This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X450 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X450 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-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 450mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X450, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X450
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450
The AirTAC B04-SID100X450 is a discontinued double-acting double-rod ISO 15552 cylinder where the B04- prefix marks it as a construction-machinery dedicated variant, mechanically identical to the standard SID100X450. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways at 3681 N @0.5 MPa. The drop-in replacement is the SAID100X450, matching the 100mm bore, 450mm stroke, G1/2 port, and mounting interface exactly.
The SAI replacement family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this SKU lacks a -S magnet, it cannot take a magnetic switch. For sizing, the equal-both-ways force yields a safe working load of about 2209 N (60% of the 3681 N @0.5 figure) and a vertical lift capacity of roughly 188 kg with a 2:1 margin. Note that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or pilot-operated check valve.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X450 |
| Bore size | Ø100 mm |
| Stroke | 450 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-SAID100X450 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-SAID100X450 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-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450 Is Used
Excavator Linkage Control
Drives dual-tool mechanisms on heavy equipment with equal push and pull force, utilizing the robust G1/2 port and ISO 15552 mounting for construction machinery integration.
Crusher Feed Gate
Operates heavy aggregate gates where anti-rotation stability from the double-rod design prevents binding, handling safe working loads up to 2209 N reliably.
Loader Boom Sync
Synchronizes dual boom arms using both extending rods, delivering 188 kg vertical lift capacity with a 2:1 margin for demanding earthmoving cycles.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450 with the B04-SAID100X450
To replace the discontinued B04-SID100X450, select the SAID100X450, which drops directly into the existing ISO 15552 mounting footprint (Basic, FA, LB, TC) without changes. Size both ways by verifying the equal push/pull force of 3681 N @0.5 MPa meets your requirement, or step to neighbor bores (80mm or 125mm) if more or less force is needed. A double-rod design is right when you need anti-rotation stability or must drive two tools from one piston. For the 450mm stroke, add external guides to prevent rod-bending under side loads. This non-magnetic SKU cannot use sensors; if sensing is needed, specify a -S magnet model.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X450
- ✓ 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-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X450 FAQ
Yes, the B04-SID100X450 is discontinued. The exact drop-in replacement is the SAID100X450. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SID100X450. The SAID replacement shares the exact same ISO 15552 interface, 100mm bore, 450mm stroke, G1/2 port, and equal-both-ways force.
Because it is a double-rod cylinder, force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The air port is G1/2. The safe working load is approximately 2209 N (60% of the 0.5 MPa rating). Remember that air cushions only decelerate the piston near stroke end; they do not hold loads on air loss.
Related AirTAC SAI Cylinders
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