This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAI100X150 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAI100X150 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.
Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150
The AirTAC Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAI100X150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAI100X150
About the Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150
The AirTAC B04-SI100X150 is a discontinued double-acting ISO 15552 profile cylinder. The B04- prefix marks it as the construction-machinery dedicated variant of the SI100X150, mechanically identical to the base model. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X150.
The SAI100X150 is a true drop-in replacement sharing the exact ISO 15552 mounting interface, 150 mm stroke, and force. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure. With a safe working load around 2356 N (60% of the 0.5 MPa push), it lifts roughly 200 kg vertically. Note this no-S SKU lacks a magnet and cannot take a sensor.
Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150 Technical Specifications
| Model | Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAI100X150 |
| Bore size | Ø100 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAI100X150 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The B04-SAI100X150 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.
Model Code: Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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).
Where the Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150 Is Used
Excavator Actuation
Drives secondary auxiliary mechanisms on heavy equipment where the B04- prefix indicates construction-machinery dedication, utilizing the 3927 N push force for robust positioning.
Heavy Fixture Clamping
Secures large structural components during machining or welding, leveraging the 3681 N pull force at 0.5 MPa to hold rigid workpieces firmly in place.
Concrete Plant Gates
Operates heavy discharge gates or batching valves in dusty aggregate environments, relying on the durable ISO 15552 profile barrel and adjustable end cushions.
Replacing the Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150 with the B04-SAI100X150
To replace the B04-SI100X150, order the SAI100X150. Verify the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port, and the 150 mm stroke. Because this no-S SKU lacks a magnet, it cannot accept CS1-B/DS1-B switches; if sensing is needed, order an SAI100X150S. For sizing, neighboring bores (80mm or 125mm) offer different footprints, but the 100mm bore yields 3927 N push at 0.5 MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option (bores 32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAI100X150
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI100X150 FAQ
Yes, the B04-SI100X150 is discontinued. The exact drop-in replacement is the SAI100X150. It shares the identical ISO 15552 mounting interface, bore, stroke, force, and G1/2 port. The B04- prefix simply marked it as construction-machinery dedicated; the SAI replacement matches all physical specs.
This 100mm bore cylinder features a G1/2 air port and an M20x1.5 rod thread. It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
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