This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX800S, 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 SI100BX800S
The AirTAC Airtac SI100 Standard Cylinder SI100BX800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX800S
- 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 SI100BX800S
The AirTAC SI100BX800S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 800mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX800S, featuring a SUS304 stainless rod for corrosion resistance and a built-in magnet for CS1-B/DS1-B sensors.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100BX800S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX800S |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAI100BX800S 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 SAI100BX800S 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 SI100BX800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SI100BX800S Is Used
Heavy Material Transfer
Drives large pallets or heavy assemblies over 800mm cycles where the 3927 N push force at 0.5 MPa easily overcomes friction and payload inertia.
Large Press Ejection
Ejects heavy formed parts from machinery, relying on the SUS304 stainless rod for corrosion resistance in humid or washdown environments.
Replacing the Airtac SI100 Standard Cylinder SI100BX800S with the SAI100BX800S
To replace the SI100BX800S, order the SAI100BX800S to match the 100mm bore, 800mm stroke, G1/2 port, and ISO 15552 mounting interface. Retain your existing PT/G/NPT thread and mounting accessories. The -S magnet works with legacy CS1-B/DS1-B switches, though SAI uses current AirTAC sensors. For sizing, the 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. At 800mm, use external guides to prevent rod bending and side loads. For load holding without live air, use an external rod lock or pilot check valve, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX800S
- ✓ 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 SI100BX800S FAQ
Yes, the SI100BX800S is discontinued. The direct replacement is the SAI100BX800S. It shares the same ISO 15552 mounting interface, 100mm bore, 800mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
This 100mm bore cylinder features 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 SAI100BX800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX800S replacement — usually within 7-8 hours.