This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX650, 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 SI200AX650
The AirTAC Airtac SI200 Standard Cylinder SI200AX650 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 SAI200AX650, 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 → SAI200AX650
- 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 SI200AX650
The AirTAC SI200AX650 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 650 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200AX650, which shares the exact same interface, output, and mounting. This specific SKU features a SUS420J2 stainless steel rod (-A) but lacks a magnet, meaning it cannot accept position sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or the SAIL/BSAI lock variants.
Airtac SI200 Standard Cylinder SI200AX650 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX650 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX650 |
| 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 SAI200AX650 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 SAI200AX650 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 SI200AX650
| 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 SI200AX650 Is Used
Heavy Machinery Forming
Drives large forming presses and heavy industrial machinery requiring up to 28274 N of thrust at 0.9 MPa with robust 200 mm bore capacity.
Large Tooling Clamps
Secures massive fabrication tooling and fixtures, utilizing the SUS420J2 stainless rod option for corrosion resistance in harsh manufacturing environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX650 with the SAI200AX650
To replace the discontinued SI200AX650, order the SAI200AX650. Confirm the ISO 15552 mounting interface, the 650 mm stroke, the G3/4 port, and your specific mounting accessory. Because this SKU lacks the -S magnet, it cannot support CS1-B/DS1-B sensors; if sensing is needed, switch to an SAI model with the S suffix. For sizing alternatives, dropping to a 160 mm bore reduces the 0.5 MPa push force to 10053 N, while staying at 200 mm increases it to 21991 N at 0.7 MPa. At 650 mm, the stroke is long, so use external guides to prevent rod bending and side-load damage. Finally, this cylinder will not hold a load without live air—use an external rod lock or the BSAI clamp-lock variant for secure holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX650
- ✓ 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 SI200AX650 FAQ
Yes, the AirTAC SI200AX650 is discontinued. The direct replacement is the SAI200AX650. It is dimensionally interchangeable per ISO 15552, maintaining the same 200 mm bore, 650 mm stroke, force, G3/4 port, and mounting interface.
This double-acting cylinder operates at 30-500 mm/s. 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 force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX650
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX650 replacement — usually within 7-8 hours.