This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX260S, 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 SI200BX260S
The AirTAC Airtac SI200 Standard Cylinder SI200BX260S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 260mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX260S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke260 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX260S
- 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 SI200BX260S
The AirTAC SI200BX260S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 260mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a SUS304 stainless piston rod (-B), a G3/4 air port, and a built-in magnet (-S) for CS1-B/DS1-B sensors. AirTAC replaced this EOL unit with the SAI200BX260S.
The SAI200BX260S is a direct replacement, matching the exact ISO 15552 mounting interface, bore, output force, and port size. The upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The SAI family also adds SAIL and BSAI lock variants the SI lacked.
Airtac SI200 Standard Cylinder SI200BX260S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX260S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX260S |
| Bore size | Ø200 mm |
| Stroke | 260 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 SAI200BX260S 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 SAI200BX260S 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 SI200BX260S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×260 | 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 SI200BX260S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa with robust 200mm bore stability.
Large Mold Clamping
Secures oversized industrial molds in place, utilizing the SUS304 stainless rod for corrosive factory environments.
Replacing the Airtac SI200 Standard Cylinder SI200BX260S with the SAI200BX260S
To replace the discontinued SI200BX260S, order the SAI200BX260S. Confirm the ISO 15552 mounting interface, the 200mm bore, 260mm stroke, G3/4 port, and the -S magnet for legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). The -B SUS304 rod is retained. Sizing both ways: a 160mm bore yields 10053 N push at 0.5 MPa, while a 200mm bore hits 21991 N at 0.7 MPa. For stroke >=300mm, use a guide to prevent rod bending. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX260S
- ✓ 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 SI200BX260S FAQ
Yes, the SI200BX260S is discontinued. The direct replacement is the SAI200BX260S. It shares the identical ISO 15552 mounting interface, 200mm bore, 260mm stroke, G3/4 port, and output force, fitting your existing fixtures perfectly.
The 200mm bore provides 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, with a 50mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX260S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX260S replacement — usually within 7-8 hours.