This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX950S, 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 SI200AX950S
The AirTAC Airtac SI200 Standard Cylinder SI200AX950S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 950mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX950S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke950 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX950S
- 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 SI200AX950S
The AirTAC SI200AX950S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 950mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. AirTAC replaced this legacy unit with the SAI200AX950S, a direct sharing the exact ISO 15552 mounting interface, M36x2 thread, and 50mm cushions.
The SAI upgrade features a new two Y-shaped one-way piston seal for low start-up pressure. This SI200AX950S uses a SUS420J2 stainless rod (-A) and a magnet (-S) for CS1-B/DS1-B sensors. For high heat, Viton H seals raise limits to 150 C.
Airtac SI200 Standard Cylinder SI200AX950S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX950S |
| Bore size | Ø200 mm |
| Stroke | 950 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 SAI200AX950S 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 SAI200AX950S 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 SI200AX950S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×950 | 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 SI200AX950S Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 21991 N thrust at 0.7 MPa, utilizing the 50mm adjustable cushions to halt massive inertia.
Pallet Lifting
Raises heavy palletized loads up to 801 kg in vertical material handling setups, relying on external guides to prevent side-load bending over 950mm.
Large Mold Handling
Shifts heavy industrial molds on production lines, where the SUS420J2 stainless rod provides necessary corrosion resistance in humid foundry environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX950S with the SAI200AX950S
To replace this SI200AX950S, order the SAI200AX950S and confirm the ISO 15552 mounting interface, 200mm bore, 950mm stroke, G3/4 port, and -S magnet for CS1-B/DS1-B switches. The SAI uses current AirTAC switches. Sizing down, a 160mm bore yields 10053 N push at 0.5 MPa; sizing up is impossible as 200mm is the largest. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding, or specify the SAIL/BSAI lock variant. At 950mm stroke, prevent rod bending by guiding the load externally. The SAI family also adds SAIF valve variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX950S
- ✓ 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 SI200AX950S FAQ
Yes, the SI200AX950S is discontinued. The direct replacement is the SAI200AX950S. It is dimensionally interchangeable per ISO 15552, keeping the same 200mm bore, 950mm stroke, force, G3/4 port, and mounting fixtures.
This double-acting cylinder operates at 30-500 mm/s. It generates 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 max of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX950S replacement — usually within 7-8 hours.