This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1150S, 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 SI100X1150S
The AirTAC SI100 Standard Cylinder SI100X1150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke1150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X1150S
- 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 SI100X1150S
The AirTAC SI100X1150S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 3927 N of push force at 0.5 MPa through a 100 mm bore, features a G1/2 port, and includes a piston magnet for position sensing. AirTAC replaced this legacy unit with the SAI100X1150S, a direct upgrade sharing the exact ISO 15552 mounting interface, stroke, and output force.
The SAI replacement incorporates an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life. The SAI family also introduces lock and valve variants absent in the SI line, such as the SAIL, SAIF, and BSAI models.
Airtac SI100 Standard Cylinder SI100X1150S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X1150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1150S |
| Bore size | Ø100 mm |
| Stroke | 1150 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 SAI100X1150S 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 SAI100X1150S 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 SI100X1150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1150 | 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 SI100X1150S Is Used
Long-Stroke Material Transfer
Drives heavy pallets across 1150 mm staging zones where the 3927 N push force at 0.5 MPa easily overcomes rolling friction and guide resistance.
Vertical Lift Gates
Raises 200 kg mezzanine access doors using the full 100 mm bore, requiring external guides to manage the moment loads on the extended 1150 mm rod.
Heavy Press Ejection
Ejects dense machined components from hydraulic presses, utilizing the 7068 N thrust available at 0.9 MPa to clear the forming area reliably.
Replacing the Airtac SI100 Standard Cylinder SI100X1150S with the SAI100X1150S
To replace the discontinued SI100X1150S, order the SAI100X1150S direct equivalent, verifying your ISO 15552 mounting hardware, G1/2 port thread, and M20x1.5 rod-end connection. This 100 mm bore generates 3927 N push at 0.5 MPa; if undersizing, an 80 mm bore yields 2513 N, while a 125 mm bore provides 6136 N. Because the stroke is 1150 mm, you must use external guides to prevent rod bending and side-load damage. A standard cylinder drifts without live air, so for load holding specify the SAIL lock variant or an external pilot check valve. The built-in magnet supports legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X1150S
- ✓ 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 SI100X1150S FAQ
Yes, the SI100X1150S is discontinued. The direct replacement is the AirTAC SAI100X1150S. It shares the identical ISO 15552 mounting interface, 100 mm bore, 1150 mm stroke, output force, and G1/2 port, fitting directly into your existing fixtures.
This double-acting cylinder operates at 0.15-1.0 MPa with a G1/2 port. It 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 maximum theoretical force of 801 kgf at 1.0 MPa. Speed ranges from 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X1150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1150S replacement — usually within 7-8 hours.