This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX350, 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 SI200BX350
The AirTAC SI200 Standard Cylinder SI200BX350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX350
- 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 SI200BX350
The AirTAC SI200BX350 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 350 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200BX350, matching the exact bore, stroke, force, port and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet, so it cannot take a sensor. For high heat, choose the Viton H seal option.
Airtac SI200 Standard Cylinder SI200BX350 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX350 |
| Bore size | Ø200 mm |
| Stroke | 350 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 SAI200BX350 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 SAI200BX350 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 SI200BX350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×350 | 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 SI200BX350 Is Used
Heavy Press Operations
Drives large forming and stamping presses requiring 21991 N push force at 0.7 MPa to mold dense materials.
Industrial Clamp Systems
Secures oversized fabricated steel structures during machining via the 3204 kgf maximum holding force.
Replacing the Airtac SI200 Standard Cylinder SI200BX350 with the SAI200BX350
To replace this SI with the SAI200BX350, verify the ISO 15552 mounting interface, 350 mm stroke, G3/4 port, and M36x2 rod thread. Because this is a non-magnet SKU, it cannot accept CS1-B/DS1-B sensors. If sensing is needed, order an SAI with the S suffix. Size both ways: the 160 mm neighbor yields 10053 N push at 0.5 MPa, while this 200 mm bore hits 21991 N at 0.7 MPa. A plain cylinder drifts on air loss; for load holding use an external pilot check valve or the SAIL/BSAI lock variant. At 350 mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX350
- ✓ 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 SI200BX350 FAQ
Yes, the SI200BX350 is discontinued. The direct replacement is the SAI200BX350. It features the same ISO 15552 mounting interface, 200 mm bore, 350 mm stroke, output force, G3/4 port and accessories, fitting existing fixtures perfectly.
It provides 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical max is 3204 kgf at 1.0 MPa. It has a G3/4 port, 50 mm cushion, and operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX350
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX350 replacement — usually within 7-8 hours.