This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX105, 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 SI100BX105
The AirTAC Airtac SI100 Standard Cylinder SI100BX105 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 SAI100BX105, 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 → SAI100BX105
- 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 SI100BX105
The AirTAC SI100BX105 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 SAI100BX105, matching the interface, stroke, force, and mounting. This specific SKU features a SUS304 stainless steel rod for corrosion resistance but lacks a magnet, so it cannot accept position switches.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. For load holding, note that a standard cylinder drifts without air; use an external rod lock or SAIL/BSAI variant.
Airtac SI100 Standard Cylinder SI100BX105 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX105 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX105 |
| 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 SAI100BX105 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 SAI100BX105 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 SI100BX105
| 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 SI100BX105 Is Used
Heavy-Duty Pressing
Drives high-force stamping and seating operations in automated machinery, utilizing the 3927 N thrust at 0.5 MPa to securely set heavy components.
Pallet Lift Gates
Actuates large material handling gates and lifts where the SUS304 stainless rod provides necessary corrosion resistance against environmental moisture.
Large Clamp Fixtures
Secures bulky workpieces in machining cells, taking advantage of the 100 mm bore's robust clamping force and stable ISO 15552 profile barrel.
Replacing the Airtac SI100 Standard Cylinder SI100BX105 with the SAI100BX105
To replace the discontinued SI100BX105, order the SAI100BX105. Verify the ISO 15552 mounting interface, 105 mm stroke, G1/2 port, and accessory type. Because this SKU has no -S suffix, it cannot support magnetic sensing; if switches are needed, select an SAI equivalent with a magnet and current AirTAC sensors. For sizing, the 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore yields 6136 N. At 0.7 MPa this 100 mm bore pushes 5497 N. Since this is a 105 mm stroke, side-load risks are minimal, but always guide the load to prevent rod bending. For applications requiring load holding on air loss, select the SAIL or BSAI lock variant, or use a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX105
- ✓ 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 SI100BX105 FAQ
Yes, the AirTAC SI100BX105 is discontinued. The direct replacement is the SAI100BX105. It is dimensionally interchangeable per ISO 15552, offering the same 100 mm bore, 105 mm stroke, G1/2 port, and mounting interface.
This double-acting cylinder features a G1/2 air port. It delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa the push force is 5497 N, and the theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX105
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX105 replacement — usually within 7-8 hours.