This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X40H, 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 SID80X40H
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X40H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 40mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X40H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X40H
- 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 SID80X40H
The AirTAC SID80X40H is a double-acting, double-rod ISO 15552 cylinder featuring a 80mm bore and 40mm stroke. Because a rod exits both ends, the effective piston area is identical in each direction, yielding equal push and pull force of 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. This model is discontinued; the direct replacement is the SAID80X40H, which reuses the same G3/8 port, M20x1.5 rod thread, and ISO 15552 mounting interface without any mechanical redesign.
The SAID upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life, while the SAI family expands functionality with the SAIL air-released lock and BSAI clamp-lock variants absent in the legacy SI line. This -H configuration uses Viton/FKM seals rated for 0 to 150 C. As a non-magnetic SKU, it cannot accept position switches. Note that air cushions only decelerate the piston near stroke end; an external rod lock or pilot-operated check valve is required to hold loads on air loss, as the cylinder will drift otherwise.
Airtac SID Series Double-Rod Cylinder SID80X40H Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X40H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X40H |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAID80X40H 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 SAID80X40H 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 SID80X40H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SID80X40H Is Used
Dual-Tool Transfer
Drives two synchronized grippers or clamps from opposite rod ends to pick and place parts on a conveyor without adding a second actuator.
Anti-Rotation Pressing
Applies 2268 N of equal pressing force in a high-temperature forming station, using the double-rod geometry to prevent piston rotation and ensure tool alignment.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X40H with the SAID80X40H
To replace the discontinued SID80X40H, specify the SAID80X40H directly—it is a direct swap retaining the 80mm bore, 40mm stroke, G3/8 port, and 36mm adjustable cushion. Size both directions by the equal-both-ways force: if 3175 N at 0.7 MPa is insufficient, step up to the 100mm bore (5153 N), or drop to the 63mm bore (1962 N) if lower force is acceptable. Choose a double-rod cylinder when you need anti-rotation stability, want to drive two tools from one piston, or need to mount a sensor cam on the back rod (though this specific non-magnetic SKU lacks the -S sensor groove for switches). Mounting options include Basic, FA, LB, and TC brackets. Because the 40mm stroke is under 300mm, side-load bending moments on the rod are minimal, but ensure the Viton -H seal is specified if ambient temperatures exceed 70 C up to 150 C. Never rely on the cylinder to hold a load without live air; use an external rod lock or the SAIL/BSAI lock variants for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X40H
- ✓ 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 SID80X40H FAQ
Yes, the SID80X40H is discontinued. The direct replacement is the SAID80X40H, which shares the same ISO 15552 mounting interface, 80mm bore, 40mm stroke, G3/8 port, and equal-both-ways force. The SAID upgrade features an improved two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because it is a double-rod cylinder, force is equal in both directions: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The air port is G3/8. It operates at 30-800 mm/s, uses a 25mm rod with an M20x1.5 thread, and the Viton -H seal supports temperatures up to 150 C.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X40H
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X40H replacement — usually within 7-8 hours.