This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X350, 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 SID80X350
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X350
- 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 SID80X350
The AirTAC SID80X350 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Because both faces use the rod-side area, it never quotes a larger single-rod push value. This bore uses a G3/8 air port, a Ø25 mm piston rod with an M20x1.5 thread, and 36 mm adjustable air cushions at each end. The SID line is discontinued and this exact model is replaced direct by the SAID80X350, sharing the same interface, bore, stroke, force, port and mounting.
The SAID80X350 upgrade uses an improved piston seal with two Y-shaped one-way elements for low start-up pressure and long life, while adding SAIL and BSAI lock variants the SI line lacked. For this non-magnet SKU, a sensor cannot be fitted. A plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID80X350 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X350 |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAID80X350 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 SAID80X350 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 SID80X350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SID80X350 Is Used
Dual-End Transfer Pusher
Drives a transfer carriage on a conveyor using both rod ends simultaneously, ensuring equal push and pull force of 2268 N @0.5 MPa for stable part movement without rotation.
Symmetrical Machining Clamp
Clamps a workpiece from opposite sides using the twin rods exiting both ends, maintaining precise alignment and equal holding pressure during machining operations.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X350 with the SAID80X350
Replace the discontinued SID80X350 directly with the SAID80X350, reusing your existing ISO 15552 FA, LB, or TC mounting hardware without machining changes. Size both ways by checking the equal force against neighbour bores: the 63 mm bore yields 1402 N @0.5 MPa, while the 100 mm bore yields 3681 N @0.5 MPa, ensuring you match the 2268 N requirement in both directions. A double rod is right when you need anti-rotation stability or want to drive two tools from one piston. This SKU lacks the -S magnet and cannot take a switch. For the 350 mm stroke, add external guides to prevent rod bending under side-load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X350
- ✓ 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 SID80X350 FAQ
Yes, the SID80X350 is discontinued. The direct replacement is the SAID80X350, which shares the same ISO 15552 interface, bore, stroke, force, G3/8 port and mounting. The SAID upgrade features an improved piston seal and adds lock variants like SAIL and BSAI.
Force is equal both ways because a rod exits both ends: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The bore uses a G3/8 air port, a Ø25 mm rod with M20x1.5 thread, and 36 mm adjustable cushions. The cushion only decelerates; it does not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X350
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X350 replacement — usually within 7-8 hours.