This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X50CA, 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 SI100X50CA
The AirTAC Airtac SI100 Standard Cylinder SI100X50CA 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 SAI100X50CA, 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 → SAI100X50CA
- 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 SI100X50CA
The AirTAC SI100X50CA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 50mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X50CA, which matches the exact CA clevis mounting, M20x1.5 rod thread, and output force.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet (-S) and cannot take a CS1-B/DS1-B sensor. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X50CA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X50CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X50CA |
| 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 SAI100X50CA 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 SAI100X50CA 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 SI100X50CA
| 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 SI100X50CA Is Used
Heavy-Duty Pressing
Applies the 3927N push force at 0.5MPa for seating bearings and assembling heavy mechanical components.
Pallet Diverting
Uses the CA clevis mount to pivot and redirect heavy pallets along high-throughput packaging lines.
Material Lift Stops
Provides a robust 200kg vertical lift capacity to actuate gates and stops in automated storage systems.
Replacing the Airtac SI100 Standard Cylinder SI100X50CA with the SAI100X50CA
To replace the SI100X50CA, order the SAI100X50CA. Verify the ISO 15552 CA clevis mounting, 50mm stroke, and G1/2 port. Because this specific SKU has no magnet, it cannot support position sensing; if sensing is needed, specify an SAI100X50CA-S. Size both ways: a neighbouring 80mm bore yields 2513N push at 0.5MPa, while a 125mm bore yields 6136N. For load holding, note a plain cylinder drifts on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 50mm stroke is short, so side-load rod-bending is minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X50CA
- ✓ 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 SI100X50CA FAQ
Yes, the SI100X50CA is discontinued. The direct replacement is the SAI100X50CA. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the 100mm bore, 50mm stroke, G1/2 port, CA clevis, and output force.
The G1/2 port feeds the 25mm rod. Force ratings are 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X50CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X50CA replacement — usually within 7-8 hours.