This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X175STC, 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 SI200X175STC
The AirTAC SI200 Standard Cylinder SI200X175STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 175mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X175STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke175 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X175STC
- 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 SI200X175STC
The AirTAC SI200X175STC is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 175mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200X175STC, retaining the exact TC trunnion mount, M36x2 thread, and 50mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The original -S magnet works with CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI200 Standard Cylinder SI200X175STC Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X175STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X175STC |
| Bore size | Ø200 mm |
| Stroke | 175 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 SAI200X175STC 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 SAI200X175STC 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 SI200X175STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×175 | 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 SI200X175STC Is Used
Heavy Stamping Press
Drives large heavy-duty stamping presses requiring 15708 N of push force at 0.5 MPa with robust 50mm end cushions to absorb high kinetic energy.
Automotive Assembly Jig
Actuates massive automotive welding jigs, utilizing the TC trunnion mount to handle slight misalignments during multi-axis clamping operations.
Replacing the Airtac SI200 Standard Cylinder SI200X175STC with the SAI200X175STC
To replace the SI200X175STC, order the SAI200X175STC. Confirm the ISO 15552 TC trunnion interface, 175mm stroke, G3/4 port, and -S magnet. The SAI family adds SAIL (air-released lock) and BSAI (clamp-lock) variants the SI lacked. A plain cylinder drifts on air loss; cushions only decelerate, so use an external rod lock or pilot check valve for load holding. Sizing both ways: the 160mm bore yields 10053 N push @0.5 MPa, while the 200mm bore hits 21991 N @0.7 MPa. For this 175mm stroke, ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X175STC
- ✓ 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 SI200X175STC FAQ
Yes, the AirTAC SI200X175STC is discontinued. The direct replacement is the SAI200X175STC. It is dimensionally interchangeable per ISO 15552, maintaining the same 200mm bore, 175mm stroke, G3/4 port, TC mounting, 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, 28274 N push at 0.9 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, and it uses a G3/4 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X175STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X175STC replacement — usually within 7-8 hours.