This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X150STC, 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 SI160X150STC
The AirTAC SI160 Standard Cylinder SI160X150STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 150mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X150STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke150 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X150STC
- 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 SI160X150STC
The AirTAC SI160X150STC is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 150 mm stroke, and a TC trunnion mount. Built with an extruded aluminum barrel, it delivers 10053 N of push force at 0.5 MPa and uses a G3/4 air port. Because this SI series is end-of-life, AirTAC mandates the SAI160X150STC as the direct replacement. It preserves the exact ISO 15552 mounting interface, bore, stroke, force, and port size for seamless fixture integration.
The SAI upgrade introduces an advanced piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended service life. The original SI unit includes a -S magnet for legacy CS1-B/DS1-B sensors, whereas the SAI replacement family accommodates current AirTAC switches. Furthermore, the SAI line expands functionality with SAIL, SAIF, and BSAI lock variants that the legacy SI lacked.
Airtac SI160 Standard Cylinder SI160X150STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X150STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X150STC |
| Bore size | Ø160 mm |
| Stroke | 150 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 SAI160X150STC 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 SAI160X150STC 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 SI160X150STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×150 | 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 SI160X150STC Is Used
Heavy Press Clamping
Ideal for securing large metal castings or heavy machinery components during machining, utilizing its 10053 N push force at 0.5 MPa to hold workpieces firmly against cutting forces.
Pallet Stopper Gates
Deployed in high-capacity conveyor systems to halt and index loaded pallets up to 512 kg, using the TC trunnion mount to absorb high lateral moments during deceleration.
Automated Lift Stations
Drives heavy vertical lifting platforms in assembly lines, where the 160 mm bore provides the necessary thrust to elevate tooling fixtures, provided an external check valve secures the load.
Replacing the Airtac SI160 Standard Cylinder SI160X150STC with the SAI160X150STC
To replace the discontinued SI160X150STC, order the SAI160X150STC. Verify that your existing setup matches the ISO 15552 TC trunnion mounting interface, the 160 mm bore, 150 mm stroke, and the G3/4 port. The SAI replacement maintains the exact M36x2 rod thread and 50 mm adjustable air cushions at both ends. Because this model includes the -S magnet, confirm your sensor compatibility; the original used legacy CS1-B/DS1-B switches, while the SAI family uses current AirTAC sensors. When sizing, note that stepping down to a 125 mm bore yields 6136 N push at 0.5 MPa, whereas this 160 mm bore provides 10053 N. If your application requires load holding during air loss, a standard cylinder cannot hold the load—the cushion only decelerates. You must use an external rod lock, a pilot-operated check valve, or transition to the SAIL or BSAI lock variant. For this 150 mm stroke, side-load and rod-bending forces are moderate, but always ensure proper guide alignment to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X150STC
- ✓ 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 SI160X150STC FAQ
Yes, the SI160X150STC is discontinued. The direct replacement is the SAI160X150STC. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 150 mm stroke, TC trunnion mount, and G3/4 port size, so it fits existing fixtures perfectly.
This 160 mm bore cylinder features a G3/4 air port and a 40 mm piston rod. 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X150STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X150STC replacement — usually within 7-8 hours.