This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX500S, 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 SI200BX500S
The AirTAC SI200 Standard Cylinder SI200BX500S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 500mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX500S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke500 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX500S
- 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 SI200BX500S
The AirTAC SI200BX500S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 500mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a SUS304 stainless piston rod (-B), a G3/4 port, and a built-in magnet (-S) for CS1-B/DS1-B sensors. AirTAC replaced this EOL unit with the SAI200BX500S, a direct sharing the exact ISO 15552 mounting interface, bore, and output force.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants absent in the SI line. Note that plain cylinders drift without air; cushions only decelerate.
Airtac SI200 Standard Cylinder SI200BX500S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX500S |
| Bore size | Ø200 mm |
| Stroke | 500 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 SAI200BX500S 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 SAI200BX500S 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 SI200BX500S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×500 | 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 SI200BX500S Is Used
Heavy Stamp Presses
Drives large press platens requiring 15708 N of push force at 0.5 MPa, utilizing the 500mm stroke for deep-draw operations.
Automated Assembly Fixtures
Actuates large industrial clamps over a 500mm distance, relying on the G3/4 port for rapid 30-500 mm/s cycling.
Replacing the Airtac SI200 Standard Cylinder SI200BX500S with the SAI200BX500S
To replace the SI200BX500S, order the SAI200BX500S, confirming the ISO 15552 mounting interface, 500mm stroke, G3/4 port, and the SUS304 rod (-B). The magnet (-S) supports legacy CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. Sizing both ways: a 160mm bore yields 10053 N push at 0.5 MPa, while the 200mm bore hits 21991 N at 0.7 MPa. For this 500mm stroke, use external guides to prevent rod bending and side loads. If you need load holding on air loss, the cushion will not lock the piston; specify an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX500S
- ✓ 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 SI200BX500S FAQ
Yes, the AirTAC SI200BX500S is discontinued. The direct replacement is the SAI200BX500S. It shares the identical ISO 15552 mounting interface, 200mm bore, 500mm stroke, output force, G3/4 port, and SUS304 rod material, fitting directly into existing fixtures.
This 200mm bore cylinder has a G3/4 air port and 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 max force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX500S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX500S replacement — usually within 7-8 hours.