This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X100S, 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 SID50X100S
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X100S
- 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 SID50X100S
The AirTAC SID50X100S 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 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The bore is 50 mm, the piston rod is Ø20 mm, and the air port is G1/4. This SID model is discontinued; the direct replacement is the SAID50X100S, which retains the same ISO 15552 mounting interface, bore, stroke, and force.
The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. A double-rod design prevents rotation and lets the back rod carry a sensor cam or drive a second tool. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID50X100S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X100S |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID50X100S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAID50X100S 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 SID50X100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | 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 SID50X100S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously with equal push and pull force, utilizing the 825 N @0.5 MPa capacity for balanced material removal.
Anti-Rotation Transfer Gate
Uses the double-rod architecture to prevent mechanical rotation during rapid part diversion, maintaining precise alignment at 30-800 mm/s.
Symmetric Sorting Diverter
Employs both extending rods to push and pull sorting arms with identical 1154 N @0.7 MPa force, ensuring stable package handling.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X100S with the SAID50X100S
To replace the discontinued SID50X100S, use the SAID50X100S direct: it matches the 50 mm bore, 100 mm stroke, G1/4 port, and ISO 15552 mounting. Size both ways by checking equal force across neighbour bores, ensuring the 825 N @0.5 MPa capacity fits your load. Choose a double-rod cylinder when you need anti-rotation, a back-rod sensor cam, or to drive two tools. Mounting options include Basic, FA, LB, and TC. The -S magnet enables position sensing. For stroke >=300, verify side-load limits. A plain cylinder does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X100S
- ✓ 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 SID50X100S FAQ
Yes, the SID50X100S is discontinued. The direct replacement is the SAID50X100S. It shares the same ISO 15552 interface, 50 mm bore, 100 mm stroke, G1/4 port, and mounting, but features an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The air port is G1/4, the rod is Ø20 mm with an M16x1.5 thread, and it includes a 30 mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X100S replacement — usually within 7-8 hours.