This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX145, 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 SI200AX145
The AirTAC Airtac SI200 Standard Cylinder SI200AX145 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 145mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX145, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke145 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX145
- 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 SI200AX145
The AirTAC SI200AX145 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 145 mm stroke. It delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200AX145, which matches the original G3/4 port, M36x2 thread, and ISO 15552 mounting interface. This specific SKU features a SUS420J2 stainless steel rod (the -A option) for corrosion resistance, but lacks a magnet, meaning it cannot accept position sensors.
Upgrading to the SAI200AX145 retains all ratings while adding an upgraded piston seal with two Y-shaped elements for low start-up pressure. Note that a plain cylinder drifts without live air; for load holding, explore the SAIL or BSAI lock variants.
Airtac SI200 Standard Cylinder SI200AX145 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX145 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX145 |
| Bore size | Ø200 mm |
| Stroke | 145 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 SAI200AX145 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 SAI200AX145 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 SI200AX145
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×145 | 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 SI200AX145 Is Used
Heavy Stamp Pressing
Drives large presses with 15708 N push at 0.5 MPa, utilizing the SUS420J2 stainless rod to resist moisture in heavy industrial environments.
Large Gate Actuation
Actuates heavy fluid control gates, relying on the G3/4 air port and 50 mm adjustable cushions to manage massive flow and decelerate smoothly.
Replacing the Airtac SI200 Standard Cylinder SI200AX145 with the SAI200AX145
To replace the discontinued SI200AX145, order the SAI200AX145. Confirm the ISO 15552 mounting interface, 200 mm bore, 145 mm stroke, G3/4 port, and your specific mounting accessory. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, switch to an SAI model with the S suffix. Sizing both ways: this bore yields 15708 N push at 0.5 MPa, while the neighboring 160 mm bore offers 10053 N. If your stroke was 300 mm or longer, add external guides to prevent rod bending, though 145 mm is safe. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX145
- ✓ 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 SI200AX145 FAQ
Yes, the SI200AX145 is discontinued. The direct replacement is the SAI200AX145. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 145 mm stroke, 15708 N force, G3/4 port, and mounting interface.
This double-acting cylinder has a 200 mm bore with a 40 mm rod. It generates 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX145
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX145 replacement — usually within 7-8 hours.