This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX20S, 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 SI200AX20S
The AirTAC Airtac SI200 Standard Cylinder SI200AX20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX20S
- 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 SI200AX20S
The AirTAC SI200AX20S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 20mm stroke. It delivers 15708N push force at 0.5MPa via a G3/4 port. The direct replacement is the SAI200AX20S, which maintains identical ISO 15552 mounting dimensions, output, and porting. This short-stroke variant features an SUS420J2 stainless piston rod for corrosion resistance and a built-in magnet for legacy CS1-B/DS1-B sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note that plain cylinders drift on air loss; the cushion only decelerates. For load holding, explore the SAIL or BSAI lock variants, or use external pilot check valves.
Airtac SI200 Standard Cylinder SI200AX20S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX20S |
| Bore size | Ø200 mm |
| Stroke | 20 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 SAI200AX20S 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 SAI200AX20S 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 SI200AX20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×20 | 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 SI200AX20S Is Used
Heavy Stamping Clamp
Secures large metal blanks in a 200-ton press using 15708N of clamping force, where the SUS420J2 stainless rod resists coolant splashing.
Mold Locking Pin
Provides a robust 20mm stroke locking action for heavy injection molds, utilizing the theoretical 3204kgf max force at 1.0MPa to hold position.
High-Force Diverter
Actuates massive bulk material diverter gates in mining or aggregate plants, where the short 20mm stroke and 801kg vertical lift capacity ensure positive gate seating.
Replacing the Airtac SI200 Standard Cylinder SI200AX20S with the SAI200AX20S
To replace the SI200AX20S, order the SAI200AX20S. Confirm the ISO 15552 interface, 200mm bore, 20mm stroke, G3/4 port, and mounting accessory. The SAI uses upgraded seals but keeps the same M36x2 thread and 50mm cushions. Because this is a short 20mm stroke, side-load risks are minimal, but always verify rod alignment. If you need more force, the neighbouring bore is 160mm (10053N push at 0.5MPa); if less, 125mm offers 6136N. The SUS420J2 rod and -S magnet are retained. For load-holding without live air, select the SAIL or BSAI lock variant, or an external rod lock. The SAI family also adds the SAIF self-valve option, though only for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX20S
- ✓ 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 SI200AX20S FAQ
Yes, the AirTAC SI200AX20S is discontinued. The direct replacement is the SAI200AX20S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 20mm stroke, 15708N force, G3/4 port, and mounting interface.
This double-acting cylinder uses a G3/4 air port. The thrust ratings are: 15708N push and 15080N pull at 0.5MPa; 21991N push at 0.7MPa; 28274N push at 0.9MPa; and a theoretical maximum force of 3204kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX20S replacement — usually within 7-8 hours.