This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X315, 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 SI100X315
The AirTAC Airtac SI100 Standard Cylinder SI100X315 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 315mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X315, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke315 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X315
- 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 SI100X315
The AirTAC SI100X315 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 315mm stroke. It delivers a push force of 3927 N at 0.5 MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X315, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, and output force.
The SAI upgrade features a modernized piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding, the new SAI family includes SAIL and BSAI lock variants the SI lacked. Note this specific SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X315 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X315 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X315 |
| Bore size | Ø100 mm |
| Stroke | 315 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 SAI100X315 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 SAI100X315 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 SI100X315
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×315 | 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 SI100X315 Is Used
Heavy-Duty Pressing
Ideal for applying consistent 3927 N clamping force on heavy metal stamping or riveting fixtures.
Pallet Diversion
Drives robust routing arms on high-mass packaging lines, utilizing the 315mm stroke to clear pallets.
Vertical Lifting
Hoists 200 kg loads in material handling systems, provided external guides prevent side-load damage.
Replacing the Airtac SI100 Standard Cylinder SI100X315 with the SAI100X315
To replace the SI100X315, order the SAI100X315. Verify your ISO 15552 mounting fixture (LB, FA, TC, etc.), the 315mm stroke, and the G1/2 port. Because this SKU has no -S magnet, it cannot support position sensing; if switches are needed, select an SAI100X315S and use current AirTAC switches. For sizing, the 100mm bore yields 3927 N push at 0.5 MPa; dropping to an 80mm bore gives 2513 N, while 125mm provides 6136 N. A plain cylinder drifts on air loss, so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. Finally, at 315mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X315
- ✓ 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 SI100X315 FAQ
Yes, the AirTAC SI100X315 is discontinued. The direct replacement is the SAI100X315. It shares the identical ISO 15552 mounting interface, 100mm bore, 315mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
This double-acting cylinder features a G1/2 port and 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 SAI100X315
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X315 replacement — usually within 7-8 hours.