This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B06-SAI40X125S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B06-SAI40X125S in place of this model. 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-SI Battery Dedicated ISO Standard Cylinder B06-SI40X125S 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 drop-in replacement is the B06-SAI40X125S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC B06-SI40X125S is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 125mm stroke. The B06- prefix marks this as a battery-manufacturing dedicated variant, though mechanically it is identical to the base SI40X125S. Delivering 628 N push force at 0.5 MPa, it is now superseded by the SAI40X125S drop-in replacement. This upgrade shares the exact same ISO 15552 mounting interface, G1/4 port, and M12x1.25 rod thread.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For battery module handling, the safe working load is roughly 377 N (about 60% of the 628 N push force), yielding a vertical lift capacity of approximately 32 kg with a 2:1 safety margin. Note that a plain cylinder drifts without live air; for load holding, consider the SAIL lock variant or an external pilot check valve.
| Model | Airtac B06-SI Battery Dedicated ISO Standard Cylinder B06-SI40X125S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B06-SAI40X125S |
| 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-SAI40X125S 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-SAI40X125S produces the same force from the same bore — a true drop-in on output. 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).
Applies the 628 N push force at 0.5 MPa to align and press lithium-ion battery cells during automated stacking operations.
Moves battery modules along assembly lines with a 125mm stroke, fitting existing ISO 15552 fixtures for seamless SAI drop-in replacement.
Positions cell tabs for laser welding with precise 30-800 mm/s speed control and adjustable 27mm air cushions at both ends.
To replace the B06-SI40X125S, order the SAI40X125S. Verify your existing fixture matches the ISO 15552 mounting interface, 40mm bore, 125mm stroke, G1/4 port, and M12x1.25 rod thread. Because this unit includes a magnet (S), it supports CS1-B/DS1-B legacy sensors, though the SAI family uses current AirTAC switches. If sizing up or down, neighbouring bores are 32mm (402 N push @0.5 MPa) and 50mm (982 N push @0.5 MPa). For battery stacking or tabbing stations that must hold position without live air, upgrade to the SAIL air-released lock or BSAI clamp-lock variant, as standard cushions only decelerate at stroke end.
Replacement checklist
Yes, the B06-SI40X125S is discontinued. The exact drop-in replacement is the SAI40X125S. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 125mm stroke, G1/4 port, and mounting interface. The B06- prefix simply designates the battery-manufacturing dedicated variant, and the SAI replacement matches it mechanically.
The 40mm bore features a G1/4 air port and an M12x1.25 rod thread. Force output is 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, with a theoretical maximum of 128 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the B06-SAI40X125S replacement — usually within 7-8 hours.