This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X450TC, 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 SI200X450TC
The AirTAC SI200 Standard Cylinder SI200X450TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 450mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X450TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X450TC
- 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 SI200X450TC
The AirTAC SI200X450TC is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 450mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the direct replacement SAI200X450TC. This SAI upgrade shares the exact TC trunnion mounting, M36x2 thread, and 50mm cushions, but adds a two Y-shaped one-way piston seal for low start-up pressure.
Because this SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. For load holding, note that air cushions only decelerate; you need an external rod lock or SAIL/BSAI variant to prevent drift.
Airtac SI200 Standard Cylinder SI200X450TC Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X450TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X450TC |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAI200X450TC 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 SAI200X450TC 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 SI200X450TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SI200X450TC Is Used
Heavy Press Systems
Applies 15708 N at 0.5 MPa for forming and stamping heavy assemblies, utilizing the 450mm stroke to clear large tooling.
Large Mold Handling
Shifts substantial injection molds along the TC trunnion mount, benefiting from the 50mm adjustable cushions to stop 3204 kgf loads smoothly.
Replacing the Airtac SI200 Standard Cylinder SI200X450TC with the SAI200X450TC
To replace the SI200X450TC, order the SAI200X450TC. Confirm the ISO 15552 TC trunnion interface, 450mm stroke, G3/4 port, and M36x2 rod thread. Since this is a non-magnet SKU, it cannot support position sensing. Sizing both ways: a 160mm bore yields 10053 N push at 0.5 MPa, while the 200mm bore hits 21991 N at 0.7 MPa. For the 450mm stroke, use external guides to prevent rod bending and side loads. The cushion only decelerates; for dead-load holding, use a pilot check valve or the BSAI clamp-lock variant. The SAI family also offers SAIF valve integration for smaller bores.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X450TC
- ✓ 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 SI200X450TC FAQ
Yes, the SI200X450TC is discontinued. The direct replacement is the SAI200X450TC. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 450mm stroke, G3/4 port, TC trunnion mount, and output force.
The 200mm bore delivers 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s. It uses a G3/4 port and a 50mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X450TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X450TC replacement — usually within 7-8 hours.