This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X370S, 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 SI100X370S
The AirTAC Airtac SI100 Standard Cylinder SI100X370S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 370mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X370S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke370 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X370S
- 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 SI100X370S
The AirTAC SI100X370S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 370mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X370S. This direct upgrade matches the original ISO 15552 mounting interface, bore, stroke, force, and accessories.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S suffix indicates a piston magnet compatible with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X370S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X370S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X370S |
| Bore size | Ø100 mm |
| Stroke | 370 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 SAI100X370S 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 SAI100X370S 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 SI100X370S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×370 | 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 SI100X370S Is Used
Heavy Press Clamping
Secures large metal workpieces in machining centers, utilizing the 3927 N push force at 0.5 MPa to hold components firmly during high-torque milling operations.
Pallet Diversion
Actuates heavy-duty routing gates on automated assembly lines. The 370mm stroke provides the reach needed to redirect wide pallet loads smoothly.
Vertical Lift Gates
Raises and lowers substantial material handling barriers.
Replacing the Airtac SI100 Standard Cylinder SI100X370S with the SAI100X370S
To replace the SI100X370S, order the SAI100X370S. Confirm the ISO 15552 mounting interface, 100mm bore, 370mm stroke, G1/2 port (PT/G/NPT thread options), and mounting accessory (LB, FA, TC, etc.). The -S magnet suffix is retained. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. At 370mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, specify the SAIL lock variant, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X370S
- ✓ 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 SI100X370S FAQ
Yes, the AirTAC SI100X370S is discontinued. The direct replacement is the SAI100X370S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 370mm stroke, 3927 N force, G1/2 port, and mounting interface.
The 100mm bore features a G1/2 port. Force ratings are: 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 maximum of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X370S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X370S replacement — usually within 7-8 hours.