This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX275S, 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 SI200AX275S
The AirTAC SI200 Standard Cylinder SI200AX275S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX275S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke275 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX275S
- 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 SI200AX275S
The AirTAC SI200AX275S is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 275 mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. AirTAC replaced this legacy unit with the SAI200AX275S, a direct sharing the exact ISO 15552 mounting interface, stroke, force, and accessories. The -A suffix indicates a SUS420J2 stainless steel piston rod for corrosion resistance, while the -S denotes a piston magnet for legacy CS1-B/DS1-B sensors.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that a standard cylinder cannot hold a load without live air; the cushion only decelerates. For secure holding, consider the SAIL or BSAI lock variants.
Airtac SI200 Standard Cylinder SI200AX275S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX275S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX275S |
| Bore size | Ø200 mm |
| Stroke | 275 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 SAI200AX275S 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 SAI200AX275S 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 SI200AX275S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×275 | 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 SI200AX275S Is Used
Heavy Stamping Press
Drives large platens and heavy dies requiring 15708 N of thrust at 0.5 MPa, utilizing the SUS420J2 stainless rod to resist coolant corrosion.
Pallet Lowering Unit
Manages vertical descent of 800 kg payloads safely, relying on the 50 mm adjustable air cushions to decelerate before the end of stroke.
Large Mold Clamping
Secures substantial injection or compression molds using the 200 mm bore's massive 3204 kgf theoretical maximum output at 1.0 MPa.
Replacing the Airtac SI200 Standard Cylinder SI200AX275S with the SAI200AX275S
To replace the discontinued SI200AX275S, order the SAI200AX275S. Verify your ISO 15552 mounting fixtures, the 275 mm stroke, and the G3/4 air port. Because this unit has the -A rod, ensure the SAI is also specified with the SUS420J2 stainless rod; the -S magnet means it accepts CS1-B/DS1-B switches (the SAI family uses current AirTAC sensors). Sizing both ways: a neighboring 160 mm bore yields 10053 N push at 0.5 MPa, while a 200 mm bore hits 21991 N at 0.7 MPa. For any stroke over 300 mm, guide external loads to prevent rod bending and side-load wear. If you need static load holding on air loss, do not rely on the cushions—add an external rod lock, a pilot check valve, or step up to the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX275S
- ✓ 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 SI200AX275S FAQ
Yes, the SI200AX275S is discontinued. The direct replacement is the AirTAC SAI200AX275S. It shares the identical ISO 15552 mounting interface, 200 mm bore, 275 mm stroke, G3/4 port, and output force, fitting directly into your existing fixtures.
This double-acting cylinder features a G3/4 air port and a 40 mm piston rod. It generates 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 force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX275S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX275S replacement — usually within 7-8 hours.