This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX300SH, 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 SI100BX300SH
The AirTAC Airtac SI100 Standard Cylinder SI100BX300SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX300SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX300SH
- 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 SI100BX300SH
The AirTAC SI100BX300SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 300mm stroke. Featuring a SUS304 stainless piston rod and Viton H high-temperature seals (0 to 150 C), it delivers 3927 N push and 3681 N pull at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX300SH, retaining identical mounting, force, and stroke specifications.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy line. Your -S magnet works with CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors.
Airtac SI100 Standard Cylinder SI100BX300SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX300SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX300SH |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAI100BX300SH 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 SAI100BX300SH 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 SI100BX300SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SI100BX300SH Is Used
High-Force Pressing
Drives heavy stamping or forming stations requiring 3927 N of push force at 0.5 MPa, using the 300mm stroke to clear bulky tooling.
Pallet Diversion
Actuates large-scale pallet stops or routing gates on high-throughput lines, benefiting from the SUS304 rod in washdown zones.
Replacing the Airtac SI100 Standard Cylinder SI100BX300SH with the SAI100BX300SH
To replace the SI100BX300SH, order the SAI100BX300SH. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the 100mm bore, 300mm stroke, G1/2 port, and M20x1.5 rod thread. Confirm your mounting accessory (LB, FA, TC, etc.) and the -S magnet. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. Note that at 300mm stroke, you should use an external guide to prevent rod-bending and side-load wear. A plain cylinder does not hold load without live air; the cushion only decelerates. For load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX300SH
- ✓ 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 SI100BX300SH FAQ
Yes, the SI100BX300SH is discontinued. The direct replacement is the SAI100BX300SH. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 300mm stroke, force, G1/2 port, and mounting fixtures.
The G1/2 port feeds a 25mm rod delivering 3927 N push and 3681 N pull at 0.5 MPa. At 0.7 MPa push is 5497 N, reaching 7068 N at 0.9 MPa. The theoretical maximum is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX300SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX300SH replacement — usually within 7-8 hours.