This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX105S, 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 SI100BX105S
The AirTAC Airtac SI100 Standard Cylinder SI100BX105S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 105mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX105S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX105S
- 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 SI100BX105S
The AirTAC SI100BX105S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 105 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX105S, matching the interface, bore, stroke, force, and mounting exactly.
The SAI upgrade features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This stainless SUS304 rod variant (-B) resists corrosion, while the -S magnet supports legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100BX105S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX105S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX105S |
| Bore size | Ø100 mm |
| Stroke | 105 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 SAI100BX105S 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 SAI100BX105S 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 SI100BX105S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×105 | 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 SI100BX105S Is Used
Heavy-Duty Pressing
Drives large stamping and pressing fixtures requiring up to 3927 N of thrust at 0.5 MPa, utilizing the 105 mm stroke for compact, high-force actuation.
Pallet Handling
Indexes heavy loaded pallets on conveyor lines, where the 100 mm bore provides the necessary push force and the ISO 15552 mounting handles the structural load.
Replacing the Airtac SI100 Standard Cylinder SI100BX105S with the SAI100BX105S
To replace the SI100BX105S, order the SAI100BX105S. Confirm the ISO 15552 mounting interface, G1/2 port, and your specific mounting accessory (LB, FA, TC, etc.). The -S magnet and -B SUS304 rod must be specified on the new order. If you need less force, a 80 mm bore yields 2513 N push at 0.5 MPa; if you need more, a 125 mm bore yields 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant adds a built-in 4M valve for bores up to 100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX105S
- ✓ 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 SI100BX105S FAQ
Yes, the AirTAC SI100BX105S is discontinued. The direct replacement is the SAI100BX105S. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 105 mm stroke, force, G1/2 port, and mounting interface.
The 100 mm bore features a G1/2 port. At 0.5 MPa it provides 3927 N push and 3681 N pull force. At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX105S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX105S replacement — usually within 7-8 hours.