This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX5, 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 SI100BX5
The AirTAC Airtac SI100 Standard Cylinder SI100BX5 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 5mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX5, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX5
- 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 SI100BX5
The AirTAC SI100BX5 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 5mm stroke. Delivering 3927 N push and 3681 N pull at 0.5 MPa, it features a G1/2 port, M20x1.5 rod thread, and 36mm adjustable air cushions. The direct replacement is the SAI100BX5, matching the exact ISO 15552 mounting interface, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Because this specific SKU lacks the -S magnet suffix, it cannot accept a CS1-B or DS1-B sensor. The default carbon steel rod can be swapped for SUS304 stainless (B option), and a Viton H seal raises operating temperature to 0-150 C.
Airtac SI100 Standard Cylinder SI100BX5 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX5 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX5 |
| Bore size | Ø100 mm |
| Stroke | 5 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 SAI100BX5 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 SAI100BX5 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 SI100BX5
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×5 | 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 SI100BX5 Is Used
Short-Stroke Clamping
Ideal for high-force 3927 N clamping of heavy castings in CNC machining centers where only 5mm of travel is needed to secure the part.
Riveting & Staking
Provides the rigid 100mm bore impact force required for riveting or staking metal assemblies without excessive stroke length.
Heavy Duty Ejection
Suits short 5mm ejection of dense manufactured parts from press dies, utilizing the 3681 N pull force for safe retraction.
Replacing the Airtac SI100 Standard Cylinder SI100BX5 with the SAI100BX5
To replace the SI100BX5, order the SAI100BX5 and verify the ISO 15552 mounting interface, G1/2 port (PT/G/NPT), and 5mm stroke. This non-magnetic SKU cannot take a switch; if sensing is needed, select an SAI100X5S. For load holding, note that a plain cylinder drifts on air loss as the cushion only decelerates—use an external pilot check valve or the SAIL/BSAI lock variant. If sizing up or down, adjacent bores (80mm or 125mm) shift the 0.5 MPa push force to 2513 N or 6136 N respectively.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX5
- ✓ 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 SI100BX5 FAQ
Yes, the AirTAC SI100BX5 is discontinued. The direct replacement is the SAI100BX5. It maintains the exact ISO 15552 mounting interface, 100mm bore, 5mm stroke, force, and G1/2 port, fitting existing fixtures perfectly.
The G1/2 port bore delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa. At 0.7 MPa push is 5497 N, and 7068 N at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX5
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX5 replacement — usually within 7-8 hours.