This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X300CB, 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 SI100X300CB
The AirTAC Airtac SI100 Standard Cylinder SI100X300CB 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 SAI100X300CB, 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 → SAI100X300CB
- 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 SI100X300CB
The AirTAC SI100X300CB is a discontinued double-acting ISO 15552 profile cylinder. It delivers 3927 N push at 0.5 MPa through a 100 mm bore, 300 mm stroke, and G1/2 port. AirTAC replaced it with the SAI100X300CB. This direct successor shares the exact ISO 15552 mounting interface, CB clevis mount, force, and stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. Note this SKU lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI100 Standard Cylinder SI100X300CB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X300CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X300CB |
| 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 SAI100X300CB 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 SAI100X300CB 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 SI100X300CB
| 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 SI100X300CB Is Used
Heavy Press Staging
Feeds large metal blanks into a forming press using the 3927 N push force, with the 300 mm stroke clearing heavy tooling during retraction.
Pallet Pusher Assembly
Indexes loaded pallets along a conveyor, utilizing the CB clevis mount to accommodate angular misalignment during heavy lateral shifting.
Replacing the Airtac SI100 Standard Cylinder SI100X300CB with the SAI100X300CB
To replace the SI100X300CB, order the SAI100X300CB. Verify the ISO 15552 CB clevis mounting, 300 mm stroke, G1/2 port (PT/G/NPT thread), and M20x1.5 rod. Since this SKU lacks the -S magnet, it cannot accept position sensors; order a magnet-equipped SAI if switches are needed. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa (5497 N at 0.7 MPa), while the neighbouring 80 mm bore offers 2513 N. For the 300 mm stroke, use external guides to prevent rod-bending side loads. The air cushion only decelerates; it does not hold load. For load-holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X300CB
- ✓ 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 SI100X300CB FAQ
Yes, the SI100X300CB is discontinued. The direct replacement is the SAI100X300CB. It is dimensionally interchangeable per ISO 15552, retaining the same CB clevis mount, 100 mm bore, 300 mm stroke, and G1/2 port.
The G1/2 port bore delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X300CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X300CB replacement — usually within 7-8 hours.