This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X50S, 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 SID100X50S
The AirTAC Airtac SID Series Double-Rod Cylinder SID100X50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID100X50S
- 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 SID100X50S
The AirTAC SID100X50S 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. The direct replacement is the SAID100X50S, sharing the same 100mm bore, 50mm stroke, G1/2 port, and mounting interface. The SAI upgrade uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This 100mm bore model features a 25mm piston rod, M20x1.5 rod-end thread, and 36mm adjustable air cushions at each end. The second rod prevents rotation and can drive two tools or carry a sensor cam. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder does not hold loads on air loss; cushions only decelerate, so use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID100X50S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X50S |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAID100X50S 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 SAID100X50S 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 SID100X50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SID100X50S Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously from one piston, utilizing the equal both ways force to deliver 3681 N @0.5 MPa cutting pressure on both faces.
Anti-Rotation Transfer Unit
The dual-rod architecture prevents mechanical rotation during lateral part transfer, maintaining strict alignment without external linear guides.
Dual-Sensor Cam Positioner
Uses the extending back rod as a dedicated sensor cam surface for legacy CS1-B/DS1-B switches, keeping the primary working rod unobstructed for clamping.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X50S with the SAID100X50S
To replace the discontinued SID100X50S, install the direct replacement SAID100X50S, which preserves the ISO 15552 mounting interface, 50mm stroke, and equal both ways force. When sizing both ways, verify the 3681 N @0.5 MPa output fits your system, or step to neighbouring bores like 80mm or 125mm to scale force symmetrically. A double rod is right when you need anti-rotation, a back rod to carry a sensor cam, or to drive two tools. Reuse FA, LB, or TC mounts directly. The -S magnet enables position sensing. For strokes >=300mm, verify side-load limits to prevent guide wear. Speed is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X50S
- ✓ 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 SID100X50S FAQ
Yes, the AirTAC SID100X50S is discontinued. The direct replacement is the SAID100X50S. It shares the same ISO 15552 interface, 100mm bore, 50mm stroke, G1/2 port, and equal both ways force, while adding an upgraded piston seal.
Because it is 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 fixed air port is G1/2, the rod is 25mm with an M20x1.5 thread, and speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X50S replacement — usually within 7-8 hours.