This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X100S, 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 SID40X100S
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAID40X100S
- 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 SID40X100S
The AirTAC SID40X100S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This means both faces use the rod-side area, so push and pull force are equal at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The bore is 40 mm, the piston rod is Ø16 mm, the rod-end thread is M12x1.25, the air port is G1/4, and adjustable air cushions are 27 mm at each end. This SID model is discontinued and the direct replacement is the SAID40X100S, which shares the same interface, bore, stroke, force, port, and mounting.
The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam or drive two tools simultaneously. The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that a plain cylinder does not hold its load on air loss; the air cushion only decelerates near stroke end, so use an external rod lock or the SAIL/BSAI lock variant for held loads.
Airtac SID Series Double-Rod Cylinder SID40X100S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X100S |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID40X100S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAID40X100S 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 SID40X100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SID40X100S Is Used
Synchronized Tool Driving
Drives two separate operations simultaneously from one cylinder, utilizing both rod ends to maintain perfectly synchronized timing and equal push/pull force.
Anti-Rotation Guiding
Prevents piston rotation in precision handling tasks where angular deflection cannot be tolerated, using the dual rods for rigid linear guidance.
Dual-Sensor Cam Tracking
Uses the rear exiting rod to carry a sensor cam, freeing the primary rod for tooling while allowing legacy CS1-B/DS1-B switches to track position.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X100S with the SAID40X100S
To replace the discontinued SID40X100S, use the direct replacement SAID40X100S, which reuses the exact ISO 15552 mounting interface (Basic, FA, LB, TC) without modifications. Size both ways by checking neighbour bores if you need more or less equal force, ensuring you never quote a larger single-rod push value. A double rod is right when you need anti-rotation stability or want to drive two tools from one cylinder. The -S magnet enables position sensing. For stroke lengths of 300 mm or greater, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X100S
- ✓ 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 SID40X100S FAQ
Yes, the SID40X100S is discontinued. The direct replacement is the SAID40X100S. It shares the same ISO 15552 mounting interface, 40 mm bore, 100 mm stroke, G1/4 port, and equal-both-ways force, but adds an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The air port is G1/4, the piston rod is Ø16 mm, and it operates at speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X100S
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