This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX650, 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 SI200BX650
The AirTAC Airtac SI200 Standard Cylinder SI200BX650 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 650mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX650, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX650
- 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 SI200BX650
The AirTAC SI200BX650 is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 650mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N push force at 0.5 MPa and utilizes a G3/4 air port. AirTAC replaced this legacy unit with the SAI200BX650, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, output force, and porting.
The SAI200BX650 introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU includes a SUS304 stainless steel rod (the -B option) for corrosion resistance, but lacks a magnet so it cannot accept a sensor.
Airtac SI200 Standard Cylinder SI200BX650 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX650 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX650 |
| Bore size | Ø200 mm |
| Stroke | 650 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 SAI200BX650 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 SAI200BX650 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 SI200BX650
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×650 | 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 SI200BX650 Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 28274 N of thrust at 0.9 MPa, utilizing the robust 40mm piston rod.
Large Mold Handling
Actuates heavy industrial mold transfer carts and clamping fixtures where the SUS304 stainless rod prevents corrosion.
Replacing the Airtac SI200 Standard Cylinder SI200BX650 with the SAI200BX650
To replace the SI200BX650, order the SAI200BX650 and verify your existing fixture matches the ISO 15552 mounting interface dimensions. Retain your original mounting hardware (LB, FA, TC, etc.) and confirm the G3/4 port thread (PT, G, or NPT). Because this 650mm stroke is long, guard against rod bending by ensuring external guides carry side loads. If downsizing is possible, a 160mm bore yields 10053 N push at 0.5 MPa; if upsizing is needed, you are already at the family maximum. Note this SKU has no magnet (-S) and cannot support legacy CS1-B/DS1-B sensors. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX650
- ✓ 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 SI200BX650 FAQ
Yes, the AirTAC SI200BX650 is discontinued. The direct replacement is the SAI200BX650. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 650mm stroke, force, G3/4 port, and mounting interface, so it drops directly into existing fixtures.
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, 28274 N push at 0.9 MPa, and a theoretical maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX650
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX650 replacement — usually within 7-8 hours.