This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX90, 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 SI100BX90
The AirTAC Airtac SI100 Standard Cylinder SI100BX90 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 90mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX90, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX90
- 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 SI100BX90
The AirTAC SI100BX90 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 90 mm stroke. It delivers a push force of 3927 N at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100BX90, matching the bore, stroke, force, port and ISO 15552 mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This B-rod variant uses a SUS304 stainless piston rod for corrosion resistance. Since this SKU lacks a magnet, it cannot take a sensor.
Airtac SI100 Standard Cylinder SI100BX90 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX90 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX90 |
| Bore size | Ø100 mm |
| Stroke | 90 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 SAI100BX90 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 SAI100BX90 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 SI100BX90
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×90 | 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 SI100BX90 Is Used
Heavy-Duty Pressing
Drives large stamping or forming dies requiring substantial thrust, utilizing the 3927 N push force at 0.5 MPa.
Logistics Diverters
Actuates heavy-duty routing gates or pushers on high-throughput conveyor lines with a robust 90 mm stroke.
Replacing the Airtac SI100 Standard Cylinder SI100BX90 with the SAI100BX90
To replace the SI100BX90, order the SAI100BX90. Confirm the ISO 15552 mounting interface, 100 mm bore, 90 mm stroke, G1/2 port (PT/G/NPT) and your specific mounting accessory. Because this SKU has no -S magnet, it cannot accept a CS1-B/DS1-B sensor; if sensing is required, switch to a magnet-equipped SAI. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighbouring 80 mm bore provides 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so 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 → SAI100BX90
- ✓ 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 SI100BX90 FAQ
Yes, the AirTAC SI100BX90 is discontinued. The direct replacement is the SAI100BX90. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 90 mm stroke, output force, G1/2 port and mounting fixtures.
The G1/2 port feeds a 25 mm piston rod. At 0.5 MPa it pushes 3927 N and pulls 3681 N. Push force is 5497 N at 0.7 MPa 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 SAI100BX90
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX90 replacement — usually within 7-8 hours.