This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X335, 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 SI100X335
The AirTAC SI100 Standard Cylinder SI100X335 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 335mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X335, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke335 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X335
- 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 SI100X335
The AirTAC SI100X335 is a discontinued double-acting ISO 15552 profile cylinder, delivering 3927 N of push force at 0.5 MPa through its 100 mm bore and 335 mm stroke. Because this legacy SI unit has reached end-of-life, AirTAC supplies the SAI100X335 as the direct replacement. It preserves the exact ISO 15552 mounting interface, G1/2 port size, and output force, dropping straight into your existing fixtures without mechanical modification.
The current-production SAI upgrade introduces an improved piston seal featuring two Y-shaped one-way elements for extended lifespan and lower start-up pressure. For this non-magnet SKU, position sensing is not supported, unlike the legacy CS1-B/DS1-B switches used on -S models. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the original SI line.
Airtac SI100 Standard Cylinder SI100X335 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X335 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X335 |
| Bore size | Ø100 mm |
| Stroke | 335 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 SAI100X335 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 SAI100X335 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 SI100X335
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×335 | 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 SI100X335 Is Used
Heavy Conveyor Diversion
Drives large diverter arms on high-capacity packaging lines, utilizing the 3927 N push force at 0.5 MPa to reliably shift heavy palletized goods.
Pallet Lift Gates
Actuates heavy-duty safety gates and lifting platforms in automated warehouses, where the 335 mm stroke provides the necessary vertical travel range.
Press Ejection Systems
Ejects formed metal or composite parts from large industrial presses, requiring the robust 100 mm bore and M20x1.5 rod to withstand impact loads.
Replacing the Airtac SI100 Standard Cylinder SI100X335 with the SAI100X335
To replace the discontinued SI100X335, order the SAI100X335, confirming the ISO 15552 mounting interface, 100 mm bore, 335 mm stroke, and G1/2 port (available in PT, G, or NPT threads). Retain your original mounting accessory (LB, FA, FB, CA, CB, TC, etc.) and note that this specific SKU lacks a magnet (-S), so it cannot accept a magnetic sensor. For sizing alternatives, dropping to an 80 mm bore reduces the 0.5 MPa push force to 2513 N, while stepping up to 125 mm increases it to 6136 N. Because this is a 335 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X335
- ✓ 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 SI100X335 FAQ
Yes, the SI100X335 is discontinued. The direct replacement is the AirTAC SAI100X335. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 335 mm stroke, output force, G1/2 port, and mounting interface, so it fits existing fixtures directly.
The G1/2 port is fixed by the 100 mm bore. At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At 0.7 MPa, the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X335
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X335 replacement — usually within 7-8 hours.