This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X50, 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 SID80X50
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X50
- 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 SID80X50
The AirTAC SID80X50 is a discontinued ISO 15552 double-acting double-rod cylinder featuring a 25 mm rod exiting both ends, yielding equal push and pull force of 2268 N at 0.5 MPa. It includes a G3/8 port, M20x1.5 rod thread, and 36 mm adjustable air cushions. The direct replacement is the SAID80X50, which adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Because the rod exits both ends, the back rod can drive a second tool or carry a sensor cam while resisting rotation. This non-magnetic SKU cannot take a switch; for load holding on air loss, use an external rod lock or SAIL/BSAI variant, as cushions only decelerate.
Airtac SID Series Double-Rod Cylinder SID80X50 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X50 |
| Bore size | Ø80 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 SAID80X50 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAID80X50 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 SID80X50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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 SID80X50 Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously from one piston, ensuring perfectly synchronized cutting cycles.
Anti-Rotation Transfer Arm
Moves parts across a conveyor belt without twisting, using the dual-rod geometry to maintain strict alignment.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X50 with the SAID80X50
To replace the discontinued SID80X50, install the SAID80X50 directly; it preserves the 80 mm bore, 50 mm stroke, G3/8 port, and ISO 15552 mounting. Size both directions by the equal 2268 N force at 0.5 MPa; if less is needed, the 63 mm bore offers 1402 N, while the 100 mm bore provides 3681 N. A double rod is right when you need anti-rotation or a rear cam. Reuse FA, LB, or TC mounts. This SKU lacks the -S magnet, so no sensor is possible. For strokes >=300 mm, verify side-load limits.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X50
- ✓ 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 SID80X50 FAQ
Yes, the SID80X50 is discontinued. The direct replacement is the SAID80X50, which shares the same ISO 15552 mounting, 80 mm bore, 50 mm stroke, G3/8 port, and equal force, but adds an upgraded piston seal.
Force is equal both ways: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The operating speed is 30-800 mm/s. Note that cushions only decelerate; use an external rod lock for load holding.
Request a Quote for the SAID80X50
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X50 replacement — usually within 7-8 hours.