This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX210S, 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 SI200BX210S
The AirTAC Airtac SI200 Standard Cylinder SI200BX210S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 210mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX210S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke210 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX210S
- 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 SI200BX210S
The AirTAC SI200BX210S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 210mm stroke. Built with an extruded aluminum barrel and a SUS304 stainless piston rod (-B), it delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200BX210S, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, and force ratings.
The SAI replacement features an upgraded piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life. This -S variant includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also introduces SAIL and BSAI lock variants absent in the original SI line.
Airtac SI200 Standard Cylinder SI200BX210S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX210S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX210S |
| Bore size | Ø200 mm |
| Stroke | 210 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 SAI200BX210S 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 SAI200BX210S 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 SI200BX210S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×210 | 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 SI200BX210S Is Used
Heavy Stamping Press
Drives large platens in metal forming presses where the 28274 N push force at 0.9 MPa and robust 40mm SUS304 rod handle high-impact cyclic loads.
Automotive Assembly Jig
Actuates heavy structural clamps on vehicle welding lines, utilizing the 15080 N pull force at 0.5 MPa to secure chassis components during robotic welding.
Replacing the Airtac SI200 Standard Cylinder SI200BX210S with the SAI200BX210S
To replace the discontinued SI200BX210S, order the SAI200BX210S. Confirm the ISO 15552 mounting interface, the 200mm bore, 210mm stroke, and the G3/4 port. Retain your existing mounting accessories and PT/G/NPT thread preferences. Because this model includes the -S magnet and -B SUS304 rod, specify these on the SAI order; the SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B set. Sizing context: the neighboring 160mm bore yields 10053 N push at 0.5 MPa, whereas this 200mm bore yields 15708 N. A plain cylinder drifts without live air, so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 210mm stroke, rod buckling is minimal, but always guide the load to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX210S
- ✓ 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 SI200BX210S FAQ
Yes, the SI200BX210S is discontinued. The direct replacement is the SAI200BX210S. It shares the identical ISO 15552 mounting interface, 200mm bore, 210mm stroke, output force, G3/4 port, and mounting accessories, fitting directly into existing fixtures.
This double-acting cylinder features a G3/4 air port and a 40mm piston rod. The thrust ratings are 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 force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX210S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX210S replacement — usually within 7-8 hours.