This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X400SH, 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 SI200X400SH
The AirTAC SI200 Standard Cylinder SI200X400SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X400SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X400SH
- 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 SI200X400SH
The AirTAC SI200X400SH is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 400mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200X400SH. This direct upgrade shares the exact ISO 15552 mounting interface, M36x2 thread, and 50mm cushions. The SAI features an upgraded piston seal (two Y-shaped one-way elements for low start-up pressure) and the -H Viton seal handles 0-150 C. CS1-B/DS1-B sensors work with the -S magnet.
The SAI family adds SAIL and BSAI lock variants absent in the SI line. Note that a plain cylinder drifts on air loss; cushions only decelerate.
Airtac SI200 Standard Cylinder SI200X400SH Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X400SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X400SH |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAI200X400SH 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 SAI200X400SH 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 SI200X400SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SI200X400SH Is Used
Heavy Stamping
Drives large presses delivering 21991 N at 0.7 MPa for forming thick metal components.
Injection Molding
Actuates heavy mold cores, utilizing the 50mm adjustable cushions to decelerate massive loads.
Replacing the Airtac SI200 Standard Cylinder SI200X400SH with the SAI200X400SH
To replace the SI200X400SH, order the SAI200X400SH. Confirm the ISO 15552 mounting fixture, 200mm bore, 400mm stroke, G3/4 port, and -S magnet / -H Viton seal. It sizes bidirectionally: drop to 160mm (10053 N @0.5 MPa) or push to 1.0 MPa (3204 kgf max). For the 400mm stroke, use external guides to prevent rod bending. A plain cylinder does not hold load without air; use an external rod lock or the SAIL/BSAI variant for holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X400SH
- ✓ 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 SI200X400SH FAQ
Yes, the SI200X400SH is discontinued. The direct replacement is the SAI200X400SH, matching the ISO 15552 mounting interface, bore, stroke, force, and G3/4 port.
It features a G3/4 port and 50mm cushions. Forces are 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a 3204 kgf max at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X400SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X400SH replacement — usually within 7-8 hours.