This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX40, 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 SI200BX40
The AirTAC Airtac SI200 Standard Cylinder SI200BX40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX40
- 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 SI200BX40
The AirTAC SI200BX40 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 40mm stroke, delivering 15708N push force at 0.5MPa. AirTAC replaced this legacy unit with the SAI200BX40. This current-production direct maintains the exact ISO 15552 mounting interface, G3/4 port, and output force, fitting existing fixtures seamlessly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU lacks a magnet (-S), so it cannot accept position switches. The -B rod option specifies a SUS304 stainless piston rod for corrosion resistance.
Airtac SI200 Standard Cylinder SI200BX40 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX40 |
| Bore size | Ø200 mm |
| Stroke | 40 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 SAI200BX40 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 SAI200BX40 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 SI200BX40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×40 | 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 SI200BX40 Is Used
Heavy Press Forming
Generates up to 3204 kgf at 1.0 MPa for stamping and forming thick metal components in automated fabrication lines.
Pallet Lift Gates
Provides the robust vertical push (15708N at 0.5 MPa) required to raise loaded pallets and heavy industrial lift platforms.
Injection Molding Eject
Delivers reliable high-force ejection of dense molded parts, utilizing the 50mm adjustable air cushions to absorb impact.
Replacing the Airtac SI200 Standard Cylinder SI200BX40 with the SAI200BX40
To replace the discontinued SI200BX40, order the SAI200BX40. Verify your ISO 15552 mounting hardware (LB, FA, TC, etc.), the 40mm stroke, and the G3/4 port. Because this is a non-magnet SKU, it cannot support legacy CS1-B/DS1-B sensors; if position detection is needed, select an SAI200BX40S. Sizing both ways: this 200mm bore yields 15708N push at 0.5MPa; if oversizing is possible, a 160mm bore offers 10053N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve, or specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX40
- ✓ 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 SI200BX40 FAQ
Yes, the AirTAC SI200BX40 is discontinued. The direct replacement is the SAI200BX40. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 40mm stroke, G3/4 port, and mounting interface.
It features a G3/4 air port. Force outputs are: 15708N push and 15080N pull at 0.5 MPa; 21991N push at 0.7 MPa; 28274N push at 0.9 MPa; with a theoretical max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX40 replacement — usually within 7-8 hours.