This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X50S, 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 SID80X50S
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X50S 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 SAID80X50S, 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 → SAID80X50S
- 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 SID80X50S
The AirTAC SID80X50S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making the push and pull force equal at 2268 N @0.5 MPa. This model is discontinued; the direct replacement is the SAID80X50S, matching the 80mm bore, 50mm stroke, G3/8 port, and M20x1.5 rod thread. The SAI upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side area, the equal force prevents rod deflection on long strokes. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate; use an external rod lock or SAIL/BSAI variant to hold loads.
Airtac SID Series Double-Rod Cylinder SID80X50S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X50S |
| 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 SAID80X50S 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 SAID80X50S 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 SID80X50S
| 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 SID80X50S Is Used
Equal-Force Stamping
Drives a stamping die where the equal push and pull force of 3175 N @0.7 MPa ensures consistent material forming and clean retraction without rod deflection.
Dual-End Transfer
Simultaneously pushes a part from one belt and pulls a second tool from the opposite end using both extending rods, maximizing cycle efficiency.
Anti-Rotation Guiding
Handles a precision workpiece where the dual-rod architecture resists torsional twist, maintaining strict alignment without external guide rails.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X50S with the SAID80X50S
To replace the discontinued SID80X50S, install the SAID80X50S directly into your existing ISO 15552 FA, LB, or TC mounting. The 80mm bore yields equal both-ways force of 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. If sizing neighboring bores, a 63mm bore provides less force (1402 N @0.5 MPa) while a 100mm bore provides more (3681 N @0.5 MPa). Choose a double-rod cylinder when you need anti-rotation stability or need to drive a sensor cam from the back rod. The -S suffix ensures compatibility with legacy CS1-B/DS1-B sensors. For this 50mm stroke, side-load bending is minimal, but any stroke over 300mm requires checking the rod's lateral load limits.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X50S
- ✓ 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 SID80X50S FAQ
Yes, the SID80X50S is discontinued. The direct replacement is the SAID80X50S. It shares the identical ISO 15552 interface, 80mm bore, 50mm stroke, G3/8 port, and mounting dimensions, but features an upgraded two-piece Y-shaped piston seal for longer life.
The 80mm bore has a G3/8 air port and provides equal force both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The rod is Ø25mm with an M20x1.5 thread. The cylinder operates at 0.15-1.0 MPa with a speed range of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X50S replacement — usually within 7-8 hours.