This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX375, 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 SI200AX375
The AirTAC Airtac SI200 Standard Cylinder SI200AX375 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 375mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX375, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke375 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX375
- 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 SI200AX375
The AirTAC SI200AX375 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 375mm stroke. Built with an extruded aluminum barrel and adjustable air cushions, it delivers 15708 N push and 15080 N pull at 0.5 MPa through its G3/4 port. The direct replacement is the SAI200AX375, which matches the exact ISO 15552 mounting interface, M36x2 rod thread, and output force.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This specific SKU uses a SUS420J2 stainless steel rod (A suffix) for corrosion resistance, but lacks a magnet so it cannot accept CS1-B or DS1-B sensors.
Airtac SI200 Standard Cylinder SI200AX375 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX375 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX375 |
| Bore size | Ø200 mm |
| Stroke | 375 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 SAI200AX375 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 SAI200AX375 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 SI200AX375
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×375 | 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 SI200AX375 Is Used
Heavy Press Forming
Drives large metal stamping and forming presses requiring up to 15708 N of push force at 0.5 MPa, utilizing the 375mm stroke for deep draw operations.
Large Mold Clamping
Secures heavy industrial molds and fixtures on production lines, relying on the SUS420J2 stainless rod for corrosion resistance in humid environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX375 with the SAI200AX375
To replace this SI200AX375, order the SAI200AX375. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G3/4 port thread, and the 375mm stroke. If you need to size both ways, neighboring bores are 160mm and 125mm; at 0.5 MPa this 200mm bore provides 15708 N push, while the 160mm offers 10053 N. Because this is a 375mm stroke, add external guides to prevent rod-bending under side loads. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or explore the SAIL or BSAI lock variants. Finally, this no-S SKU cannot mount a magnetic sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX375
- ✓ 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 SI200AX375 FAQ
Yes, the SI200AX375 is discontinued. The direct replacement is the SAI200AX375. It shares the same ISO 15552 mounting interface, 200mm bore, 375mm stroke, G3/4 port, and output force, fitting directly into existing fixtures.
This 200mm bore cylinder features a G3/4 air port and M36x2 rod thread. It 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 maximum of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX375
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX375 replacement — usually within 7-8 hours.