This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX140S, 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 SI200AX140S
The AirTAC SI200 Standard Cylinder SI200AX140S 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 SAI200AX140S, 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 → SAI200AX140S
- 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 SI200AX140S
The AirTAC SI200AX140S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 140mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200AX140S, matching the interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This -A variant uses a SUS420J2 stainless rod for corrosion resistance, and the -S magnet works with legacy CS1-B/DS1-B switches. For load holding, note the cushion only decelerates; you need the SAIL lock variant or external valve.
Airtac SI200 Standard Cylinder SI200AX140S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX140S |
| 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 SAI200AX140S 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 SAI200AX140S 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 SI200AX140S
| 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 SI200AX140S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming presses requiring up to 21991 N of thrust at 0.7 MPa with robust 50 mm end cushions.
Automated Welding Arm
Positions large automated welding fixtures, utilizing the SUS420J2 stainless rod to resist weld spatter and plant corrosion.
Replacing the Airtac SI200 Standard Cylinder SI200AX140S with the SAI200AX140S
To replace the SI200AX140S, order the SAI200AX140S. Verify the ISO 15552 mounting interface, 200mm bore, 140mm stroke, G3/4 port, and your specific mounting accessory. The -A specifies the SUS420J2 stainless rod, and -S confirms the piston magnet for CS1-B/DS1-B sensors. Sizing both ways: this bore yields 15708 N push at 0.5 MPa (max 3204 kgf at 1.0 MPa); dropping to a 160mm bore gives 10053 N push. Since a plain cylinder drifts without live air, use an external pilot check valve or the SAIL/BSAI lock variant for held loads. The 140mm stroke is under the 300mm threshold, so rod-bending side-load risks are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX140S
- ✓ 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 SI200AX140S FAQ
Yes, the SI200AX140S is discontinued. The direct replacement is the SAI200AX140S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 140mm stroke, force, G3/4 port, and mounting fixtures.
This double-acting cylinder uses a G3/4 air port. At 0.5 MPa it provides 15708 N push and 15080 N pull force. At 0.7 MPa push is 21991 N, at 0.9 MPa it is 28274 N, and the theoretical maximum is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX140S replacement — usually within 7-8 hours.