This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B06-SAID40X125, 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 B06-SID Battery Dedicated ISO Standard Cylinder B06-SID40X125 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 125mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B06-SAID40X125, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC B06-SID40X125 is a double-acting, double-rod ISO 15552 cylinder where the rod exits both ends, making push and pull force equal at 528 N (@0.5 MPa). The B06- prefix marks this as a battery-manufacturing dedicated variant of the base SID40X125, mechanically identical to it for cell and pack assembly lines. This SID model is discontinued; the direct replacement is the SAID40X125. It shares the exact ISO 15552 mounting interface, G1/4 port, 125 mm stroke, and M12x1.25 rod thread, ensuring seamless retrofitting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Because the second rod occupies piston area on both faces, it provides anti-rotation stability and can drive two tools simultaneously. Note: this non-S SKU lacks a magnet and cannot take sensors. Air cushions only decelerate; use an external rod lock or SAIL/BSAI variant for load holding.
| Model | Airtac B06-SID Battery Dedicated ISO Standard Cylinder B06-SID40X125 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B06-SAID40X125 |
| Bore size | Ø40 mm |
| Stroke | 125 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 B06-SAID40X125 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 B06-SAID40X125 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. |
| ×125 | 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 precise electrode stacking and pressing in cell assembly without rotational drift.
The rear rod simultaneously actuates a secondary cutter or clamp for battery tab welding, saving space.
Anti-rotation stability ensures accurate positioning of battery modules onto conveyor belts during pack assembly.
To replace the discontinued B06-SID40X125, specify the SAID40X125, which matches the 40 mm bore, 125 mm stroke, G1/4 port, and ISO 15552 dimensions. When sizing, remember force is equal both ways (528 N @0.5 MPa); if upgrading to the 50 mm bore yields 825 N both ways, or stepping down to 32 mm gives 345 N. A double-rod design is right when you need anti-rotation resistance or must drive two mechanisms from one cylinder. Mounting options include Basic, FA, LB, and TC. This SKU lacks the -S magnet, so magnetic sensing is impossible. For strokes >=300 mm, verify side-load limits to prevent binding.
Replacement checklist
Yes, the B06-SID40X125 (battery-manufacturing dedicated SID40X125) is discontinued. The direct replacement is the SAID40X125. It shares the identical ISO 15552 interface, 40 mm bore, 125 mm stroke, G1/4 port, and mounting, but features an upgraded SAI piston seal.
Force is equal both ways due to the double-rod design: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The air port is G1/4. Remember, cushions only decelerate; use an external rod lock for load holding.
Send us the quantity and destination. We confirm price, stock and lead time on the B06-SAID40X125 replacement — usually within 7-8 hours.