This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X160SH, 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 SI50X160SH
The AirTAC SI50 Standard Cylinder SI50X160SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X160SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X160SH
- 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 SI50X160SH
The AirTAC SI50X160SH is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 160mm stroke. Delivering 982N push force at 0.5MPa via a G1/4 port, it is replaced by the SAI50X160SH. The SAI is a direct upgrade keeping the exact interface, stroke, force and mounting.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. This -SH variant includes a Viton H seal for 0-150C environments and a magnet for CS1-B/DS1-B sensors.
Airtac SI50 Standard Cylinder SI50X160SH Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X160SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X160SH |
| Bore size | Ø50 mm |
| Stroke | 160 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 SAI50X160SH 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 SAI50X160SH 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 SI50X160SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×160 | 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 SI50X160SH Is Used
Hot-End Part Ejection
Uses the Viton H high-temperature seal to reliably push 982N at 0.5MPa when ejecting moulded components near heat sources.
Replacing the Airtac SI50 Standard Cylinder SI50X160SH with the SAI50X160SH
To replace the SI50X160SH, order the SAI50X160SH. Verify the ISO 15552 mounting interface, 160mm stroke, G1/4 port, M16x1.5 rod thread, and Viton H high-temp seal. The -S magnet enables CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. For sizing, a 40mm bore yields 628N push at 0.5MPa, while a 63mm bore yields 1559N. Air cushions only decelerate; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For this 160mm stroke, ensure guide alignment to prevent rod bending side-loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X160SH
- ✓ 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 SI50X160SH FAQ
Yes, the SI50X160SH is discontinued. The direct replacement is the SAI50X160SH, which maintains the same ISO 15552 mounting interface, 50mm bore, 160mm stroke, force, G1/4 port and accessories.
The 50mm bore uses a G1/4 port. It generates 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and 1767N push at 0.9MPa, with a theoretical maximum force of 200kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X160SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X160SH replacement — usually within 7-8 hours.