This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX85S, 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 SI200AX85S
The AirTAC Airtac SI200 Standard Cylinder SI200AX85S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 85mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX85S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX85S
- 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 SI200AX85S
The AirTAC SI200AX85S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 85mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200AX85S. This direct upgrade keeps the exact ISO 15552 mounting interface, stroke, and force, fitting existing fixtures directly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SI200AX85S includes an -S magnet for legacy CS1-B/DS1-B sensors and an -A SUS420J2 stainless rod. Note that a plain cylinder drifts on air loss; use an external rod lock or SAIL/BSAI variant to hold loads.
Airtac SI200 Standard Cylinder SI200AX85S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX85S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX85S |
| Bore size | Ø200 mm |
| Stroke | 85 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 SAI200AX85S 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 SAI200AX85S 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 SI200AX85S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SI200AX85S Is Used
Heavy Stamp Pressing
Drives large metal forming or stamping dies requiring 15708 N of thrust at 0.5 MPa within an 85mm stroke.
Industrial Clamp Systems
Secures massive fabricated steel components during welding or machining using the 200mm bore profile barrel.
Replacing the Airtac SI200 Standard Cylinder SI200AX85S with the SAI200AX85S
To replace the SI200AX85S, order the SAI200AX85S. Confirm the ISO 15552 mounting interface, 200mm bore, 85mm stroke, G3/4 port, and mounting accessory match your fixture. The -S magnet enables current AirTAC switches, and the -A rod specifies SUS420J2 stainless steel. For higher force, a 160mm bore yields 10053 N push at 0.5 MPa. Because it is double-acting, the cushion only decelerates; it does not hold load on air loss. For that, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX85S
- ✓ 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 SI200AX85S FAQ
Yes, the AirTAC SI200AX85S is discontinued. The direct replacement is the SAI200AX85S. It shares the same ISO 15552 mounting interface, 200mm bore, 85mm stroke, output force, G3/4 port, and mounting accessories, fitting directly into existing setups.
The 200mm bore uses a G3/4 port. It generates a push force of 15708 N and a pull force of 15080 N at 0.5 MPa. 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 SAI200AX85S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX85S replacement — usually within 7-8 hours.