This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X900S, 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 SID80X900S
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X900S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X900S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X900S
- 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 SID80X900S
The AirTAC SID80X900S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Because both faces use the rod-side annular area, push and pull force are equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The bore dictates a G3/8 air port, M20x1.5 rod thread, and 36 mm adjustable air cushions at each end. This SID model is discontinued; the direct replacement is the SAID80X900S, which reuses the same ISO 15552 mounting interface, 900 mm stroke, and magnet configuration.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life, and adds SAIL/BSAI lock variants absent from the SI line. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end, so use an external rod lock for held loads. The 900 mm stroke requires external guides to prevent rod bending under side loads.
Airtac SID Series Double-Rod Cylinder SID80X900S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X900S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X900S |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAID80X900S 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 SAID80X900S 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 SID80X900S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SID80X900S Is Used
Equal-Force Transfer
Drives a conveyor pusher where the return stroke must match the forward stroke's 3175 N @0.7 MPa force to retract a heavy carriage without force imbalance.
Dual-Tool Machining
Uses the second protruding rod to drive a secondary operation or sensor cam, maintaining identical push and pull kinematics for synchronized part processing.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X900S with the SAID80X900S
To replace the discontinued SID80X900S, install the direct replacement SAID80X900S; it matches the 80 mm bore, 900 mm stroke, G3/8 port, and ISO 15552 mounting (Basic, FA, LB, TC, FTC, TCM1, TCM2). A double-rod design is correct when you need equal force both ways, anti-rotation stability, or a back rod to carry a sensor cam. If sizing both ways, verify the 2268 N @0.5 MPa equal force is sufficient, or step to the 100 mm bore. The -S suffix means the piston magnet is present for legacy CS1-B/DS1-B switches. Because the stroke is 900 mm (>=300), you must support the load with external guides to mitigate rod bending and side-load stress.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X900S
- ✓ 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 SID80X900S FAQ
Yes, the SID80X900S is discontinued. The direct replacement is the SAID80X900S. It shares the same ISO 15552 interface, 80 mm bore, 900 mm stroke, G3/8 port, and equal-both-ways force, but uses an upgraded two-piece Y-shaped piston seal for longer life.
The double-rod design provides equal force both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The fixed port size for the 80 mm bore is G3/8. It operates at 0.15-1.0 MPa with a 36 mm adjustable cushion at each end, and speed ranges from 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X900S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X900S replacement — usually within 7-8 hours.