This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX75, 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 SI200AX75
The AirTAC Airtac SI200 Standard Cylinder SI200AX75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 75mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke75 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX75
- 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 SI200AX75
The AirTAC SI200AX75 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 75 mm stroke. Built for heavy-duty thrust, it delivers 15708 N push and 15080 N pull at 0.5 MPa. The direct replacement is the SAI200AX75, which shares the exact same ISO 15552 mounting interface, G3/4 port, and output force. This SKU features a SUS420J2 stainless steel rod (-A) for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors.
The SAI200AX75 upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For applications requiring load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI lacked. A Viton H seal option expands the temperature range up to 150 C.
Airtac SI200 Standard Cylinder SI200AX75 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX75 |
| Bore size | Ø200 mm |
| Stroke | 75 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 SAI200AX75 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 SAI200AX75 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 SI200AX75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×75 | 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 SI200AX75 Is Used
Heavy Stamping Press
Drives large platens and heavy dies requiring 15708 N of thrust at 0.5 MPa, utilizing the 50 mm adjustable cushions to absorb high impact energy.
Large Mold Clamping
Secures substantial injection or cast molds using the SUS420J2 stainless rod option, providing reliable corrosion resistance in humid industrial environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX75 with the SAI200AX75
To replace the discontinued SI200AX75, order the SAI200AX75. Verify the ISO 15552 mounting interface, 200 mm bore, 75 mm stroke, G3/4 port, and M36x2 rod thread. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is required. Sizing both ways: a 160 mm bore offers 10053 N push at 0.5 MPa, while a 200 mm bore reaches 21991 N at 0.7 MPa. Note that a plain cylinder drifts on air loss—the 50 mm cushions only decelerate; use an external rod lock, pilot check valve, or SAIL/BSAI variant to hold loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX75
- ✓ 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 SI200AX75 FAQ
Yes, the SI200AX75 is discontinued. The direct replacement is the SAI200AX75. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 75 mm stroke, G3/4 port, and mounting interface.
It features a G3/4 air port. The thrust 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 max of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX75
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX75 replacement — usually within 7-8 hours.