155 and confirm the ISO 15552 mounting interface, 155 mm stroke, G3/4 port and mounting accessory match your existing fixture. Since this specific SKU has no magnet, it cannot support sensing; if you require position feedback, specify an SAI equivalent with the S suffix for current AirTAC switches. Sizing both ways: a 160 mm bore yields 10053 N push at 0.5 MPa, while the neighbouring 200 mm bore provides 15708 N. Remember that a standard cylinder drifts without live air, so for load holding you must add an external rod lock, a pilot check valve, or step up to the SAIL or BSAI lock variant. The cushion only decelerates the load near stroke end.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X155
- ✓ 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 SI160X155 FAQ
Yes, the AirTAC SI160X155 is discontinued. The direct replacement is the SAI160X155. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 155 mm stroke, G3/4 port and mounting interface, so it fits existing fixtures perfectly.
The 160 mm bore features a G3/4 port and delivers a push of 10053 N and pull of 9425 N at 0.5 MPa. At 0.7 MPa the push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X155
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X155 replacement — usually within 7-8 hours.