This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX20, 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 SI200AX20
The AirTAC Airtac SI200 Standard Cylinder SI200AX20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX20
- 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 SI200AX20
The AirTAC SI200AX20 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 20 mm stroke. It delivers 15708 N of push force at 0.5 MPa through a G3/4 port. Because this legacy unit is end-of-life, you should order the SAI200AX20 direct replacement, which matches the exact ISO 15552 mounting interface, stroke, force and port size.
The SAI upgrade features a revised piston seal using two Y-shaped one-way elements for low start-up pressure and long life. The -A code denotes a SUS420J2 stainless steel rod for corrosion resistance. Without a -S magnet this SKU cannot take a sensor.
Airtac SI200 Standard Cylinder SI200AX20 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX20 |
| Bore size | Ø200 mm |
| Stroke | 20 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 SAI200AX20 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 SAI200AX20 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 SI200AX20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×20 | 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 SI200AX20 Is Used
Heavy Press Operations
Generates up to 3204 kgf at 1.0 MPa for high-tonnage stamping, forming, and riveting tasks in metal fabrication lines.
Robotic Welding Clamps
Delivers the robust holding force required for large-scale automotive robotic welding fixtures and heavy-duty clamping.
Replacing the Airtac SI200 Standard Cylinder SI200AX20 with the SAI200AX20
To replace the SI200AX20, order the SAI200AX20. Verify your ISO 15552 mounting fixtures, the G3/4 air port, and the M36x2 rod thread. Because this SKU lacks a -S magnet, it cannot accept CS1-B/DS1-B switches; add the magnet if you need position sensing. Sizing down, a 160 mm bore offers 10053 N [email protected]; sizing up is not available. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX20
- ✓ 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 SI200AX20 FAQ
Yes, the AirTAC SI200AX20 is discontinued. The direct replacement is the SAI200AX20. It is a true ISO 15552 profile cylinder that matches the original 200 mm bore, 20 mm stroke, 15708 N force, G3/4 port, and mounting interface, fitting directly into your existing fixtures.
This double-acting cylinder operates at 30-500 mm/s. At 0.5 MPa it pushes 15708 N and pulls 15080 N. 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. It uses a G3/4 port and a 50 mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX20
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX20 replacement — usually within 7-8 hours.