This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X270S, 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 SI200X270S
The AirTAC SI200 Standard Cylinder SI200X270S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 270mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X270S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X270S
- 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 SI200X270S
The AirTAC SI200X270S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 270mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X270S, a direct upgrade retaining the exact ISO 15552 mounting interface, M36x2 thread, and 3204 kgf max force.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. This -S model includes a magnet for CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200X270S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X270S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X270S |
| Bore size | Ø200 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 SAI200X270S 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 SAI200X270S 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 SI200X270S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | 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 SI200 Standard Cylinder SI200X270S Is Used
Heavy Press Strokes
Drives 270mm pressing actions in automotive assembly, utilizing the 21991 N push force at 0.7 MPa to seat large bearings.
Mold Handling
Shifts large injection molds along the 270mm stroke, relying on the rigid ISO 15552 mounting interface to handle high mass.
Replacing the Airtac SI200 Standard Cylinder SI200X270S with the SAI200X270S
To replace the SI200X270S, order the SAI200X270S. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/4 port, and the -S magnet for current AirTAC switches. If you need more force than the 15708 N at 0.5 MPa, step up pressure carefully or use a larger bore; if less force is needed, consider a 160mm bore yielding 10053 N. For strokes over 300mm, guide the load to prevent rod bending and side-load wear. A plain cylinder does not hold load without live air; the 50mm cushion only decelerates. For load holding on air loss, specify the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X270S
- ✓ 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 SI200X270S FAQ
Yes, the SI200X270S is discontinued. The direct replacement is the SAI200X270S. It shares the identical ISO 15552 mounting interface, 200mm bore, 270mm stroke, G3/4 port, and output force, fitting existing fixtures perfectly.
The 200mm bore uses a G3/4 port. At 0.5 MPa it provides 15708 N push and 15080 N pull force. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X270S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X270S replacement — usually within 7-8 hours.