This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X50, 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 SI200X50
The AirTAC Airtac SI200 Standard Cylinder SI200X50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X50
- 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 SI200X50
The AirTAC SI200X50 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 50mm stroke, delivering 15708 N push force at 0.5 MPa. It is replaced by the direct replacement SAI200X50, which shares the exact ISO 15552 mounting interface, G3/4 port, and output force. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life.
This non-magnetic SKU cannot accept a sensor. The original SI used CS1-B/DS1-B switches, but this unit lacks the -S magnet. The cushion only decelerates the load; it does not hold position on air loss. For locked loads, explore the SAIL or BSAI variants. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B), and Viton H seals raise the temperature range to 0-150 C.
Airtac SI200 Standard Cylinder SI200X50 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X50 |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAI200X50 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 SAI200X50 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 SI200X50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×50 | 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 SI200X50 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa, utilizing the 50mm stroke for rapid high-impact actuation.
Industrial Clamp Rig
Secures massive fabricated steel components during welding, using the 200mm bore's immense clamping power and robust 40mm piston rod.
Replacing the Airtac SI200 Standard Cylinder SI200X50 with the SAI200X50
To replace the SI200X50, order the SAI200X50. Confirm the ISO 15552 mounting interface (LB, FA, TC, etc.), the G3/4 port, and the M36x2 rod thread. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a -S variant if position detection is needed. For sizing, the 200mm bore yields 15708 N push at 0.5 MPa; if less force is acceptable, step down to a 160mm bore (10053 N). If more force is required, 1.0 MPa yields 3204 kgf. Note that a plain cylinder drifts without live air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X50
- ✓ 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 SI200X50 FAQ
Yes, the AirTAC SI200X50 is discontinued. The direct replacement is the SAI200X50. It is dimensionally interchangeable per ISO 15552, maintaining the same 200mm bore, 50mm stroke, output force, G3/4 port, and mounting accessories.
The 200mm bore features a G3/4 air port and a 40mm rod. 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 SAI200X50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X50 replacement — usually within 7-8 hours.