This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X300CB, 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 SI200X300CB
The AirTAC SI200 Standard Cylinder SI200X300CB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X300CB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X300CB
- 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 SI200X300CB
The AirTAC SI200X300CB is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 300mm stroke. It delivers 15708 N push and 15080 N pull at 0.5 MPa through a G3/4 port, using a 40mm rod with an M36x2 thread. Because this legacy unit lacks a -S magnet, it cannot accept a position sensor.
AirTAC replaced it with the SAI200X300CB, a direct sharing the same ISO 15552 mounting interface, CB clevis mount, force and port. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure, and introduces SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI200 Standard Cylinder SI200X300CB Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X300CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X300CB |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAI200X300CB 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 SAI200X300CB 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 SI200X300CB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SI200X300CB Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring 15708 N of push force at 0.5 MPa, using the 50mm adjustable cushion to absorb heavy impact at stroke end.
Automated Welding Clamp
Secures heavy structural steel members in robotic welding cells, relying on the robust 40mm carbon steel rod and CB clevis mount for rigid fixture alignment.
Replacing the Airtac SI200 Standard Cylinder SI200X300CB with the SAI200X300CB
To replace the SI200X300CB, order the SAI200X300CB. It drops into existing fixtures via the identical ISO 15552 CB clevis mounting interface, matching the 200mm bore, 300mm stroke, G3/4 port and M36x2 rod thread. If you need position sensing, note this specific legacy SKU has no magnet; you must select an SAI equivalent with the S suffix for CS1-B/DS1-B switches. For sizing alternatives, a 160mm bore yields 10053 N push at 0.5 MPa, while a 200mm bore hits 21991 N at 0.7 MPa. Since this is a 300mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X300CB
- ✓ 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 SI200X300CB FAQ
Yes, the AirTAC SI200X300CB is discontinued. The direct replacement is the SAI200X300CB. It shares the identical ISO 15552 CB clevis mounting interface, 200mm bore, 300mm stroke, output force and G3/4 port, fitting existing fixtures perfectly while adding an upgraded piston seal.
It uses a G3/4 air port. The thrust is 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, with a theoretical maximum of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X300CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X300CB replacement — usually within 7-8 hours.