This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX115, 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 SI100BX115
The AirTAC Airtac SI100 Standard Cylinder SI100BX115 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 SAI100BX115, 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 → SAI100BX115
- 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 SI100BX115
The AirTAC SI100BX115 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 115 mm stroke. It features a SUS304 stainless steel piston rod (the -B option) for corrosion resistance, a G1/2 air port, and delivers 3927 N of push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI100BX115, a direct upgrade retaining the exact same ISO 15552 mounting interface, bore, stroke, and output force.
The SAI replacement introduces an upgraded piston seal utilizing two Y-shaped one-way elements for extended life and lower start-up pressure. This SKU lacks a magnet and cannot accept a sensor switch. For load holding, note that standard air cushions only decelerate the piston; an external pilot check valve or the SAIL/BSAI lock variant is required to hold a load.
Airtac SI100 Standard Cylinder SI100BX115 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX115 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX115 |
| 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 SAI100BX115 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 SAI100BX115 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 SI100BX115
| 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 SI100BX115 Is Used
Heavy Stamping Press
Drives large platens and stamping dies requiring high thrust, using the 3927 N push force at 0.5 MPa to form thick metal components reliably.
Wood Processing Clamps
Secures heavy timber beams during cutting and routing operations, utilizing the adjustable air cushions to decelerate the large moving mass smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100BX115 with the SAI100BX115
To replace the discontinued SI100BX115, order the SAI100BX115. Confirm the ISO 15552 mounting interface, the 115 mm stroke, and the G1/2 port match your existing fixture. Because this is a no-magnet SKU, it cannot support position sensing; if switches are needed, an -S suffix SAI model with current AirTAC sensors is required. Sizing both ways: this 100 mm bore yields 3927 N push at 0.5 MPa, while the neighboring 80 mm bore provides 2513 N. For applications needing integrated load holding on air loss, specify the SAIL air-released lock or BSAI clamp-lock variant, as standard cushions only decelerate. The SUS304 rod option (-B) is retained for corrosive environments.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX115
- ✓ 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 SI100BX115 FAQ
Yes, the AirTAC SI100BX115 is discontinued. The direct replacement is the SAI100BX115. It shares the identical ISO 15552 mounting interface, 100 mm bore, 115 mm stroke, output force, G1/2 port, and SUS304 stainless rod, fitting directly into existing machinery.
This double-acting cylinder has 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 SAI100BX115
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX115 replacement — usually within 7-8 hours.