This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX165, 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 SI100AX165
The AirTAC Airtac SI100 Standard Cylinder SI100AX165 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 165mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX165, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX165
- 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 SI100AX165
The AirTAC SI100AX165 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and adjustable air cushions at both ends. It delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa, utilizing a G1/2 port and an M20x1.5 rod thread. The direct replacement is the SAI100AX165, which maintains the exact same ISO 15552 mounting interface, 100 mm bore, 165 mm stroke, force, and porting for seamless fixture integration.
This specific SKU features a SUS420J2 stainless steel piston rod for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors. Upgrading to the SAI100AX165 brings an improved piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Airtac SI100 Standard Cylinder SI100AX165 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX165 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX165 |
| Bore size | Ø100 mm |
| Stroke | 165 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 SAI100AX165 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 SAI100AX165 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 SI100AX165
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×165 | 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 SI100AX165 Is Used
Heavy-Duty Pressing
Drives robust pressing and stamping operations requiring up to 5497 N of push force at 0.7 MPa, utilizing the SUS420J2 stainless rod for corrosion resistance.
Pallet Diversion
Actuates heavy pallet stops and diverters on high-throughput packaging lines, handling the 165 mm stroke to clear or block large product flows safely.
Replacing the Airtac SI100 Standard Cylinder SI100AX165 with the SAI100AX165
To replace the discontinued SI100AX165, order the SAI100AX165 and verify your ISO 15552 mounting interface, bore, stroke, and G1/2 port. Because this is a non-magnet SKU, it cannot support switches; if sensing is required, select an SAI model with the -S suffix for CS1-B/DS1-B compatibility. Sizing both ways: the 100 mm bore provides 5497 N push at 0.7 MPa, while neighboring bores like the 80 mm offer 3518 N and the 125 mm offers 8590 N. Note that a plain double-acting cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. The -A rod material is SUS420J2 stainless steel, an upgrade from the standard carbon steel rod.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX165
- ✓ 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 SI100AX165 FAQ
Yes, the AirTAC SI100AX165 is discontinued. The direct replacement is the SAI100AX165. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 165 mm stroke, G1/2 port, and mounting interface, but features an upgraded piston seal for longer life.
The 100 mm bore uses a G1/2 port and features an M20x1.5 rod thread. Force output is 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, with a theoretical maximum of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX165
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX165 replacement — usually within 7-8 hours.