This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX15, 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 SI100BX15
The AirTAC Airtac SI100 Standard Cylinder SI100BX15 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 15mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX15, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX15
- 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 SI100BX15
The AirTAC SI100BX15 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 15mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, utilizing a G1/2 port and a SUS304 stainless steel rod. AirTAC replaced this legacy unit with the SAI100BX15, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI100BX15 features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this SKU lacks a magnet and cannot accept a sensor; the legacy SI family used CS1-B/DS1-B switches, while SAIL lock and BSAI clamp-lock variants are available for load holding.
Airtac SI100 Standard Cylinder SI100BX15 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX15 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX15 |
| Bore size | Ø100 mm |
| Stroke | 15 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 SAI100BX15 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 SAI100BX15 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 SI100BX15
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×15 | 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 SI100BX15 Is Used
Short-Stroke Clamping
Ideal for high-force 3927 N clamping of heavy steel plates in machining fixtures using the 15mm stroke.
Press Fit Operations
Delivers reliable 100mm bore thrust for seating bearings or pins in automated assembly lines.
Stainless Rod Ejector
The SUS304 rod option provides corrosion resistance for ejecting parts in humid or washdown environments.
Replacing the Airtac SI100 Standard Cylinder SI100BX15 with the SAI100BX15
To replace the discontinued SI100BX15, order the SAI100BX15. Confirm the ISO 15552 mounting interface, the 100mm bore, the 15mm stroke, and the G1/2 port (PT/G/NPT). This unit uses a SUS304 stainless rod and has no magnet, meaning it cannot support position sensing. If you need to adjust force, the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore provides 6136 N. Because this plain cylinder drifts on air loss, use an external pilot check valve or the SAIL/BSAI lock variant for load holding. With a 15mm stroke, side-load risks are minimal, but ensure rigid mounting to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX15
- ✓ 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 SI100BX15 FAQ
Yes, the AirTAC SI100BX15 is discontinued. The direct replacement is the SAI100BX15. It shares the identical ISO 15552 mounting interface, 100mm bore, 15mm stroke, force, and G1/2 port, fitting existing fixtures perfectly.
It features a G1/2 port and generates 3927 N push and 3681 N pull at 0.5 MPa. At 0.7 MPa push is 5497 N, and 7068 N at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX15
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX15 replacement — usually within 7-8 hours.