This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X40S, 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 SI200X40S
The AirTAC Airtac SI200 Standard Cylinder SI200X40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X40S
- 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 SI200X40S
The AirTAC SI200X40S is a discontinued double-acting ISO 15552 profile cylinder, delivering a robust 15708 N push force at 0.5 MPa through its 200 mm bore. It features a 40 mm carbon steel piston rod, M36x2 thread, 50 mm adjustable air cushions at both ends, and a G3/4 port. Because this legacy unit is end-of-life, the direct replacement is the SAI200X40S, which preserves the exact ISO 15552 mounting interface, bore, stroke, force, and porting for seamless fixture integration.
Upgrading to the SAI200X40S brings an advanced piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. The SAI family also introduces variants the SI lacked, such as the SAIL air-released lock and BSAI clamp-lock. This -S model retains a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI replacement uses current AirTAC switches.
Airtac SI200 Standard Cylinder SI200X40S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X40S |
| Bore size | Ø200 mm |
| Stroke | 40 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 SAI200X40S 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 SAI200X40S 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 SI200X40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×40 | 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 SI200X40S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring high thrust over a short 40 mm travel distance.
Industrial Clamp
Secures massive fabricated steel components during welding or machining with 15708 N of force.
Platen Pressing
Applies steady downward clamping pressure on large composite or rubber molding platens.
Replacing the Airtac SI200 Standard Cylinder SI200X40S with the SAI200X40S
To replace the discontinued SI200X40S, order the SAI200X40S and verify your ISO 15552 mounting accessories (LB, FA, CA, TC), G3/4 port threads, and the 40 mm stroke requirement. The SAI is dimensionally interchangeable per ISO 15552 and retains the M36x2 rod thread. If sizing alternatives, a neighbouring 160 mm bore yields 10053 N push at 0.5 MPa, whereas stepping up is unnecessary if 15708 N suffices. Because this is a plain double-acting cylinder, it will not hold a load without live air; the cushions only decelerate near stroke end. For suspended loads, select the SAIL or BSAI lock variant, or install an external pilot check valve. The standard speed range is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X40S
- ✓ 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 SI200X40S FAQ
Yes, the SI200X40S is discontinued. The direct replacement is the SAI200X40S. It shares the identical ISO 15552 mounting interface, 200 mm bore, 40 mm stroke, output force, and G3/4 port, fitting directly into your existing fixtures.
The 200 mm bore features a G3/4 port. At 0.5 MPa it provides 15708 N push and 15080 N pull force. 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X40S replacement — usually within 7-8 hours.