This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X140S, 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 SI200X140S
The AirTAC SI200 Standard Cylinder SI200X140S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 140mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X140S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke140 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X140S
- 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 SI200X140S
The AirTAC SI200X140S is a discontinued double-acting ISO 15552 profile cylinder delivering 15708 N push force at 0.5 MPa through its 200 mm bore. It features a 40 mm carbon steel rod, M36x2 thread, and a built-in piston magnet for CS1-B/DS1-B sensors. AirTAC replaced this legacy unit with the SAI200X140S, a direct upgrade retaining the exact ISO 15552 mounting interface, 140 mm stroke, G3/4 port, and output force.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For high-temperature environments up to 150 C, Viton H seals are available, and the SAI family adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI200 Standard Cylinder SI200X140S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X140S |
| Bore size | Ø200 mm |
| Stroke | 140 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 SAI200X140S 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 SAI200X140S 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 SI200X140S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×140 | 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 SI200X140S Is Used
Heavy Press Clamping
Generates 21991 N at 0.7 MPa to secure large metal castings or heavy machinery bases during machining and pressing operations.
Stamping Press Ram
Drives large industrial forming tools with a 140 mm stroke, utilizing the 50 mm adjustable air cushions to absorb massive end-of-stroke kinetic energy.
Replacing the Airtac SI200 Standard Cylinder SI200X140S with the SAI200X140S
To replace the SI200X140S, order the SAI200X140S and verify the ISO 15552 mounting fixture, 140 mm stroke, G3/4 port (PT/G/NPT), and the -S magnet for current AirTAC switches. This 200 mm bore yields 15708 N push at 0.5 MPa; if sizing down, a 160 mm bore provides 10053 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use the SAIL or BSAI lock variant, an external rod lock, or a pilot check valve for load holding. The 40 mm rod and 50 mm cushions handle heavy dynamics, but for any stroke over 300 mm, guide the load to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X140S
- ✓ 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 SI200X140S FAQ
Yes, the SI200X140S is discontinued. The direct replacement is the AirTAC SAI200X140S. It shares the identical ISO 15552 mounting interface, 200 mm bore, 140 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
It features a G3/4 port and delivers 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X140S replacement — usually within 7-8 hours.