This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X25S, 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 SID100X25S
The AirTAC Airtac SID Series Double-Rod Cylinder SID100X25S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 25mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X25S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID100X25S
- 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 SID100X25S
The AirTAC SID100X25S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This geometry means both faces use the rod-side area, making push and pull force equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The direct replacement is the SAID100X25S, matching the 100mm bore, 25mm stroke, G1/2 port, and mounting interface. The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
With a 25mm stroke, the double-rod design offers anti-rotation stability and allows the back rod to carry a sensor cam. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that a plain cylinder drifts on air loss; the air 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 SID100X25S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X25S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X25S |
| Bore size | Ø100 mm |
| Stroke | 25 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 SAID100X25S 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 SAID100X25S 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 SID100X25S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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 SID100X25S Is Used
Synchronized Gripper Actuation
Drives opposing gripper jaws simultaneously from a single piston, ensuring perfectly centered clamping on machined parts using equal both-ways force.
Dual-End Transfer Pusher
Transfers workpieces from one conveyor belt to another using the rear rod, while the front rod simultaneously indexes the next component.
Anti-Rotation Indexing Unit
Lifts and lowers precision tooling without rotational drift, using the twin-rod geometry to maintain strict angular alignment during vertical motion.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X25S with the SAID100X25S
To replace the discontinued SID100X25S, install the SAID100X25S direct using the same ISO 15552 mounting interface (Basic, FA, LB, TC, FTC, TCM1, TCM2) and G1/2 port. Size both ways by checking neighbouring bores if you need less force, but remember the double-rod provides equal push/pull. A double rod is right when you need anti-rotation resistance or a back rod to drive a second tool. Select the -S option for the piston magnet. Because the stroke is under 300mm, side-load bending moments are minimal, but always verify shaft alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X25S
- ✓ 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 SID100X25S FAQ
Yes, the SID100X25S is discontinued. The direct replacement is the SAID100X25S, which shares the same ISO 15552 interface, 100mm bore, 25mm stroke, G1/2 port, and mounting hardware. The SAI replacement also uses an upgraded piston seal for longer life.
As a double-rod cylinder, force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The air port is G1/2, the rod is 25mm with an M20x1.5 thread, and speed ranges 30-800 mm/s. It operates at 0.15-1.0 MPa with 36mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X25S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X25S replacement — usually within 7-8 hours.