This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X400S, 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 SID Series Double-Rod Cylinder SID100X400S
The AirTAC SID Series Double-Rod Cylinder SID100X400S 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 SAID100X400S, 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 → SAID100X400S
- 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 SID Series Double-Rod Cylinder SID100X400S
The AirTAC SID100X400S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It features a 100mm bore, G1/2 air port, M20x1.5 rod thread, and 36mm adjustable cushions. The direct replacement is the SAID100X400S, sharing the same interface, bore, stroke, and mountings.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For this 400mm stroke, external guides must support side loads to prevent rod bending. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID100X400S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X400S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X400S |
| 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 SAID100X400S 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 SAID100X400S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID100X400S
| 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 SID Series Double-Rod Cylinder SID100X400S Is Used
Equal-Force Pressing
Drives a forming tool where the return stroke must exert the same 5153 N @0.7 MPa force as the advance, utilizing both rod-side piston areas.
Dual-End Transfer
Simultaneously pushes two workpieces from opposite ends of a 400mm stroke, keeping motion synchronized without external linkages.
Anti-Rotation Guiding
Handles a heavy vertical lift of up to 188 kg where the twin rods prevent the load from twisting during transit.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X400S with the SAID100X400S
To replace the discontinued SID100X400S, install the direct replacement SAID100X400S, which reuses the exact ISO 15552 mounting interface (Basic, FA, LB, TC) and G1/2 port. Because force is equal both ways, size both directions by checking neighbor bores: the 80mm bore yields 2268 N @0.5 MPa, and the 125mm bore yields 5734 N @0.5 MPa. A double-rod cylinder is correct when you need anti-rotation stability, or when the back rod carries a sensor cam. For the 400mm stroke, add an external guide to absorb side loads and prevent rod bending. The -S magnet enables position sensing; note that a plain cylinder does not hold loads on air loss, so use an external rod lock or the SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X400S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID100X400S FAQ
Yes, the SID100X400S is discontinued. The direct replacement is the SAID100X400S, which shares the same ISO 15552 interface, 100mm bore, 400mm stroke, G1/2 port, and mountings, while upgrading the piston seal.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. Speed is 30-800 mm/s. It operates at 0.15-1.0 MPa with a 1.5 MPa proof pressure, and the G1/2 port is fixed by the 100mm bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X400S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X400S replacement — usually within 7-8 hours.