This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX800, 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 SI100AX800
The AirTAC Airtac SI100 Standard Cylinder SI100AX800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX800, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX800
- 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 SI100AX800
The AirTAC SI100AX800 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 3927 N push force at 0.5 MPa through its 100 mm bore. It features a SUS420J2 stainless piston rod (-A), a G1/2 port, and an 800 mm stroke. Because this SKU lacks a magnet (-S), it cannot accept position sensors. The direct replacement is the SAI100AX800, sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note that a plain cylinder drifts on air loss; the air cushion only decelerates near stroke end. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX800 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX800 |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAI100AX800 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 SAI100AX800 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 SI100AX800
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SI100AX800 Is Used
Large Press Ejection
Provides the 3927 N push force needed to eject heavy stamped parts from a hydraulic press bed over an extended 800 mm travel distance.
Pallet Dispenser
Actuates large empty pallet stacks in automated warehouse infeed systems, requiring the full 100 mm bore stroke and robust ISO 15552 mounting.
Heavy Product Divert
Pushes bulky automotive components or appliances across a high-speed transfer conveyor, utilizing the long 800 mm stroke for wide lane transitions.
Replacing the Airtac SI100 Standard Cylinder SI100AX800 with the SAI100AX800
To replace the discontinued SI100AX800, order the SAI100AX800. Confirm your ISO 15552 mounting accessories (LB, FA, CA, TC) and the G1/2 port match. This unit has no magnet, so it cannot use CS1-B/DS1-B sensors; order a -S SAI if sensing is needed. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa (80 mm gives 2513 N). For the 800 mm stroke, use external guides to prevent rod bending and side-load damage. The cushion only decelerates; for load holding on air loss, specify a SAIL lock or external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX800
- ✓ 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 SI100AX800 FAQ
Yes, the SI100AX800 is discontinued. The direct replacement is the AirTAC SAI100AX800. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 800 mm stroke, force, G1/2 port, and mounting fixtures exactly.
The G1/2 port is fixed by the 100 mm bore. At 0.5 MPa it pushes 3927 N and pulls 3681 N. At 0.7 MPa push 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 SAI100AX800
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX800 replacement — usually within 7-8 hours.