This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX25, 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 SI200BX25
The AirTAC Airtac SI200 Standard Cylinder SI200BX25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 25mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX25
- 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 SI200BX25
The AirTAC SI200BX25 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 25mm stroke. It delivers 15708N push force at 0.5MPa via a G3/4 port. The direct replacement is the SAI200BX25, matching the exact bore, force, port, and ISO 15552 mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This specific SKU lacks a magnet, so it cannot accept position switches. The SUS304 stainless rod option suits corrosive settings.
Airtac SI200 Standard Cylinder SI200BX25 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX25 |
| Bore size | Ø200 mm |
| Stroke | 25 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 SAI200BX25 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 SAI200BX25 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 SI200BX25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×25 | 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 SI200BX25 Is Used
Heavy Press Tonnage
Generates 15708N at 0.5MPa for short-stroke stamping, forming, and heavy-duty clamping in metal fabrication lines.
Mold Ejection Systems
Provides reliable 25mm ejection force in injection molding machinery, utilizing the 3204kgf maximum theoretical output.
Replacing the Airtac SI200 Standard Cylinder SI200BX25 with the SAI200BX25
To replace the SI200BX25, order the SAI200BX25. Confirm the ISO 15552 mounting interface, 200mm bore, 25mm stroke, G3/4 port, and M36x2 thread. Because this SKU has no -S suffix, it cannot support legacy CS1-B/DS1-B sensors. For sizing, stepping down to a 160mm bore yields 10053N push at 0.5MPa, while the 200mm bore hits 21991N at 0.7MPa. Note that a plain cylinder drifts without air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant. The 40mm rod and 50mm cushions handle the 30-500mm/s speed range safely.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX25
- ✓ 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 SI200BX25 FAQ
Yes, the AirTAC SI200BX25 is discontinued. The direct replacement is the SAI200BX25. It shares the identical ISO 15552 mounting interface, 200mm bore, 25mm stroke, 15708N force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder uses a G3/4 port. At 0.5MPa it pushes 15708N and pulls 15080N. At 0.7MPa push is 21991N, and at 0.9MPa it is 28274N. The theoretical maximum force is 3204kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX25
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX25 replacement — usually within 7-8 hours.