This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX700S, 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 SI100AX700S
The AirTAC Airtac SI100 Standard Cylinder SI100AX700S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 700mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX700S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX700S
- 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 SI100AX700S
The AirTAC SI100AX700S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 700mm stroke, and a SUS420J2 stainless piston rod. It delivers 3927N push force at 0.5MPa and features a G1/2 port. AirTAC replaced this legacy unit with the SAI100AX700S, a direct replacement retaining the exact ISO 15552 mounting interface, stroke, output force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. The built-in magnet supports legacy CS1-B/DS1-B sensors, while Viton H seals raise operating temperature to 150C.
Airtac SI100 Standard Cylinder SI100AX700S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX700S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX700S |
| Bore size | Ø100 mm |
| Stroke | 700 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 SAI100AX700S 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 SAI100AX700S 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 SI100AX700S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×700 | 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 SI100AX700S Is Used
Heavy Material Transfer
Drives large pallets or heavy assemblies along conveyor lines, utilizing the 3927N push force at 0.5MPa to move loads reliably without stalling.
Pallet Positioning Gates
Actuates heavy-duty routing gates or stops in automated warehouses, where the 700mm stroke provides the long reach needed to divert wide pallets.
Large Press Ejection
Ejects finished parts from large stamping or molding presses, benefiting from the SUS420J2 stainless rod for corrosion resistance in harsh environments.
Replacing the Airtac SI100 Standard Cylinder SI100AX700S with the SAI100AX700S
To replace the SI100AX700S, order the SAI100AX700S and confirm the ISO 15552 mounting interface, 100mm bore, 700mm stroke, G1/2 port, and your specific mounting accessory. The -S magnet enables CS1-B/DS1-B switches, while the -A rod specifies SUS420J2 stainless steel. Sizing both ways: the neighboring 80mm bore yields 2513N push at 0.5MPa, whereas the 125mm bore yields 6136N. Note that a plain cylinder drifts on air loss since the cushion only decelerates; for load holding, specify an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because 700mm exceeds 300mm, use external guides to prevent rod-bending side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX700S
- ✓ 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 SI100AX700S FAQ
Yes, the AirTAC SI100AX700S is discontinued. The direct replacement is the SAI100AX700S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 700mm stroke, G1/2 port, output force, and mounting accessories.
This double-acting cylinder uses a G1/2 port. The force ratings are: 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX700S
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