This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX750, 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 SI100AX750
The AirTAC Airtac SI100 Standard Cylinder SI100AX750 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 750mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX750, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX750
- 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 SI100AX750
The AirTAC SI100AX750 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 750mm stroke. It features a SUS420J2 stainless piston rod and delivers 3927 N push force at 0.5 MPa. The direct replacement is the SAI100AX750, retaining the same G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet, so it cannot take a sensor; legacy CS1-B/DS1-B switches require an -S model.
Airtac SI100 Standard Cylinder SI100AX750 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX750 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX750 |
| Bore size | Ø100 mm |
| Stroke | 750 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 SAI100AX750 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 SAI100AX750 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 SI100AX750
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×750 | 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 SI100AX750 Is Used
Heavy Material Transfer
Drives robust pallet stops and heavy-gauge workpiece diverters on high-throughput conveyor lines using its 3927 N push force.
Large Press Feed
Actuates multi-stage feeding mechanisms in metal forming presses, benefiting from the 750mm stroke and SUS420J2 rod.
Automated Storage Retrieval
Handles extended reach positioning of 200 kg vertical loads in automated warehousing, guided externally to prevent rod bending.
Replacing the Airtac SI100 Standard Cylinder SI100AX750 with the SAI100AX750
To replace the SI100AX750, order the SAI100AX750. Verify the ISO 15552 mounting interface, 750mm stroke, G1/2 port, and -A SUS420J2 rod. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while stepping up to 125mm provides 6136 N. Note this 750mm stroke requires external guides to prevent rod bending under side loads. Because this SKU has no magnet (-S), it cannot accept position sensors. For load holding on air loss, the cushion only decelerates; use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX750
- ✓ 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 SI100AX750 FAQ
Yes, the SI100AX750 is discontinued. The direct replacement is the SAI100AX750. It is dimensionally interchangeable per ISO 15552, keeping the same 100mm bore, 750mm stroke, G1/2 port, and mounting fixtures.
It uses a G1/2 port. Force output is 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX750
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX750 replacement — usually within 7-8 hours.