This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX20S, 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 SI200BX20S
The AirTAC Airtac SI200 Standard Cylinder SI200BX20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX20S
- 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 SI200BX20S
The AirTAC SI200BX20S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 20mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200BX20S, matching the interface, force, and mounting. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. It also adds SAIL, SAIF, and BSAI variants the SI lacked. This unit has a -B SUS304 stainless rod and -S magnet for CS1-B/DS1-B sensors.
The SAI family uses current AirTAC switches. Note that a plain cylinder drifts on air loss; the cushion only decelerates. Use an external rod lock or SAIL/BSAI variant for holding.
Airtac SI200 Standard Cylinder SI200BX20S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX20S |
| Bore size | Ø200 mm |
| Stroke | 20 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 SAI200BX20S 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 SAI200BX20S 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 SI200BX20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×20 | 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 SI200BX20S Is Used
Heavy Pressing
Drives large stamping or forming presses requiring 15708 N of thrust at 0.5 MPa within a compact 20mm travel.
Clamp Systems
Secures heavy industrial workpieces in automated fixtures, utilizing the SUS304 stainless rod for washdown resistance.
Short Stroke Ejection
Ejects dense manufactured parts from molding machinery, safely handling a 9425 N working load over brief distances.
Replacing the Airtac SI200 Standard Cylinder SI200BX20S with the SAI200BX20S
To replace the discontinued SI200BX20S, order the SAI200BX20S. Confirm the ISO 15552 mounting interface, 200mm bore, 20mm stroke, G3/4 port, and -S magnet. The -B suffix denotes a SUS304 stainless rod, ideal for corrosive settings. If sizing up or down, neighboring bores are 160mm and 125mm. At 0.5 MPa, this bore pushes 15708 N and pulls 15080 N. Because a plain cylinder drifts without live air, use an external rod lock or pilot check valve for load holding, or specify the SAIL or BSAI lock variant. Stroke is under 300mm, so rod-bending side-load risks are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX20S
- ✓ 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 SI200BX20S FAQ
Yes, the AirTAC SI200BX20S is discontinued. The direct replacement is the SAI200BX20S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 20mm stroke, 15708 N force, G3/4 port, and mounting interface.
This double-acting cylinder uses a G3/4 air port. It generates 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 maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX20S replacement — usually within 7-8 hours.