This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX45, 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 SI200AX45
The AirTAC Airtac SI200 Standard Cylinder SI200AX45 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 45mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX45, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke45 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX45
- 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 SI200AX45
The AirTAC SI200AX45 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 45 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200AX45, matching the exact bore, stroke, force, port, and ISO 15552 mounting interface for seamless fixture integration.
This SKU features a SUS420J2 stainless steel rod (A suffix) but lacks a magnet, meaning it cannot accept position sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that air cushions only decelerate; use an external rod lock or pilot check valve.
Airtac SI200 Standard Cylinder SI200AX45 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX45 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX45 |
| Bore size | Ø200 mm |
| Stroke | 45 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 SAI200AX45 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 SAI200AX45 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 SI200AX45
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×45 | 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 SI200AX45 Is Used
Heavy Pressing
Ideal for applying high 15708 N clamping forces at 0.5 MPa in heavy-duty metal forming and press fit operations.
Industrial Stamping
Drives robust stamping tools where the 200 mm bore and 45 mm short stroke deliver rapid, high-impact actuation.
Platen Lowering
Controls the descent of heavy platens, utilizing the 50 mm adjustable air cushions to decelerate safely at stroke end.
Replacing the Airtac SI200 Standard Cylinder SI200AX45 with the SAI200AX45
To replace the SI200AX45, order the SAI200AX45, confirming the ISO 15552 mounting interface, 200 mm bore, 45 mm stroke, G3/4 port, and SUS420J2 rod. Because this non-magnet SKU cannot take a sensor, order an SAI with the S suffix if position detection is needed. Sizing down to bore 160 yields 10053 N push at 0.5 MPa, while sizing up is impossible as 200 mm is the largest. The plain cylinder does not hold load without air; use a pilot check valve or the SAIL/BSAI lock variant. The 45 mm stroke is short, so side-load risks are minimal, but always verify rod alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX45
- ✓ 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 SI200AX45 FAQ
Yes, the AirTAC SI200AX45 is discontinued. The direct replacement is the SAI200AX45. It shares the identical ISO 15552 mounting interface, 200 mm bore, 45 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
The 200 mm bore uses a G3/4 port. 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 max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX45
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX45 replacement — usually within 7-8 hours.