This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X50SCA, 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 SI100 Standard Cylinder SI100X50SCA
The AirTAC Airtac SI100 Standard Cylinder SI100X50SCA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X50SCA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X50SCA
- 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 SI100 Standard Cylinder SI100X50SCA
The AirTAC SI100X50SCA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 50mm stroke, and CA clevis mounting. Delivering 3927 N of push force at 0.5 MPa, it features a 25mm rod, M20x1.5 thread, and G1/2 port. The direct replacement is the SAI100X50SCA, which matches the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X50SCA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X50SCA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X50SCA |
| Bore size | Ø100 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X50SCA carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X50SCA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X50SCA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SI100 Standard Cylinder SI100X50SCA Is Used
Heavy Press Clamping
Secures large metal castings during machining operations using the 3927 N push force, with the CA clevis accommodating multi-axis pivot movements.
Bulk Package Divert
Drives heavy-duty routing arms on high-throughput packaging lines, moving dense goods via the robust 25mm piston rod and G1/2 air supply.
Replacing the Airtac SI100 Standard Cylinder SI100X50SCA with the SAI100X50SCA
To replace the SI100X50SCA, order the SAI100X50SCA. Confirm the ISO 15552 CA clevis mount, 50mm stroke, G1/2 port (PT/G/NPT thread options), and the -S magnet for current AirTAC switches. Sizing both ways: dropping to an 80mm bore yields 2513 N push at 0.5 MPa, while stepping up to 125mm provides 6136 N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X50SCA
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X50SCA FAQ
Yes, the SI100X50SCA is discontinued. The direct replacement is the SAI100X50SCA. It shares the identical ISO 15552 mounting interface, 100mm bore, 50mm stroke, output force, G1/2 port, and CA clevis, fitting directly into existing fixtures.
The bore is 100mm with a G1/2 port. Force output is 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X50SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X50SCA replacement — usually within 7-8 hours.