This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX165, 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 SI100BX165
The AirTAC Airtac SI100 Standard Cylinder SI100BX165 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 SAI100BX165, 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 → SAI100BX165
- 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 SI100BX165
The AirTAC SI100BX165 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 165mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100BX165, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting accessories.
The SAI100BX165 features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. This specific SI100BX165 variant uses a SUS304 stainless steel rod (-B) for corrosion resistance, but lacks a magnet (-S) so it cannot accept position sensors. For load holding, note that a plain cylinder drifts on air loss; use an external rod lock or pilot check valve.
Airtac SI100 Standard Cylinder SI100BX165 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX165 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX165 |
| 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 SAI100BX165 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 SAI100BX165 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 SI100BX165
| 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 SI100BX165 Is Used
Heavy Material Handling
Ideal for moving substantial pallets or workpieces, utilizing the 3927 N push force at 0.5 MPa to shift heavy loads securely along production lines.
Stainless Rod Pressing
The SUS304 stainless piston rod (-B) suits light pressing or clamping in washdown environments where corrosion resistance is mandatory.
Replacing the Airtac SI100 Standard Cylinder SI100BX165 with the SAI100BX165
To replace the discontinued SI100BX165, order the SAI100BX165. Confirm the ISO 15552 mounting interface, the 165mm stroke, the G1/2 port, and your specific mounting accessory (LB, FA, TC, etc.). Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, specify an SAI with an S suffix. Sizing both ways: this 100mm bore gives 3927 N push at 0.5 MPa. If you need less force, an 80mm bore provides 2513 N; if you need more, a 125mm bore yields 6136 N. Since the 165mm stroke is under 300mm, severe rod-bending side loads are less critical, but always guide the load. For applications requiring locked positions without live air, explore the SAIL or BSAI lock variants instead of relying on the air cushion, which only decelerates.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX165
- ✓ 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 SI100BX165 FAQ
Yes, the AirTAC SI100BX165 is discontinued. The direct replacement is the SAI100BX165. It shares the same ISO 15552 mounting interface, 100mm bore, 165mm stroke, output force, G1/2 port, and mounting accessories, fitting directly into existing fixtures.
This 100mm bore cylinder uses a G1/2 air port. The thrust ratings 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX165
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