This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX500, 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 SI100BX500
The AirTAC Airtac SI100 Standard Cylinder SI100BX500 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX500, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX500
- 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 SI100BX500
The AirTAC SI100BX500 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 500mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is directly replaced by the SAI100BX500 direct.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU uses a SUS304 stainless rod (-B) but lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI100 Standard Cylinder SI100BX500 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX500 |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAI100BX500 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 SAI100BX500 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 SI100BX500
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SI100BX500 Is Used
Heavy Press Clamping
Applies 3927N at 0.5MPa to secure large steel fabrications during machining or welding operations.
Pallet Diverting
Extends 500mm to push heavy pallets across transfer lines, requiring external guides to absorb side impacts.
Replacing the Airtac SI100 Standard Cylinder SI100BX500 with the SAI100BX500
To replace the SI100BX500, order the SAI100BX500 to match the ISO 15552 mounting interface, 100mm bore, 500mm stroke, and G1/2 port. Confirm your mounting accessory (LB, FA, TC) and thread type (PT/G/NPT). Because this is a no-S SKU, it cannot accept a magnetic switch; order a -S variant if sensing is needed. The 500mm stroke requires external guides to prevent rod bending under side loads. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant, as cushions only decelerate. Neighbouring bores: 80mm yields 2513N push, 125mm yields 6136N at 0.5MPa.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX500
- ✓ 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 SI100BX500 FAQ
Yes, the SI100BX500 is discontinued. The direct replacement is the SAI100BX500, sharing the same ISO 15552 mounting interface, 100mm bore, 500mm stroke, output force, G1/2 port, and SUS304 rod.
It features a G1/2 port and delivers 3927N push / 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX500
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX500 replacement — usually within 7-8 hours.