This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X500STC, 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 SI200 Standard Cylinder SI200X500STC
The AirTAC SI200 Standard Cylinder SI200X500STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 500mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X500STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke500 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X500STC
- 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 SI200 Standard Cylinder SI200X500STC
The AirTAC SI200X500STC is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 500mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X500STC. This direct upgrade keeps the exact ISO 15552 mounting interface, bore, stroke, output force, port size and TC trunnion mount, fitting existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI -S option included a piston magnet for CS1-B/DS1-B sensors, while the SAI family introduces lock variants like SAIL and BSAI absent in the legacy line.
Airtac SI200 Standard Cylinder SI200X500STC Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X500STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X500STC |
| Bore size | Ø200 mm |
| Stroke | 500 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 SAI200X500STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X500STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI200 Standard Cylinder SI200X500STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×500 | 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 SI200 Standard Cylinder SI200X500STC Is Used
Heavy Press Actuation
Drives large stamping or forming presses requiring up to 21991 N of push force at 0.7 MPa, utilizing the 500mm stroke to fully cycle heavy tooling.
Large Mold Transfer
Moves substantial injection molds or automotive components between stations, relying on the rigid TC trunnion mount to manage the 500mm stroke length.
Replacing the Airtac SI200 Standard Cylinder SI200X500STC with the SAI200X500STC
To replace the SI200X500STC, order the SAI200X500STC. Confirm the ISO 15552 TC trunnion mounting interface, 200mm bore, 500mm stroke, G3/4 port, and the -S magnet for current AirTAC switch compatibility. If downsizing, a 160mm bore yields 10053 N push at 0.5 MPa; if upsizing is possible, you are already at the maximum standard profile. Because this is a 500mm stroke, use an external guide to prevent rod bending and side-load damage. A plain SAI does not hold load without live air; the cushions only decelerate. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X500STC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI200 Standard Cylinder SI200X500STC FAQ
Yes, the SI200X500STC is discontinued. The direct replacement is the SAI200X500STC. It features the same ISO 15552 mounting interface, 200mm bore, 500mm stroke, output force, G3/4 port, and TC mount, dropping directly into existing fixtures.
The bore is 200mm with a G3/4 port. Force output is 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a theoretical maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X500STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X500STC replacement — usually within 7-8 hours.