This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X270, 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 SI160X270
The AirTAC SI160 Standard Cylinder SI160X270 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 270mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X270, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X270
- 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 SI160X270
The AirTAC SI160X270 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 270 mm stroke. It delivers a thrust of 10053 N at 0.5 MPa, utilizing a G3/4 air port and a 50 mm adjustable air cushion at both ends. Because this legacy unit lacks the -S magnet suffix, it cannot accept a magnetic piston switch.
You should order the SAI160X270 as the direct replacement. It maintains the exact ISO 15552 mounting interface, bore, stroke, output force, and port size. The SAI upgrade features a redesigned piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life.
Airtac SI160 Standard Cylinder SI160X270 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X270 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X270 |
| Bore size | Ø160 mm |
| Stroke | 270 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 SAI160X270 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 SAI160X270 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 SI160X270
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×270 | 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 SI160X270 Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring substantial thrust, leveraging the 14074 N push force at 0.7 MPa to shape heavy gauge materials.
Automotive Assembly Jigs
Actuates robust clamping jigs on automotive production lines where the 50 mm adjustable air cushions absorb high kinetic energy at stroke ends.
Replacing the Airtac SI160 Standard Cylinder SI160X270 with the SAI160X270
To replace the SI160X270, specify the SAI160X270 keeping the identical 160 mm bore, 270 mm stroke, and ISO 15552 mounting interface. Confirm your port thread (PT, G, or NPT) which is G3/4 for this bore, along with your mounting accessory type. Since this original SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if position detection is needed, select an SAI model with the magnet option and compatible current AirTAC switches. For sizing alternatives, neighboring bores offer different force classes: a 125 mm bore provides 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. Remember that a standard cylinder drifts without live air—the cushion only decelerates at stroke end—so for load holding on air loss, consider the SAIL or BSAI lock variants, or an external pilot check valve. The 270 mm stroke is under the 300 mm side-load threshold, but always ensure proper guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X270
- ✓ 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 SI160X270 FAQ
Yes, the AirTAC SI160X270 is discontinued. The direct replacement is the SAI160X270. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 270 mm stroke, output force, G3/4 port, and mounting interface, so it fits existing fixtures perfectly.
This double-acting cylinder operates at 0.15-1.0 MPa with a G3/4 port. It generates a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa the push force is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa. It runs at 30-500 mm/s and uses a 50 mm adjustable cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X270
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