This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X502SN, 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 SI100X502SN
The AirTAC Airtac SI100 Standard Cylinder SI100X502SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 502mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X502SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke502 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X502SN
- 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 SI100X502SN
The AirTAC SI100X502SN is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 502mm stroke. It delivers a push force of 3927 N at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100X502SN, which shares the same interface, force, and mounting fixtures.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. Note: 502mm is a nonstandard stroke exceeding the 500mm standard increment.
Airtac SI100 Standard Cylinder SI100X502SN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X502SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X502SN |
| Bore size | Ø100 mm |
| Stroke | 502 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 SAI100X502SN 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 SAI100X502SN 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 SI100X502SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×502 | 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 SI100X502SN Is Used
Heavy Press Clamping
Secures large metal castings during machining operations, utilizing the 3927 N push force at 0.5 MPa to hold components firmly against the fixture bed.
Pallet Diverting
Actuates heavy-duty routing gates on automated assembly lines, where the 502mm stroke provides the extended reach needed to redirect wide product loads.
Replacing the Airtac SI100 Standard Cylinder SI100X502SN with the SAI100X502SN
To replace the SI100X502SN, order the SAI100X502SN. Confirm the ISO 15552 mounting interface, G1/2 port, M20x1.5 rod thread, and the -S magnet for CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). Because 502mm is a nonstandard stroke (over the 500mm standard increment), ensure your external guide handles side loads to prevent rod bending over this long travel. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while this 100mm bore yields 5497 N at 0.7 MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X502SN
- ✓ 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 SI100X502SN FAQ
Yes, the SI100X502SN is discontinued. The direct replacement is the AirTAC SAI100X502SN. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 502mm stroke, G1/2 port, and mounting interface, so it fits existing fixtures perfectly.
The 100mm bore uses a G1/2 air port and features a 25mm piston rod. It delivers 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X502SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X502SN replacement — usually within 7-8 hours.