This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X100, 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 SID50X100
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X100 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 SAID50X100, 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 → SAID50X100
- 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 SID50X100
The AirTAC SID50X100 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This architecture means both faces use the rod-side area, making push and pull force equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. It features a 50mm bore, 100mm stroke, 20mm rod, M16x1.5 thread, 30mm adjustable cushions, G1/4 port, and 30-800 mm/s speed. The SID50X100 is discontinued; the direct replacement is the SAID50X100, matching the ISO 15552 interface, bore, stroke, force, and mounting.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. A plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end. For held loads use an external rod lock or the SAIL/BSAI lock variants. This non-magnet SKU cannot take a switch.
Airtac SID Series Double-Rod Cylinder SID50X100 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X100 |
| 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 SAID50X100 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 SAID50X100 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 SID50X100
| 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 SID50X100 Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously, utilizing the equal both-ways force to ensure balanced cutting pressure on both sides of the workpiece.
Anti-Rotation Transfer Gate
Uses the twin-rod architecture to prevent mechanical rotation during rapid part diversion on a 30-800 mm/s packaging line, maintaining precise lateral tracking.
External Cam Positioning
Leverages the rear extending rod to carry an external sensor cam, allowing external position confirmation without internal magnet switches on the main body.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X100 with the SAID50X100
To replace the discontinued SID50X100, use the direct replacement SAID50X100. It reuses the exact ISO 15552 mounting interface (Basic, FA, LB, TC) and G1/4 port. Size both ways by checking neighbour bores while relying on the equal both-ways force. A double rod is right when you need anti-rotation, to drive two tools, or to mount a sensor cam on the back rod. This SKU lacks the -S magnet and cannot take a switch. For stroke lengths >=300, verify side-load limits.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X100
- ✓ 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 SID50X100 FAQ
Yes, the SID50X100 is discontinued. The direct replacement is the SAID50X100, which matches the ISO 15552 interface, 50mm bore, 100mm stroke, G1/4 port, and mounting hardware. The SAI family also adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
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. It operates at 0.15-1.0 MPa with 30mm adjustable cushions at each end. The cushion only decelerates near stroke end; it does not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X100
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X100 replacement — usually within 7-8 hours.