This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X350TC, 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 SI200X350TC
The AirTAC SI200 Standard Cylinder SI200X350TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X350TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X350TC
- 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 SI200X350TC
The AirTAC SI200X350TC is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 350 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200X350TC, a direct upgrade sharing the exact TC trunnion mounting, bore, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this specific SI SKU lacks the -S magnet, it cannot accept a position switch.
Airtac SI200 Standard Cylinder SI200X350TC Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X350TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X350TC |
| Bore size | Ø200 mm |
| Stroke | 350 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 SAI200X350TC 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 SAI200X350TC 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 SI200X350TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×350 | 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 SI200X350TC Is Used
Heavy Stamp Press Feeding
Drives robust 801 kg vertical lifts and heavy material loading arms into large industrial presses using its 15708 N push force.
Large Mold Actuation
Provides the high axial thrust required to open and close heavy injection molds or large fabrication tooling safely.
Palletizer Lift Stations
Handles substantial vertical movement in automated palletizing lines where the 350 mm stroke and TC trunnion manage heavy load transitions.
Replacing the Airtac SI200 Standard Cylinder SI200X350TC with the SAI200X350TC
To replace the SI200X350TC, order the SAI200X350TC. Confirm the ISO 15552 TC trunnion interface, 200 mm bore, 350 mm stroke, M36x2 rod thread, and G3/4 port (PT/G/NPT options). Since this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, specify a magnet on the new SAI. At 0.5 MPa this bore yields 15708 N push and 15080 N pull; if less force is acceptable, a 160 mm bore provides 10053 N. For higher demands, the system maxes at 3204 kgf at 1.0 MPa. 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 variants for hold. Finally, the 350 mm stroke demands external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X350TC
- ✓ 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 SI200X350TC FAQ
Yes, the SI200X350TC is discontinued. The direct replacement is the AirTAC SAI200X350TC. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 350 mm stroke, TC mounting, and G3/4 port.
At 0.5 MPa it provides 15708 N push and 15080 N pull. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical max force is 3204 kgf at 1.0 MPa, with an operating speed of 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X350TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X350TC replacement — usually within 7-8 hours.