This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X60, 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 SI50X60
The AirTAC Airtac SI50 Standard Cylinder SI50X60 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 60mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X60, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke60 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X60
- 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 SI50X60
The AirTAC SI50X60 is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 60mm stroke. It delivers 982N push force at 0.5MPa via a G1/4 port. The direct replacement is the SAI50X60, which matches the exact bore, stroke, force, port, and mounting interface.
This SKU lacks a magnet and cannot accept a sensor. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. For load holding, the cushion only decelerates; use a pilot check valve or SAIL lock variant.
Airtac SI50 Standard Cylinder SI50X60 Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X60 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X60 |
| Bore size | Ø50 mm |
| Stroke | 60 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 SAI50X60 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 SAI50X60 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 SI50X60
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×60 | 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 SI50X60 Is Used
Package Diversion
Pushes medium-weight cartons on a packaging line using its 982N push force at 0.5MPa.
Replacing the Airtac SI50 Standard Cylinder SI50X60 with the SAI50X60
To replace the SI50X60, order the SAI50X60 ensuring the ISO 15552 interface, 50mm bore, 60mm stroke, G1/4 port, and mounting accessory match. This non-magnet SKU cannot take a sensor. Sizing both ways: a 40mm bore yields 628N push, while a 63mm bore yields 1559N at 0.5MPa. The cushion only decelerates; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The SAI family also adds the SAIF self-valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X60
- ✓ 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 SI50X60 FAQ
Yes, the SI50X60 is discontinued. The direct replacement is the SAI50X60, which shares the same ISO 15552 mounting interface, 50mm bore, 60mm stroke, output force, and G1/4 port.
It uses a G1/4 port. At 0.5MPa it pushes 982N and pulls 825N. At 0.7MPa push is 1374N. The theoretical maximum force is 200kgf at 1.0MPa.
Request a Quote for the SAI50X60
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X60 replacement — usually within 7-8 hours.