This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X50SH, 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 SI200X50SH
The AirTAC SI200 Standard Cylinder SI200X50SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X50SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X50SH
- 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 SI200X50SH
The AirTAC SI200X50SH is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 50 mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and a 50 mm adjustable air cushion. The direct replacement is the SAI200X50SH, matching the interface, force, and port. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
This -SH configuration includes a piston magnet for CS1-B/DS1-B switches and a Viton H high-temperature seal (0 to 150 C). Note that standard cylinders drift without live air; use the SAIL or BSAI lock variants for load holding.
Airtac SI200 Standard Cylinder SI200X50SH Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X50SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X50SH |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAI200X50SH 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 SAI200X50SH 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 SI200X50SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×50 | 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 SI200X50SH Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 15708 N push force at 0.5 MPa with robust 50 mm cushions.
Injection Molding
Actuates heavy mold cores and ejectors in high-temp environments using the Viton H seal rated for 150 C.
Replacing the Airtac SI200 Standard Cylinder SI200X50SH with the SAI200X50SH
To replace the discontinued SI200X50SH, order the SAI200X50SH. Verify the ISO 15552 mounting interface, 200 mm bore, 50 mm stroke, G3/4 port, and magnet. The SAI family adds SAIL, SAIF, and BSAI variants absent in the SI line. If downsizing, a 160 mm bore yields 10053 N push at 0.5 MPa. If upsizing beyond 200 mm, confirm from datasheet. For load holding on air loss, add an external rod lock or pilot check valve, as cushions only decelerate. The Viton H seal supports 0-150 C. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X50SH
- ✓ 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 SI200X50SH FAQ
Yes, the SI200X50SH is discontinued. The direct replacement is the SAI200X50SH. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 50 mm stroke, 15708 N force, G3/4 port, and mounting interface.
The 200 mm bore uses a G3/4 port. Force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X50SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X50SH replacement — usually within 7-8 hours.