This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X60SCA, 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 SI50X60SCA
The AirTAC SI50 Standard Cylinder SI50X60SCA 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 SAI50X60SCA, 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 → SAI50X60SCA
- 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 SI50X60SCA
The AirTAC SI50X60SCA is a discontinued double-acting ISO 15552 profile cylinder with a 50 mm bore and 60 mm stroke. It delivers 982 N push force at 0.5 MPa via a G1/4 port. AirTAC replaced this legacy unit with the SAI50X60SCA, a direct sharing the exact ISO 15552 mounting interface, CA clevis, and output force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The SI's built-in magnet pairs with CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI50 Standard Cylinder SI50X60SCA Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X60SCA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X60SCA |
| 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 SAI50X60SCA 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 SAI50X60SCA 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 SI50X60SCA
| 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 SI50X60SCA Is Used
Package Diverting
Actuates a CA clevis-mounted routing arm on a packaging line to push parcels, utilizing the 982 N push force at 0.5 MPa for reliable lateral diversion.
Pallet Stops
Functions as a pneumatic stop gate on a roller conveyor, raising and lowering a 20 mm carbon steel rod to halt pallet movement safely.
Replacing the Airtac SI50 Standard Cylinder SI50X60SCA with the SAI50X60SCA
To replace the SI50X60SCA, order the SAI50X60SCA. Verify the ISO 15552 interface, 50 mm bore, 60 mm stroke, G1/4 port, and CA clevis mounting. The -S magnet accommodates CS1-B/DS1-B sensors on the SI; the SAI takes current AirTAC switches. If you need more force, the 63 mm bore yields 1559 N at 0.5 MPa; if less, the 40 mm bore gives 628 N. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Rod options include carbon steel, SUS420J2 (A), or SUS304 (B); seals include NBR or Viton H for 0-150 C heat.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X60SCA
- ✓ 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 SI50X60SCA FAQ
Yes, the SI50X60SCA is discontinued. The direct replacement is the SAI50X60SCA. It shares the identical ISO 15552 mounting interface, 50 mm bore, 60 mm stroke, G1/4 port, and CA clevis, fitting existing fixtures perfectly.
The 50 mm bore uses a G1/4 port. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. The rod is 20 mm with an M16x1.5 thread, and speed ranges 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X60SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X60SCA replacement — usually within 7-8 hours.