This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX225, 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 SI200BX225
The AirTAC Airtac SI200 Standard Cylinder SI200BX225 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 225mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX225, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX225
- 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 SI200BX225
The AirTAC SI200BX225 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 225 mm stroke. Built with an extruded aluminum barrel and adjustable air cushions, it delivers 15708 N of push force at 0.5 MPa. The direct replacement is the SAI200BX225, sharing the same interface, G3/4 port, and output.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. The SI200BX225 variant uses a SUS304 stainless steel rod, but lacks a magnet, so it cannot accept legacy CS1-B/DS1-B switches. For load holding, note that cushions only decelerate; you need an external pilot check valve or the SAIL lock variant.
Airtac SI200 Standard Cylinder SI200BX225 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX225 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX225 |
| Bore size | Ø200 mm |
| Stroke | 225 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 SAI200BX225 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 SAI200BX225 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 SI200BX225
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×225 | 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 SI200BX225 Is Used
Heavy Press Forming
Applies the 15708 N push force at 0.5 MPa to form thick metal components, utilizing the 225 mm stroke for deep-draw operations.
Industrial Clamp
Secures large fabricated steel structures during machining, relying on the 50 mm adjustable air cushions to decelerate the heavy 200 mm piston smoothly.
Replacing the Airtac SI200 Standard Cylinder SI200BX225 with the SAI200BX225
To replace the discontinued SI200BX225, order the SAI200BX225. Verify the ISO 15552 mounting dimensions, the 225 mm stroke, and the G3/4 port. Because this SKU lacks a magnet (-S), it cannot support position sensing; if detection is needed, select an SAI200BX225S and use current AirTAC switches. At 0.5 MPa, the push force is 15708 N; if you need less force, step down to a 160 mm bore (10053 N push), or if more force is required, 0.7 MPa yields 21991 N. For this 225 mm stroke, side-load and rod-bending risks are moderate, so ensure proper guide alignment. Remember that a standard cylinder drifts without live air—for holding loads, use the SAIL air-released lock, the BSAI clamp-lock, or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX225
- ✓ 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 SI200BX225 FAQ
Yes, the SI200BX225 is discontinued. The direct replacement is the SAI200BX225. It is dimensionally interchangeable per ISO 15552, maintaining the same 200 mm bore, 225 mm stroke, G3/4 port, and mounting interface, so it fits existing fixtures directly.
This double-acting cylinder features a G3/4 port. 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 SAI200BX225
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX225 replacement — usually within 7-8 hours.