This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX115S, 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 SI100BX115S
The AirTAC Airtac SI100 Standard Cylinder SI100BX115S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 115mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX115S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke115 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX115S
- 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 SI100BX115S
The AirTAC SI100BX115S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 115 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX115S, matching the interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This -B variant uses a SUS304 stainless rod for corrosion resistance, and the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100BX115S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX115S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX115S |
| Bore size | Ø100 mm |
| Stroke | 115 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 SAI100BX115S 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 SAI100BX115S 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 SI100BX115S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×115 | 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 SI100BX115S Is Used
Heavy Press Clamping
Ideal for exerting high clamping force on large fabricated metal components within machining fixtures.
Pallet Lift Stations
Provides the robust vertical thrust needed for lifting loaded pallets, utilizing the 100 mm bore capacity.
Bulk Material Diversion
Actuates heavy-duty diverter arms on conveyor lines to route dense packaged goods efficiently.
Replacing the Airtac SI100 Standard Cylinder SI100BX115S with the SAI100BX115S
To replace the SI100BX115S, order the SAI100BX115S. Confirm the ISO 15552 mounting interface, 115 mm stroke, G1/2 port, and your specific mounting accessory. The SAI is a direct. If sizing up or down, neighbouring bores (80 mm or 125 mm) change the 0.5 MPa push force (2513 N or 6136 N). A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX115S
- ✓ 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 SI100BX115S FAQ
Yes, the SI100BX115S is discontinued. The direct replacement is the SAI100BX115S. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 115 mm stroke, G1/2 port, and output force.
This 100 mm bore cylinder has a G1/2 port. It delivers 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 max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX115S replacement — usually within 7-8 hours.