This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX155, 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 SI200AX155
The AirTAC Airtac SI200 Standard Cylinder SI200AX155 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 155mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX155, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX155
- 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 SI200AX155
The AirTAC SI200AX155 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 155 mm stroke. Delivering 15708 N push force at 0.5 MPa, it features an extruded aluminum barrel, a SUS420J2 stainless steel piston rod, and a G3/4 air port. The direct replacement is the current-production SAI200AX155, which matches the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note that this specific SKU lacks a magnet and cannot support legacy CS1-B/DS1-B sensors, and plain cylinders require external rod locks for load holding.
Airtac SI200 Standard Cylinder SI200AX155 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX155 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX155 |
| Bore size | Ø200 mm |
| Stroke | 155 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 SAI200AX155 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 SAI200AX155 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 SI200AX155
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×155 | 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 SI200AX155 Is Used
Heavy Stamp Pressing
Generates up to 21991 N at 0.7 MPa for driving large metal stamping dies and forming heavy-gauge components.
Large Mold Clamping
Applies robust holding power via the SUS420J2 stainless rod for securing heavy resin molds in harsh environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX155 with the SAI200AX155
To replace the SI200AX155, order the SAI200AX155. Verify the ISO 15552 mounting interface, the 155 mm stroke, the G3/4 port, and the SUS420J2 rod option. Because this SKU has no magnet (-S), it cannot accept position sensors. Sizing both ways: the 160 mm bore offers 10053 N push at 0.5 MPa, while the 200 mm bore provides 15708 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variants for held loads. Since the stroke is under 300 mm, rod-bending side loads are minimal, but ensure rigid guidance for the 801 kg vertical lift capacity.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX155
- ✓ 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 SI200AX155 FAQ
Yes, the AirTAC SI200AX155 is discontinued. The direct replacement is the SAI200AX155. It is a true ISO 15552 profile cylinder that matches the original 200 mm bore, 155 mm stroke, 15708 N force, and G3/4 port, dropping directly into existing fixtures.
It features a G3/4 air port. The force ratings are: 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX155
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX155 replacement — usually within 7-8 hours.