This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX150, 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 SI100AX150
The AirTAC Airtac SI100 Standard Cylinder SI100AX150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX150
- 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 SI100AX150
The AirTAC SI100AX150 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 150mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100AX150, retaining the exact ISO 15552 mounting interface, stroke, force, and accessories.
This SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The A suffix denotes a SUS420J2 stainless rod. Without an S suffix, this SKU cannot take a sensor. The SAI family adds SAIL, SAIF, and BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX150 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX150 |
| Bore size | Ø100 mm |
| Stroke | 150 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 SAI100AX150 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 SAI100AX150 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 SI100AX150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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 SI100AX150 Is Used
Heavy-Duty Pressing
Applies the 3927N push force at 0.5MPa for seating bearings or assembling large components securely.
Pallet Diversion
Handles robust 150mm stroke actuation to push heavy pallets off a main material handling line.
Replacing the Airtac SI100 Standard Cylinder SI100AX150 with the SAI100AX150
To replace the SI100AX150, order the SAI100AX150. Verify the ISO 15552 mounting fixture, G1/2 port, M20x1.5 rod thread, and SUS420J2 stainless rod. This non-magnet SKU cannot support CS1-B/DS1-B switches. Sizing both ways: a 100mm bore yields 3927N push at 0.5MPa (5497N at 0.7MPa); if oversizing, an 80mm bore gives 2513N. Air cushions only decelerate; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 150mm stroke, rod bending is low, but for strokes over 300mm add guide rails to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX150
- ✓ 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 SI100AX150 FAQ
Yes, the SI100AX150 is discontinued. The direct replacement is the SAI100AX150. It matches the ISO 15552 mounting interface, 100mm bore, 150mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
It features a G1/2 port. Force ratings are: 3927N push and 3681N pull at 0.5MPa; 5497N push at 0.7MPa; 7068N push at 0.9MPa; with a theoretical max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX150
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX150 replacement — usually within 7-8 hours.