This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX300H, 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 SI100BX300H
The AirTAC Airtac SI100 Standard Cylinder SI100BX300H 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 SAI100BX300H, 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 → SAI100BX300H
- 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 SI100BX300H
The AirTAC SI100BX300H is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 300 mm stroke. It features a SUS304 stainless steel rod, a high-temperature Viton H seal rated for 0 to 150 C, and a G1/2 port. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100BX300H. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note that this specific SKU lacks a magnet and cannot support CS1-B/DS1-B sensors. Additionally, the SAI family adds SAIL, SAIF, and BSAI lock variants absent from the legacy SI line.
Airtac SI100 Standard Cylinder SI100BX300H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX300H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX300H |
| 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 SAI100BX300H 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 SAI100BX300H 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 SI100BX300H
| 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 SI100BX300H Is Used
High-Temperature Pressing
Applies 3927 N of thrust at 0.5 MPa for assembly presses in hot environments up to 150 C, leveraging the Viton H seal and SUS304 rod.
Heavy Material Lift
Moves 200 kg vertical loads using the 100 mm bore, requiring external guides to prevent rod bending over the 300 mm stroke.
Pallet Diversion
Actuates heavy diverters on packaging lines, taking advantage of the adjustable 36 mm air cushions at both ends to decelerate loads smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100BX300H with the SAI100BX300H
To replace the discontinued SI100BX300H, order the SAI100BX300H. Verify the ISO 15552 mounting interface, the 100 mm bore, the 300 mm stroke, the G1/2 port, and your specific mounting accessory. Because this is a 300 mm stroke, prevent rod bending by guiding the load externally to avoid side-load stress. The -B rod provides SUS304 stainless steel for corrosion resistance, and the -H seal offers Viton FKM for high-temperature environments up to 150 C. Since this SKU has no magnet (-S), it cannot accept position sensors; order a magnet-equipped SAI if sensing is required. For sizing, a neighbouring 80 mm bore yields 2513 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. Remember that a standard cylinder drifts without live air; for load holding on air loss, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX300H
- ✓ 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 SI100BX300H FAQ
Yes, the SI100BX300H is discontinued. The direct replacement is the SAI100BX300H. It is dimensionally interchangeable per ISO 15552, maintaining the same 100 mm bore, 300 mm stroke, G1/2 port, and mounting interface, so it fits existing fixtures directly.
This double-acting cylinder uses a G1/2 port. It delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX300H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX300H replacement — usually within 7-8 hours.