This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X250N, 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 SID100X250N
The AirTAC Airtac SID Series Double-Rod Cylinder SID100X250N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X250N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID100X250N
- 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 SID100X250N
The AirTAC SID100X250N is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It features a 100mm bore, 25mm rod, M20x1.5 thread, G1/2 port, and 36mm adjustable air cushions. The direct replacement is the SAID100X250N, which reuses the exact ISO 15552 mounting interface and adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
Because both faces use the rod-side area, the double-rod design prevents rod rotation and can drive two tools simultaneously. This SKU lacks the -S magnet and cannot take a sensor. The -N NBR seal supports -20 to +70 C (Viton H raises this to 0-150 C). A plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID100X250N Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X250N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X250N |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAID100X250N 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 SAID100X250N 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 SID100X250N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SID100X250N Is Used
Dual-Tool Machining Station
Drives two opposing machining heads from one piston, utilizing the equal both-ways 5153 N @0.7 MPa force to synchronize cutting operations.
Anti-Rotation Transfer Gate
Uses the twin-rod architecture to prevent rod twist during heavy lateral transfer on a conveyor, maintaining precise alignment without external guides.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X250N with the SAID100X250N
To replace the discontinued SID100X250N, install the direct replacement SAID100X250N, matching the 100mm bore, 250mm stroke, G1/2 port, and ISO 15552 mounting footprint (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both ways by checking the equal force: if 5153 N @0.7 MPa is insufficient, step up to bore 125 (8028 N), or drop to bore 80 (3175 N). A double rod is right when you need anti-rotation, a back rod to carry a sensor cam, or dual-tool drive. This non-magnetic SKU cannot take a switch; for sensing use a -S model. For stroke lengths >=300mm, verify side-load limits to prevent guide wear. Speed is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X250N
- ✓ 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 SID100X250N FAQ
Yes, the SID100X250N is discontinued. The direct replacement is the SAID100X250N, offering the same ISO 15552 interface, 100mm bore, 250mm stroke, G1/2 port, and equal both-ways force, but with an upgraded piston seal.
Force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The bore is 100mm with a G1/2 air port, a 25mm rod, M20x1.5 thread, and 36mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X250N
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X250N replacement — usually within 7-8 hours.