This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X200SH, 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 SI50 Standard Cylinder SI50X200SH
The AirTAC SI50 Standard Cylinder SI50X200SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X200SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X200SH
- 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 SI50 Standard Cylinder SI50X200SH
The AirTAC SI50X200SH is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 200mm stroke. Delivering 982N push force at 0.5MPa, it features a G1/4 port, M16x1.5 rod thread, and a high-temperature Viton H seal rated for 0-150C. The direct replacement is the SAI50X200SH, matching the ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet supports CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants.
Airtac SI50 Standard Cylinder SI50X200SH Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X200SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X200SH |
| Bore size | Ø50 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI50X200SH carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAI50X200SH produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI50 Standard Cylinder SI50X200SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SI50 Standard Cylinder SI50X200SH Is Used
Hot End Ejection
Handles parts near heat sources where the Viton H seal survives 0-150C, using 982N push force to clear molded components reliably.
Transfer Diversion
Pushes items across belts at 30-800mm/s, utilizing the G1/4 port and 200mm stroke for precise routing in packaging lines.
Replacing the Airtac SI50 Standard Cylinder SI50X200SH with the SAI50X200SH
To replace the SI50X200SH, order the SAI50X200SH. Verify the ISO 15552 mounting interface, 50mm bore, 200mm stroke, G1/4 port, and high-temp Viton H seal. The -S magnet works with CS1-B/DS1-B switches. For sizing, the 50mm bore yields 982N push at 0.5MPa; step down to 40mm for 628N or up to 63mm for 1559N. Note that plain cylinders drift on air loss as cushions only decelerate; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. At 200mm stroke, rod bending risks are low, but maintain guide alignment to prevent side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X200SH
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI50 Standard Cylinder SI50X200SH FAQ
Yes, the SI50X200SH is discontinued. The direct replacement is the SAI50X200SH. It is dimensionally interchangeable per ISO 15552, matching the 50mm bore, 200mm stroke, G1/4 port, and mounting interface exactly.
The 50mm bore features a G1/4 air port and M16x1.5 rod thread. It delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical max of 200kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X200SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X200SH replacement — usually within 7-8 hours.