This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X600, 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 SID40X600
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X600 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 600mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X600, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAID40X600
- 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 SID40X600
The AirTAC SID40X600 is a discontinued double-acting double-rod ISO 15552 cylinder where a Ø16 mm rod exits both ends of the extruded aluminum barrel. This geometry means the effective piston area is identical on both faces, yielding equal push and pull force (528 N at 0.5 MPa) without quoting a larger single-rod push value. The bore dictates a fixed G1/4 port, M12x1.25 rod thread, and 27 mm adjustable air cushions at each end. As this SKU lacks the -S magnet, it cannot accept a magnetic switch for position sensing.
The direct replacement is the SAID40X600, which preserves the 600 mm stroke, ISO 15552 mounting interface, and equal-both-ways force. The upgraded SAI family uses a two Y-shaped one-way piston seal for lower start-up pressure and longer life, and introduces the SAIL air-released lock and BSAI clamp-lock variants the SI line lacked. Note that 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 SID40X600 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X600 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X600 |
| Bore size | Ø40 mm |
| Stroke | 600 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID40X600 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAID40X600 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 SID40X600
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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 SID40X600 Is Used
Equal-Stroke Transfer Pusher
Drives a conveyor diverter where the forward and return strokes must move identical 27 kg loads at the same 528 N force, preventing uneven cycle timing.
Anti-Rotation Machining Fixture
Clamps a part for machining using the twin-rod architecture to resist rotational torque, maintaining rigid alignment without twisting during the cut.
Dual-Tool Shuttle Actuator
Mounts a different tool on each rod end so the 600 mm stroke brings the active tool into the work zone while the idle tool retracts safely out of the way.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X600 with the SAID40X600
To replace the discontinued SID40X600, specify the direct replacement SAID40X600, which retains the exact 40 mm bore, 600 mm stroke, G1/4 port, and ISO 15552 mounting dimensions (Basic, FA, LB, TC, FTC, TCM1, TCM2) without requiring bracket changes. Because force is equal both ways at 528 N @0.5 MPa, size both directions identically; if more thrust is needed, step up to the 50 mm bore (825 N @0.5 MPa), or drop to the 32 mm bore (345 N @0.5 MPa) if less is required. A double-rod design is the right choice when you need anti-rotation stability, equal work on both strokes, or a back rod to carry a sensor cam. This non-magnet SKU cannot take a switch, so sensing requires external methods. For the 600 mm stroke, add external guides to prevent rod bending and side-load damage. Operating speed is 30-800 mm/s, pressure is 0.15-1.0 MPa, and temperature is -20 to +70 C (Viton H raises this to 0-150 C).
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X600
- ✓ 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 SID40X600 FAQ
Yes, the SID40X600 is discontinued. The direct replacement is the SAID40X600. It matches the 40 mm bore, 600 mm stroke, G1/4 port, and ISO 15552 mounting interface, while adding an upgraded two Y-shaped one-way piston seal for longer life.
Force is equal both ways at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. It uses a G1/4 air port, has an adjustable 27 mm cushion, and operates at 30-800 mm/s. The cushion only decelerates near stroke end; it does not hold loads on air loss, so use an external rod lock for vertical holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X600
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X600 replacement — usually within 7-8 hours.