This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX140, 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 SI100AX140
The AirTAC Airtac SI100 Standard Cylinder SI100AX140 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 140mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX140, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX140
- 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 SI100AX140
The AirTAC SI100AX140 is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore, 140mm stroke, SUS420J2 stainless piston rod and G1/2 port. It delivers 3927 N push force at 0.5 MPa. As this legacy unit is end-of-life, the direct is the SAI100AX140, matching the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this specific SKU lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor.
Airtac SI100 Standard Cylinder SI100AX140 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX140 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX140 |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAI100AX140 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 SAI100AX140 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 SI100AX140
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SI100AX140 Is Used
Heavy Press Clamping
Secures large metal castings during machining, using the 5497 N push force at 0.7 MPa to prevent workpiece shift under aggressive cutting loads.
Pallet Lift Stations
Raises loaded pallets vertically, safely handling the 200 kg computed vertical lift capacity while benefiting from the SUS420J2 stainless rod in humid dock environments.
Package Diverting
Actuates heavy diverting gates on high-throughput packaging lines, relying on the 36 mm adjustable air cushions to decelerate the 25 mm rod at stroke ends.
Replacing the Airtac SI100 Standard Cylinder SI100AX140 with the SAI100AX140
To replace the SI100AX140, order the SAI100AX140. Verify the ISO 15552 mounting interface, 100mm bore, 140mm stroke, G1/2 port and SUS420J2 rod. Because this SKU has no -S magnet, it cannot hold a switch. For sizing, neighbouring bores offer different force classes; at 0.5 MPa this 100mm bore yields 3927 N push and 3681 N pull, peaking at 801 kgf. The cushion only decelerates; it does not hold load. For drop prevention on air loss, use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX140
- ✓ 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 SI100AX140 FAQ
Yes, the SI100AX140 is discontinued. The direct replacement is the SAI100AX140. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 140mm stroke, G1/2 port and mounting interface.
It has a G1/2 port. Force outputs 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 max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX140
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX140 replacement — usually within 7-8 hours.