This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X195, 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.

The AirTAC Airtac SID Series Double-Rod Cylinder SID40X195 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 195mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X195, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID40X195 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. This SKU has no -S magnet and cannot carry a sensor. It is discontinued; the direct replacement is the SAID40X195, matching the 40mm bore, 195mm stroke, G1/4 port, and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. A double rod prevents rotation and lets the back rod drive a second tool. The 27mm adjustable cushion decelerates but does not hold loads on air loss; use SAIL or an external rod lock.
| Model | Airtac SID Series Double-Rod Cylinder SID40X195 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X195 |
| Bore size | Ø40 mm |
| Stroke | 195 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 SAID40X195 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAID40X195 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×195 | 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).
Equal both-ways force drives parts off a belt and retracts the tool without pressure imbalance.
The rear rod extends to actuate a secondary gripper or valve cam simultaneously.
Double-rod geometry prevents piston twist during vertical gripping of machined components.
Replace the discontinued SID40X195 directly with the SAID40X195, reusing the exact FA, LB, or TC ISO 15552 mounts. Size both ways by checking neighbouring bores (32mm or 50mm) against the equal 528 N @0.5 MPa force. Choose a double rod when anti-rotation or dual-tool drive is needed. As this SKU lacks the -S magnet, add external sensing if required. For this 195mm stroke, side-load is minimal, but for strokes >=300mm ensure guide alignment to prevent rod binding.
Replacement checklist
Yes, the SID40X195 is discontinued. The direct replacement is the SAID40X195, sharing the same ISO 15552 interface, 195mm stroke, G1/4 port, and equal force.
Force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The air port is G1/4, the rod is Ø16mm, and it has a 27mm adjustable cushion.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X195 replacement — usually within 7-8 hours.