This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X400, 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 SID100X400
The AirTAC Airtac SID Series Double-Rod Cylinder SID100X400 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 SAID100X400, 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 → SAID100X400
- 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 SID100X400
The AirTAC SID100X400 is a double-acting, double-rod ISO 15552 cylinder featuring a 100mm bore and 400mm stroke. Because a rod exits both ends, the effective piston area is identical in each direction, yielding equal force both ways (3681N at 0.5MPa). This specific SID model is discontinued and is replaced directly by the SAID100X400. The SAID direct shares the exact ISO 15552 mounting interface, G1/2 port, M20x1.5 rod thread, and 3681N force, while upgrading to a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The double-rod architecture prevents rod rotation and allows the rear extension to drive a secondary mechanism or carry a sensor cam. Note this SKU lacks the -S magnet and cannot accept switches. As a 400mm stroke risks rod bending under side loads, external guides are advised. This cylinder cannot hold loads without live air; use an external rod lock or SAIL/BSAI variant for holding, as cushions only decelerate.
Airtac SID Series Double-Rod Cylinder SID100X400 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X400 |
| 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 SAID100X400 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 SAID100X400 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 SID100X400
| 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 SID100X400 Is Used
Dual-Tool Transfer
Drives two opposing tooling heads simultaneously using both rod extensions, ensuring perfectly synchronized material handling with equal 3681N force in both directions.
Anti-Rotation Press
Prevents piston rod twisting during high-precision pressing or indexing operations where a single rod might allow rotational drift under offset loads.
Symmetric Stopper Gate
Actuates a physical stopper barrier from either end, using the equal push/pull dynamics to reliably hold and release heavy workpieces on a machining line.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X400 with the SAID100X400
To replace the discontinued SID100X400, install the SAID100X400, which matches the 100mm bore, 400mm stroke, G1/2 port, and ISO 15552 mounting footprint without machining. The double-rod design provides equal push and pull force (3681N at 0.5MPa), making it ideal when the return stroke must do equal work or when anti-rotation stability is required. If sizing down, the 80mm bore yields 2268N, while the 125mm bore provides 5734N; both maintain the equal both ways characteristic. Mounting options include Basic, FA, LB, and TC brackets. This non-magnetic SKU cannot accept sensors. For the 400mm stroke, ensure external guides support side loads to prevent rod bending. Remember that air cushions only decelerate; for load holding on air loss, specify an external rod lock or a SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X400
- ✓ 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 SID100X400 FAQ
Yes, the SID100X400 is discontinued. The direct replacement is the SAID100X400. It shares the identical ISO 15552 mounting interface, 100mm bore, 400mm stroke, G1/2 port, and equal both ways force, while adding an upgraded two-piece Y-shaped piston seal.
The double-rod design provides equal force both ways: 3681N at 0.5MPa, 5153N at 0.7MPa, and 6626N at 0.9MPa. Operating speed is 30-800 mm/s. The cylinder uses a G1/2 port and features 36mm adjustable air cushions at each end to decelerate the load.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X400
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X400 replacement — usually within 7-8 hours.