This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX500, 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 SI100AX500
The AirTAC Airtac SI100 Standard Cylinder SI100AX500 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 SAI100AX500, 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 → SAI100AX500
- 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 SI100AX500
The AirTAC SI100AX500 is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore and 500mm stroke. It delivers a push force of 3927 N at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100AX500, matching the interface, bore, stroke, force, and mounting. This SKU uses a SUS420J2 stainless steel rod (A option) and lacks a magnet, meaning it cannot accept a position sensor.
The SAI100AX500 upgrade features an improved piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, consider the SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX500 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX500 |
| 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 SAI100AX500 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 SAI100AX500 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 SI100AX500
| 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 SI100AX500 Is Used
Heavy Pressing
Drives substantial forming and stamping tasks, utilizing the 3927 N push force at 0.5 MPa to seat heavy components reliably.
Pallet Handling
Moves heavy loaded pallets over a 500mm travel distance, requiring external guides to prevent rod bending during transit.
Replacing the Airtac SI100 Standard Cylinder SI100AX500 with the SAI100AX500
To replace the discontinued SI100AX500, order the SAI100AX500. Confirm the ISO 15552 mounting interface, 100mm bore, 500mm stroke, G1/2 port (PT/G/NPT thread), and your specific mounting accessory. Because this is a 500mm stroke, external guides are recommended to prevent rod bending and excessive side loads. Sizing both ways: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while this 100mm bore reaches 5497 N at 0.7 MPa. This SKU has no magnet and cannot take a switch. If you need load holding on air loss, use an external pilot check valve or explore the SAIL lock and SAIF valve variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX500
- ✓ 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 SI100AX500 FAQ
Yes, the AirTAC SI100AX500 is discontinued. The direct replacement is the SAI100AX500. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 500mm stroke, force, G1/2 port, and mounting interface.
This double-acting cylinder features a G1/2 port and a 25mm rod. 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 the theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX500
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX500 replacement — usually within 7-8 hours.