This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX50, 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 SI200AX50
The AirTAC Airtac SI200 Standard Cylinder SI200AX50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX50
- 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 SI200AX50
The AirTAC SI200AX50 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 50 mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200AX50, matching the interface, force, and mounting exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This SKU uses a SUS420J2 stainless rod (option A) but lacks a magnet, so it cannot take CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200AX50 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX50 |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAI200AX50 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 SAI200AX50 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 SI200AX50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×50 | 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 SI200AX50 Is Used
Heavy Pressing
Drives large stamping or forming presses requiring 15708 N of thrust at 0.5 MPa.
Pallet Lifting
Lifts heavy pallets or chassis components, safely managing an 801 kg vertical load.
Clamp Fixtures
Secures massive weldments in machining fixtures using the robust ISO 15552 mounting.
Replacing the Airtac SI200 Standard Cylinder SI200AX50 with the SAI200AX50
To replace the SI200AX50, order the SAI200AX50. Confirm the ISO 15552 mounting interface, 50 mm stroke, G3/4 port, and SUS420J2 rod. This non-magnet SKU cannot accept switches. For load holding, note the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. If downsizing, a 160 mm bore yields 10053 N at 0.5 MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX50
- ✓ 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 SI200AX50 FAQ
Yes, the SI200AX50 is discontinued. The direct replacement is the SAI200AX50, which shares the same ISO 15552 mounting interface, 200 mm bore, 50 mm stroke, force, and G3/4 port.
It uses a G3/4 port. Forces are: 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX50 replacement — usually within 7-8 hours.