This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X235, 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 SI100X235
The AirTAC Airtac SI100 Standard Cylinder SI100X235 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 235mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X235, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke235 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X235
- 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 SI100X235
The AirTAC SI100X235 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 235mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. Because 235mm is a non-standard stroke length, it requires custom sizing. AirTAC replaced this legacy unit with the SAI100X235, a direct replacement retaining the exact ISO 15552 mounting interface, M20x1.5 rod thread, and 36mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note this SKU lacks a magnet (-S) and cannot accept CS1-B/DS1-B sensors. For high-heat environments, Viton H seals raise the operating range to 0-150C.
Airtac SI100 Standard Cylinder SI100X235 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X235 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X235 |
| Bore size | Ø100 mm |
| Stroke | 235 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 SAI100X235 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 SAI100X235 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 SI100X235
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×235 | 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 SI100X235 Is Used
Heavy Press Clamping
Secures large metal castings in machining fixtures, utilizing the 3927N push force at 0.5MPa to hold components rigidly against cutting forces.
Bulk Material Diversion
Actuates heavy-duty lane deflectors on high-throughput packaging lines, relying on the 36mm adjustable air cushions to absorb end-of-stroke impact.
Replacing the Airtac SI100 Standard Cylinder SI100X235 with the SAI100X235
To replace the discontinued SI100X235, order the SAI100X235. Confirm your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port thread (PT/G/NPT), and the 235mm non-standard stroke requirement. This no-magnet SKU cannot support position sensing; if switches are needed, specify the SAI100X235S. Sizing checks: a neighboring 80mm bore yields 2513N push at 0.5MPa, while stepping up to 125mm provides 6136N. Remember that a standard cylinder drifts without live air—the cushions only decelerate near stroke end. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variants. At 235mm, ensure guide rails carry side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X235
- ✓ 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 SI100X235 FAQ
Yes, the SI100X235 is discontinued. The direct replacement is the AirTAC SAI100X235. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 235mm stroke, G1/2 port, and mounting interface, so it fits existing fixtures perfectly.
This double-acting cylinder uses a G1/2 air port. It generates 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X235
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X235 replacement — usually within 7-8 hours.