This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B06-SAI40X50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B06-SAI40X50S 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-SI40X50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 50mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B06-SAI40X50S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC B06-SI40X50S is a discontinued double-acting ISO 15552 profile cylinder. The B06- prefix marks it as a battery-manufacturing dedicated variant of the SI40X50S, mechanically identical to the base model. Delivering 628 N push force at 0.5 MPa through a 40 mm bore and 50 mm stroke, it is replaced by the SAI40X50S. This drop-in successor shares the exact 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. For your sizing, the safe working load is roughly 377 N (about 60% of the 628 N figure), allowing a 32 kg vertical lift with a 2:1 margin. The SAI family also introduces SAIL, SAIF, and BSAI lock variants the SI lacked. Note that a plain cylinder drifts without live air; use an external rod lock or pilot check valve for load holding.
| Model | Airtac B06-SI Battery Dedicated ISO Standard Cylinder B06-SI40X50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B06-SAI40X50S |
| Bore size | Ø40 mm |
| Stroke | 50 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-SAI40X50S 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-SAI40X50S 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. |
| ×50 | 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 layers during cell stacking operations.
Transfers battery modules along the assembly line with a 50 mm stroke, utilizing the G1/4 port for rapid cycling.
Clamps battery tabs securely for laser welding, relying on the 32 kg vertical lift capacity with a 2:1 safety margin.
To replace the B06-SI40X50S, order the SAI40X50S. It drops into existing fixtures via the identical ISO 15552 mounting interface, matching the 40 mm bore, 50 mm stroke, G1/4 port, and M12x1.25 thread. Retain your mounting accessory (LB, FA, TC, etc.) and the -S magnet for CS1-B/DS1-B sensors. The SAI uses current AirTAC switches. For sizing both ways: a 32 mm bore offers 402 N push at 0.5 MPa, while a 50 mm bore yields 982 N. If you need load holding on air loss, step up to the SAIL or BSAI lock variant, or add a pilot check valve. The 50 mm stroke keeps side-load risks low, but always guide the rod for offset loads.
Replacement checklist
Yes, the B06-SI40X50S is discontinued. The exact drop-in replacement is the SAI40X50S. It shares the same ISO 15552 mounting interface, 40 mm bore, 50 mm stroke, output force, G1/4 port, and mounting accessories. The B06- prefix simply denotes the battery-manufacturing dedicated variant, and the SAI replacement is fully compatible.
The 40 mm bore features a G1/4 air port. Force ratings are: 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, and a theoretical max of 128 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 27 mm adjustable air cushion at both ends.
Send us the quantity and destination. We confirm price, stock and lead time on the B06-SAI40X50S replacement — usually within 7-8 hours.