This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX300S, 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 SI200BX300S
The AirTAC SI200 Standard Cylinder SI200BX300S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX300S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX300S
- 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 SI200BX300S
The AirTAC SI200BX300S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 300mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a SUS304 stainless piston rod, a G3/4 air port, and a built-in magnet for CS1-B/DS1-B sensors. AirTAC replaced this end-of-line unit with the SAI200BX300S, a direct sharing the exact ISO 15552 mounting interface, force, and cushioning.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that a standard cylinder drifts without air; the cushion only decelerates. Use the SAIL or BSAI lock variants if needed.
Airtac SI200 Standard Cylinder SI200BX300S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX300S |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAI200BX300S 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 SAI200BX300S 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 SI200BX300S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SI200BX300S Is Used
Heavy Press Systems
Drives large forming presses requiring 21991 N push force at 0.7 MPa, utilizing the 50mm adjustable cushion to decelerate heavy tooling.
Pallet Lift Actuators
Lifts loaded pallets up to 801 kg in vertical material handling setups, relying on external guides to manage the 300mm stroke side loads.
Automated Assembly Jigs
Actuates massive industrial fixtures on automated lines, where the SUS304 stainless rod provides corrosion resistance in harsh environments.
Replacing the Airtac SI200 Standard Cylinder SI200BX300S with the SAI200BX300S
To replace the SI200BX300S, order the SAI200BX300S. Verify the ISO 15552 mounting interface, 300mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. If downsizing, a 160mm bore yields 10053 N push at 0.5 MPa; if upsizing is impossible, this 200mm bore maxes at 3204 kgf at 1.0 MPa. Because the 300mm stroke risks rod bending under side loads, use external guides to prevent premature seal wear. For load holding on air loss, add an external rod lock or pilot check valve, as the cushion only decelerates. The SAI family also adds SAIL and BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX300S
- ✓ 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 SI200BX300S FAQ
Yes, the SI200BX300S is discontinued. The direct replacement is the AirTAC SAI200BX300S. It shares the identical ISO 15552 mounting interface, 200mm bore, 300mm stroke, G3/4 port, and output force, fitting directly into existing fixtures.
The 200mm bore features a G3/4 air port and provides 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a maximum theoretical force of 3204 kgf at 1.0 MPa. The operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX300S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX300S replacement — usually within 7-8 hours.