This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X250, 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 SID100X250
The AirTAC SID Series Double-Rod Cylinder SID100X250 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 SAID100X250, 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 → SAID100X250
- 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 SID100X250
The AirTAC SID100X250 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force (3681 N at 0.5 MPa). The bore is 100 mm, the port is G1/2, and it uses an M20x1.5 rod thread. This SID model is discontinued; the direct replacement is the SAID100X250, which reuses the exact same mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because the second rod acts as an anti-rotation guide and can drive a second tool simultaneously, this architecture is ideal for symmetrical work. Without a -S suffix, this SKU has no magnet and cannot mount reed sensors. Note that air cushions only decelerate the piston near stroke end; they do not hold loads on air loss, so an external rod lock or SAIL/BSAI variant is required for suspended masses.
Airtac SID Series Double-Rod Cylinder SID100X250 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X250 |
| 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 SAID100X250 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 SAID100X250 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 SID100X250
| 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 SID100X250 Is Used
Synchronized Tool Driving
Drives two opposing forming tools simultaneously from a single piston, utilizing the equal both-ways force to ensure perfectly balanced contact pressure on both ends.
Anti-Rotation Transfer
Transfers workpieces along a conveyor line where the dual-rod construction prevents mechanical twisting and maintains precise alignment without external guides.
Vertical Lift Mechanism
Lifts loads vertically in a packaging line, providing stable upward and downward thrust while relying on an external rod lock to hold the load safely when air is removed.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X250 with the SAID100X250
To replace the discontinued SID100X250, install the SAID100X250 directly into the existing ISO 15552 mounting (Basic, FA, LB, or TC) without altering the G1/2 pneumatic plumbing. Size both directions by confirming the equal force requirement: if 6626 N at 0.9 MPa is insufficient, step up to bore 125, or drop to bore 80 if 5153 N at 0.7 MPa is excessive. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools from one piston. This non-magnetic SKU cannot accept switches; if sensing is needed, specify a -S magnet model. For strokes of 300 mm or longer, verify the side-load limits to prevent guide bushing wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X250
- ✓ 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 SID100X250 FAQ
Yes, the AirTAC SID100X250 is discontinued. The direct replacement is the SAID100X250. It shares the identical ISO 15552 interface, 100 mm bore, 250 mm stroke, G1/2 port, and equal both-ways force, but features an upgraded piston seal for longer life.
The G1/2 port bore delivers equal force in both directions due to the double-rod design: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. It operates at 30-800 mm/s with 36 mm adjustable cushions at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X250
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X250 replacement — usually within 7-8 hours.