This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X295S, 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 SI100X295S
The AirTAC Airtac SI100 Standard Cylinder SI100X295S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 295mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X295S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke295 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X295S
- 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 SI100X295S
The AirTAC SI100X295S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 295 mm stroke, delivering a push force of 3927 N at 0.5 MPa. It features a Ø25 mm piston rod, M20x1.5 rod thread, and a G1/2 air port. The direct replacement is the SAI100X295S, which matches the original ISO 15552 mounting interface, bore, stroke, output force, and port size exactly.
The SAI upgrade introduces a refined piston seal utilizing two Y-shaped one-way elements for extended lifespan and lower start-up pressure. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL, SAIF, and BSAI lock or valve variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X295S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X295S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X295S |
| Bore size | Ø100 mm |
| Stroke | 295 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 SAI100X295S 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 SAI100X295S 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 SI100X295S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×295 | 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 SI100X295S Is Used
Heavy-Duty Pressing
Drives 3927 N of push force at 0.5 MPa for seating bearings, stamping light-gauge materials, and assembling heavy mechanical components.
Pallet Diversion
Actuates heavy lane deflector gates and sorting pop-up stops on high-throughput packaging and warehouse conveyor lines.
Replacing the Airtac SI100 Standard Cylinder SI100X295S with the SAI100X295S
To replace the SI100X295S, order the SAI100X295S and verify your ISO 15552 mounting fixtures, G1/2 port threads (PT/G/NPT), and the -S magnet requirement for current AirTAC switches. This 100 mm bore yields 3927 N push at 0.5 MPa; if undersizing, an 80 mm bore provides 2513 N, and if oversizing, a 125 mm bore offers 6136 N. Because the 295 mm stroke is near the column length limit, ensure adequate guide support to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X295S
- ✓ 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 SI100X295S FAQ
Yes, the AirTAC SI100X295S is discontinued. The direct replacement is the SAI100X295S. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 295 mm stroke, output force, G1/2 port, and mounting interface.
This double-acting cylinder has a G1/2 air port. The thrust ratings are: 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 SAI100X295S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X295S replacement — usually within 7-8 hours.