This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X400SH, 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 SI100X400SH
The AirTAC Airtac SI100 Standard Cylinder SI100X400SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X400SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X400SH
- 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 SI100X400SH
The AirTAC SI100X400SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 400mm stroke. Delivering 3927N push force at 0.5MPa, it features a G1/2 port, M20x1.5 rod thread, and a high-temp Viton H seal (0-150C). The direct replacement is the SAI100X400SH, matching the interface, force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The original -S magnet supports CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X400SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X400SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X400SH |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAI100X400SH 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 SAI100X400SH 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 SI100X400SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SI100X400SH Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 3927N push force at 0.5MPa with stable 400mm travel.
Pallet Handling
Shifts heavy loaded pallets on conveyors, utilizing the 100mm bore for high thrust and smooth cushioning.
High-Tact Forming
Operates in high-temperature forming jigs using the Viton H seal, rated for 0 to 150C environments.
Replacing the Airtac SI100 Standard Cylinder SI100X400SH with the SAI100X400SH
To replace the SI100X400SH, order the SAI100X400SH. Verify the ISO 15552 mounting dimensions, 100mm bore, 400mm stroke, G1/2 port, and magnet. Sizing both ways: a 125mm bore yields 6136N [email protected], while an 80mm bore yields 2513N. For this 400mm stroke, use external guides to prevent rod bending and side-load wear. The 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 variants. The SAIF variant integrates a 4M valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X400SH
- ✓ 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 SI100X400SH FAQ
Yes, the SI100X400SH is discontinued. The direct replacement is the SAI100X400SH. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 400mm stroke, G1/2 port, and mounting interface.
This double-acting cylinder has a G1/2 port. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X400SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X400SH replacement — usually within 7-8 hours.