This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX60S, 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.

The AirTAC Airtac SI200 Standard Cylinder SI200AX60S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 60mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX60S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200AX60S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 60mm stroke. Featuring a SUS420J2 stainless piston rod (-A) and a built-in magnet (-S) for legacy CS1-B/DS1-B switches, it delivers 15708 N push force at 0.5 MPa via its G3/4 port. AirTAC replaced this legacy unit with the SAI200AX60S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line, while operating parameters remain 0.15-1.0 MPa and -20 to +70 C (upgradable to 150 C with Viton H seals).
| Model | Airtac SI200 Standard Cylinder SI200AX60S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX60S |
| Bore size | Ø200 mm |
| Stroke | 60 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 SAI200AX60S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200AX60S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×60 | 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).
Drives large stamping dies requiring 15708 N push force at 0.5 MPa, utilizing the 60mm short stroke for rapid, high-impact actuation.
Secures heavy injection molds via the ISO 15552 mounting interface, leveraging the SUS420J2 stainless rod for corrosion resistance in humid environments.
To replace the discontinued SI200AX60S, order the SAI200AX60S. Verify your existing fixture matches the ISO 15552 mounting interface, 200mm bore, 60mm stroke, G3/4 port, and the specific mounting accessory (LB, FA, CA, TC, etc.). Retain the -S magnet for position sensing (the SAI uses current AirTAC switches, though legacy CS1-B/DS1-B sensors fit the SI) and the -A SUS420J2 stainless rod for corrosion resistance. For sizing, the 160mm neighbor bore yields 10053 N push at 0.5 MPa, whereas stepping up is unnecessary if 15708 N suffices. A plain cylinder drifts on air loss since the cushion only decelerates; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
Yes, the SI200AX60S is discontinued. The direct replacement is the SAI200AX60S. It shares the identical ISO 15552 mounting interface, 200mm bore, 60mm stroke, 15708 N force, and G3/4 port, fitting existing fixtures perfectly while upgrading the piston seal.
The 200mm bore features a G3/4 port and delivers 15708 N push and 15080 N pull at 0.5 MPa. At 0.7 MPa push force is 21991 N, and 28274 N at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa, with a speed range of 30-500 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX60S replacement — usually within 7-8 hours.