This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX320SH, 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 SI100BX320SH
The AirTAC Airtac SI100 Standard Cylinder SI100BX320SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 320mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX320SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke320 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX320SH
- 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 SI100BX320SH
The AirTAC SI100BX320SH is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 320 mm stroke. Configured with a SUS304 stainless rod (-B), high-temp Viton seals (-H) and a piston magnet (-S), it delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX320SH, sharing the same interface, force and mounting.
The SAI upgrade features 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 in the SI line.
Airtac SI100 Standard Cylinder SI100BX320SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX320SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX320SH |
| Bore size | Ø100 mm |
| Stroke | 320 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 SAI100BX320SH 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 SAI100BX320SH 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 SI100BX320SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×320 | 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 SI100BX320SH Is Used
High-Force Clamping
Secures heavy steel weldments during machining, utilising the 3927 N push force at 0.5 MPa with the durable SUS304 rod resisting coolant corrosion.
Pallet Diversion
Actuates heavy-duty routing gates on high-capacity assembly lines, where the 320 mm stroke provides full travel and adjustable cushions absorb kinetic energy.
Hot-Environment Ejection
Pushes moulded components away from heated presses, relying on the Viton H high-temperature seals to maintain integrity up to 150 C.
Replacing the Airtac SI100 Standard Cylinder SI100BX320SH with the SAI100BX320SH
To replace the SI100BX320SH, order the SAI100BX320SH to retain the exact ISO 15552 mounting dimensions, 320 mm stroke, G1/2 port and M20x1.5 rod thread. Keep the -B SUS304 rod, -S magnet and -H Viton seals (0-150 C) to match your environment. The legacy CS1-B/DS1-B sensors transition to current AirTAC switches on the SAI. If sizing alternatives, neighbouring bores offer different footprints, but this 100 mm bore yields 3927 N at 0.5 MPa and 801 kgf max. Note that a plain cylinder drifts without live air; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Finally, at 320 mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX320SH
- ✓ 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 SI100BX320SH FAQ
Yes, the SI100BX320SH is discontinued. The direct replacement is the SAI100BX320SH. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 320 mm stroke, G1/2 port, output force and mounting interface.
It features a G1/2 port and M20x1.5 rod thread. Force output is 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 of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX320SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX320SH replacement — usually within 7-8 hours.