This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X70, 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 SI200X70
The AirTAC SI200 Standard Cylinder SI200X70 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 70mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X70, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X70
- 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 SI200X70
The AirTAC SI200X70 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 70mm stroke. Delivering 15708N push force at 0.5MPa via a G3/4 port, it is replaced by the SAI200X70. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force and port. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This non-magnetic SKU cannot accept a sensor, unlike legacy CS1-B/DS1-B switches. The SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked. For high heat, Viton H seals raise the temperature limit to 150C. A plain cylinder drifts on air loss; the 50mm cushions only decelerate. For load holding, use an external rod lock or SAIL/BSAI variant.
Airtac SI200 Standard Cylinder SI200X70 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X70 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X70 |
| Bore size | Ø200 mm |
| Stroke | 70 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 SAI200X70 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 SAI200X70 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 SI200X70
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SI200X70 Is Used
Heavy Press Stamping
Drives large metal forming presses requiring massive push force, utilizing the 15708N at 0.5MPa to shape thick plate stock reliably.
Mold Clamping Rigs
Secures large injection molds via the ISO 15552 interface, providing the rigid 200mm bore clamping power needed for industrial tooling.
Replacing the Airtac SI200 Standard Cylinder SI200X70 with the SAI200X70
To replace the discontinued SI200X70, order the SAI200X70. Verify the ISO 15552 mounting interface, 200mm bore, 70mm stroke, G3/4 port, and M36x2 rod thread. Because this SKU lacks the -S magnet, it cannot take a sensor; if position detection is needed, switch to an SAI200X70S. Sizing both ways: dropping to bore 160 yields 10053N push at 0.5MPa, while bore 200 provides 21991N at 0.7MPa. The standard 30-500mm/s speed range suits heavy cycles. Note that a standard cylinder drifts without live air; for holding, use an external pilot check valve or the SAIL/BSAI lock variant. Stroke is under 300mm, so side-load risks are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X70
- ✓ 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 SI200X70 FAQ
Yes, the AirTAC SI200X70 is discontinued. The direct replacement is the SAI200X70. It shares the same ISO 15552 mounting interface, 200mm bore, 70mm stroke, output force, G3/4 port, and M36x2 thread, fitting existing fixtures perfectly.
The 200mm bore uses a G3/4 port. It delivers 15708N push and 15080N pull at 0.5MPa, 21991N push at 0.7MPa, 28274N push at 0.9MPa, and a theoretical max of 3204kgf at 1.0MPa. Speed is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X70
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X70 replacement — usually within 7-8 hours.