This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX150, 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 SI100BX150
The AirTAC Airtac SI100 Standard Cylinder SI100BX150 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 SAI100BX150, 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 → SAI100BX150
- 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 SI100BX150
The AirTAC SI100BX150 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 150mm stroke, and a SUS304 stainless steel rod. It delivers 3927 N push and 3681 N pull at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100BX150, a direct sharing the exact ISO 15552 mounting interface, bore, output force, and cushioning.
The SAI upgrade features a new piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a magnet and cannot take a sensor; the SAI family also adds SAIL lock and BSAI clamp variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100BX150 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX150 |
| 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 SAI100BX150 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 SAI100BX150 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 SI100BX150
| 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 SI100BX150 Is Used
Heavy-Duty Pressing
Drives robust stamping and forming actions where the 3927 N push force at 0.5 MPa is required to seat or secure heavy components.
Stainless Rod Washdown
Operates in food or chemical processing zones where the SUS304 rod option prevents corrosion while moving heavy gates.
Replacing the Airtac SI100 Standard Cylinder SI100BX150 with the SAI100BX150
To replace the SI100BX150, order the SAI100BX150. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 air port, and the M20x1.5 rod thread. Because this SKU has no -S magnet, it cannot accept position switches; if sensing is needed, select an SAI model with a magnet. For sizing, a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. This 100mm bore provides 5497 N at 0.7 MPa and a theoretical max of 801 kgf at 1.0 MPa. A plain cylinder drifts without live air; the 36mm cushions only decelerate. For load holding, use an external pilot check valve or explore the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX150
- ✓ 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 SI100BX150 FAQ
Yes, the SI100BX150 is discontinued. The direct replacement is the SAI100BX150. It shares the identical ISO 15552 mounting interface, 100mm bore, 150mm stroke, G1/2 port, and output force, fitting directly into existing fixtures.
The G1/2 port is fixed by the 100mm bore. It produces 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 maximum of 801 kgf at 1.0 MPa. The speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX150
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