This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX270, 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 SI200BX270
The AirTAC SI200 Standard Cylinder SI200BX270 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 270mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX270, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX270
- 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 SI200BX270
The AirTAC SI200BX270 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 270mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200BX270. This direct upgrade shares the exact ISO 15552 mounting interface, bore, and output force. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. As this SKU lacks a magnet (-S), it cannot accept a CS1-B/DS1-B sensor.
The SAI family adds variants the SI lacked: SAIL (air-released lock), SAIF (built-in valve), and BSAI (clamp-lock). Note this plain cylinder drifts on air loss; the 50 mm cushions only decelerate. For high heat, Viton H seals raise the limit to 150 C, and a SUS304 rod (option B) adds corrosion resistance.
Airtac SI200 Standard Cylinder SI200BX270 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX270 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX270 |
| Bore size | Ø200 mm |
| Stroke | 270 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 SAI200BX270 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 SAI200BX270 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 SI200BX270
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×270 | 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 SI200BX270 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping and forming presses requiring up to 15708 N of push force at 0.5 MPa.
Pallet Lifting Station
Actuates robust pallet lifting and heavy material transfer stations handling vertical loads around 801 kg.
Industrial Clamp Rig
Secures large fabricated steel components in welding and machining rigs using its 15080 N pull force.
Replacing the Airtac SI200 Standard Cylinder SI200BX270 with the SAI200BX270
To replace the discontinued SI200BX270, order the SAI200BX270. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the 270mm stroke, and the G3/4 port. Because this specific SKU has no magnet, it cannot support position sensing; if you need switches, select an SAI200BX270S and use current AirTAC sensors. The 200mm bore yields 15708 N push and 15080 N pull at 0.5 MPa. If sizing down, a 160mm bore provides 10053 N push; if sizing up, max theoretical force is 3204 kgf at 1.0 MPa. For load holding on air loss, the cushions only decelerate; add an external pilot check valve or use the SAIL/BSAI lock variant. Since the 270mm stroke is under 300mm, severe rod-bending side loads are less critical, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX270
- ✓ 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 SI200BX270 FAQ
Yes, the AirTAC SI200BX270 is discontinued. The direct replacement is the SAI200BX270. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 200mm bore, 270mm stroke, force, and G3/4 port, so it fits existing fixtures directly.
The 200mm bore features a G3/4 air port and an M36x2 rod thread. It delivers 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX270
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX270 replacement — usually within 7-8 hours.