This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX800, 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 SI100BX800
The AirTAC Airtac SI100 Standard Cylinder SI100BX800 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 SAI100BX800, 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 → SAI100BX800
- 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 SI100BX800
The AirTAC SI100BX800 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 3927 N push force at 0.5 MPa. It features a SUS304 stainless piston rod (-B option) for corrosion resistance and uses a G1/2 air port. Because this SKU lacks a magnet, it cannot accept position sensors.
The direct replacement is the SAI100BX800, retaining the exact bore, stroke, force, and ISO 15552 mounting interface. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
Airtac SI100 Standard Cylinder SI100BX800 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX800 |
| 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 SAI100BX800 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 SAI100BX800 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 SI100BX800
| 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 SI100BX800 Is Used
Large Press Ejection
Provides the robust 3927 N push force at 0.5 MPa needed to eject heavy formed parts from large stamping presses.
Pallet Discharge
Acts as a main discharge cylinder on automated pallet lines, moving heavy unit loads with a corrosion-resistant SUS304 rod.
Replacing the Airtac SI100 Standard Cylinder SI100BX800 with the SAI100BX800
To replace this SI100BX800, order the SAI100BX800 and verify the ISO 15552 mounting interface, G1/2 port, and 800 mm stroke. This non-magnet SKU cannot take a switch; if sensing is needed, select an SAI model with the -S suffix to use current AirTAC switches. Neighbouring bores are 80mm (2513N push @0.5) and 125mm (6136N push @0.5). Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or the SAIL/BSAI lock variant for load holding. At 800 mm stroke, prevent rod bending by guiding the load externally.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX800
- ✓ 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 SI100BX800 FAQ
Yes, the SI100BX800 is discontinued. The direct replacement is the AirTAC SAI100BX800. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 800mm stroke, G1/2 port, and mounting fixtures, but features an upgraded two Y-shaped element piston seal.
At 0.5 MPa it pushes 3927 N and pulls 3681 N. At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical max force is 801 kgf at 1.0 MPa. It operates at 30-800 mm/s, uses a G1/2 port, and the rod-end thread is M20x1.5.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX800
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX800 replacement — usually within 7-8 hours.