This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B06-SAID40X250, 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-SID40X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 250mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B06-SAID40X250, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC B06-SID40X250 is a double-acting, double-rod ISO 15552 cylinder where the B06- prefix marks it as a battery-manufacturing dedicated variant, mechanically identical to the standard SID40X250. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal (528 N at 0.5 MPa). This model is discontinued; the direct replacement is the SAID40X250, which reuses the same ISO 15552 mounting interface, G1/4 port, and M12x1.25 rod thread.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks the -S magnet and cannot take a sensor; it also will not hold a load on air loss, as the 27 mm adjustable cushion only decelerates.
| Model | Airtac B06-SID Battery Dedicated ISO Standard Cylinder B06-SID40X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B06-SAID40X250 |
| Bore size | Ø40 mm |
| Stroke | 250 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-SAID40X250 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-SAID40X250 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. |
| ×250 | 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 stacking platens in cell assembly, ensuring precise layer alignment without rotational drift.
The twin-rod anti-rotation characteristic keeps battery modules oriented during transfer between welding stations.
Provides stable, equal clamping pressure on battery tabs from both ends, maintaining position during the weld cycle.
To replace the discontinued B06-SID40X250, use the SAID40X250 directly—it matches the 40 mm bore, 250 mm stroke, G1/4 port, and equal both-ways force. When sizing both ways, verify your load against the 528 N (at 0.5 MPa) limit, or step up to a 50 mm bore if higher force is needed. A double rod is right when you need anti-rotation stability or must drive two tools simultaneously. Mounting options include FA, LB, and TC brackets. Since this SKU lacks the -S magnet, add external sensors if needed. For this 250 mm stroke, side-load is minimal, but for strokes >=300 mm ensure guide alignment to prevent binding.
Replacement checklist
Yes, the B06-SID40X250 is discontinued. The direct replacement is the SAID40X250. The B06- prefix simply marks it as the battery-manufacturing dedicated variant of the base SID40X250. The SAID replacement shares the exact same ISO 15552 interface, bore, stroke, and G1/4 port.
Because it is a double-rod cylinder, force is equal both ways: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The air port is G1/4. It does not hold load on air loss; the 27 mm cushion only decelerates. For held loads, use an external rod lock or SAIL/BSAI variant.
Send us the quantity and destination. We confirm price, stock and lead time on the B06-SAID40X250 replacement — usually within 7-8 hours.