This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X400 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X400 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-SID100X400
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X400
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400
The AirTAC B04-SID100X400 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID100X400, mechanically identical in every spec. 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, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It features a 100 mm bore, G1/2 port, M20x1.5 rod thread, and 36 mm adjustable air cushions. This SKU has no -S magnet and cannot take a magnetic switch.
This SID model is discontinued and superseded by the exact drop-in replacement SAID100X400, which shares the same ISO 15552 interface, bore, stroke, and mounting. The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For sizing, the computed buyer insight from the 3681 N @0.5 MPa figure yields a safe working load of roughly 2209 N and a vertical lift capacity of about 188 kg with a 2:1 margin. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X400 |
| Bore size | Ø100 mm |
| Stroke | 400 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-SAID100X400 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-SAID100X400 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-SID100X400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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-SID100X400 Is Used
Excavator Boom Control
Uses the equal both ways force of the B04-SID100X400 to actuate heavy boom linkages on construction machinery, where the double rod prevents rotational drift during extension and retraction.
Crane Load Stabilizer
Employs the back rod end to drive a secondary stabilizer arm simultaneously, leveraging the 3681 N @0.5 MPa force and G1/2 port for robust heavy-equipment positioning.
Paving Machine Screed Adjuster
Adjusts screed height on road paving equipment where the 400 mm stroke requires external guides to handle side-load, utilizing the M20x1.5 rod thread for heavy mounting.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400 with the B04-SAID100X400
To replace the discontinued B04-SID100X400, specify the drop-in SAID100X400, reusing the existing ISO 15552 mounting hardware (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both ways by verifying the equal force fits your application, or step to neighbor bores 80 mm or 125 mm if a different capacity is needed. A double rod is right when you need anti-rotation, a back rod to carry a sensor cam, or to drive two tools. Because this SKU lacks the -S magnet, it cannot support sensing; if needed, select a -S model. For the 400 mm stroke, add external guides to prevent rod-bending under side-load. Finally, since air cushions only decelerate, use an external rod lock or SAIL/BSAI variant for load-holding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X400
- ✓ 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-SID100X400 FAQ
Yes, the B04-SID100X400 (construction-machinery dedicated SID100X400) is discontinued. The exact drop-in replacement is the SAID100X400. It shares the same ISO 15552 interface, 100 mm bore, 400 mm stroke, G1/2 port, and equal both ways force. The SAI family also adds upgraded piston seals and SAIL/BSAI lock variants the SI line lacked.
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 rod thread is M20x1.5, and it has 36 mm adjustable cushions. It operates at 0.15-1.0 MPa with speeds of 30-800 mm/s. The safe working load is ~2209 N, yielding a ~188 kg vertical lift with a 2:1 margin.
Related AirTAC SAI Cylinders
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