This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X75S, 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 SI200X75S
The AirTAC Airtac SI200 Standard Cylinder SI200X75S 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 SAI200X75S, 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 → SAI200X75S
- 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 SI200X75S
The AirTAC SI200X75S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 75 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X75S, a direct upgrade sharing the exact ISO 15552 mounting interface, M36x2 rod thread and 50 mm cushions.
The SAI replacement features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL and BSAI lock variants absent in the SI line.
Airtac SI200 Standard Cylinder SI200X75S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X75S |
| 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 SAI200X75S 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 SAI200X75S 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 SI200X75S
| 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 SI200X75S Is Used
Heavy Pressing
Drives large stamping and forming presses requiring 15708 N of push force at 0.5 MPa.
Industrial Clamping
Secures oversized fabricated steel components during machining using a rigid 40 mm rod.
Replacing the Airtac SI200 Standard Cylinder SI200X75S with the SAI200X75S
To replace the SI200X75S, order the SAI200X75S and confirm your ISO 15552 mounting accessories (LB, FA, CA, TC), G3/4 porting and the -S magnet for CS1-B/DS1-B sensors. If you need less force, the neighbouring 160 mm bore yields 10053 N push at 0.5 MPa; if you need more, note this 200 mm bore already hits 21991 N at 0.7 MPa. Because plain cylinders drift on air loss, use the SAIL or BSAI lock variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X75S
- ✓ 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 SI200X75S FAQ
Yes, the SI200X75S is discontinued. The direct replacement is the SAI200X75S, which shares the identical ISO 15552 mounting interface, 200 mm bore, 75 mm stroke, output force and G3/4 port.
It uses a G3/4 port and delivers 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. It operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X75S replacement — usually within 7-8 hours.