This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X175TC, 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 SI200 Standard Cylinder SI200X175TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 175mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X175TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X175TC is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 175mm stroke. It delivers 15708N push and 15080N pull at 0.5MPa, peaking at 3204kgf. The direct replacement is the SAI200X175TC, retaining the exact G3/4 port, M36x2 thread, and TC trunnion mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure. As a non-magnet SKU, this cylinder cannot take a sensor.
| Model | Airtac SI200 Standard Cylinder SI200X175TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X175TC |
| Bore size | Ø200 mm |
| Stroke | 175 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 SAI200X175TC 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 SAI200X175TC 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. |
| ×175 | 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 presses requiring 21991N push at 0.7MPa to form thick metal components.
Secures heavy injection molds via the TC trunnion mount, handling 28274N at 0.9MPa.
To replace the SI200X175TC, order the SAI200X175TC. It drops into existing fixtures via the ISO 15552 TC trunnion interface, matching the 175mm stroke and G3/4 port. If downsizing, a 160mm bore yields 10053N push at 0.5MPa; if upsizing is impossible, this 200mm bore maxes at 3204kgf. This non-magnet version cannot accept CS1-B/DS1-B switches. Air cushions (50mm) only decelerate; use a pilot check valve or SAIL/BSAI lock variant to hold loads.
Replacement checklist
Yes, the SI200X175TC is discontinued. The direct replacement is the SAI200X175TC. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 200mm bore, 175mm stroke, G3/4 port, and TC trunnion mount.
It features a G3/4 port. The force ratings are: 15708N push and 15080N pull at 0.5MPa, 21991N push at 0.7MPa, 28274N push at 0.9MPa, and a theoretical max of 3204kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X175TC replacement — usually within 7-8 hours.