This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X40, 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 SI200X40
The AirTAC Airtac SI200 Standard Cylinder SI200X40 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 SAI200X40, 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 → SAI200X40
- 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 SI200X40
The AirTAC SI200X40 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 40 mm stroke, delivering 15708 N of push force at 0.5 MPa through its G3/4 port. The direct replacement is the SAI200X40, which matches the original bore, stroke, output force, and mounting interface.
Because this specific SKU lacks the -S magnet suffix, it cannot accept a position sensor. The SAI200X40 upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Airtac SI200 Standard Cylinder SI200X40 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X40 |
| 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 SAI200X40 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 SAI200X40 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 SI200X40
| 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 SI200X40 Is Used
Heavy-Duty Pressing
Drives large stamping and forming dies requiring massive push force, utilizing the 15708 N output at 0.5 MPa to seat heavy components reliably.
Industrial Clamp Systems
Secures oversized fabrications during welding or machining, providing stable clamping via the robust 200 mm bore profile barrel.
Massive Platen Lowering
Controls the descent of heavy platens using adjustable 50 mm air cushions at both ends to decelerate the load smoothly before the stroke end.
Replacing the Airtac SI200 Standard Cylinder SI200X40 with the SAI200X40
To replace the discontinued SI200X40, order the SAI200X40 and verify your ISO 15552 mounting interface, M36x2 rod thread, and G3/4 port. Since this original SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if switching is required, select an SAI model with the magnet option. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock, pilot check valve, or consider the SAIL or BSAI lock variants. If sizing down, a 160 mm bore offers 10053 N at 0.5 MPa; if sizing up, this 200 mm bore reaches 21991 N at 0.7 MPa. For any stroke over 300 mm, use guide rails to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X40
- ✓ 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 SI200X40 FAQ
Yes, the SI200X40 is discontinued. The direct replacement is the SAI200X40. It features the same ISO 15552 mounting interface, 200 mm bore, 40 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
This double-acting cylinder uses a G3/4 air port. The force output is 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a theoretical maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X40 replacement — usually within 7-8 hours.