This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X50S 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-SID100X50S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X50S
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50S
The AirTAC B04-SID100X50S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 3681 N @0.5 MPa. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant; mechanically it is identical to the base SID100X50S, retaining the 100mm bore, G1/2 port, and M20x1.5 rod thread. This legacy model is discontinued and is directly replaced by the SAID100X50S.
The SAID drop-in replacement shares the exact ISO 15552 mounting interface, bore, stroke, and adjustable 36mm cushions, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Because both faces use the rod-side area, force is equal both ways (3681/5153/6626 N at 0.5/0.7/0.9 MPa). The dual rods prevent rotation and allow the back rod to drive a second tool or carry a sensor cam. For sizing, the safe working load is roughly 2209 N (60% of the 0.5 MPa force), yielding a vertical lift capacity of about 188 kg with a 2:1 margin.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X50S |
| Bore size | Ø100 mm |
| Stroke | 50 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-SAID100X50S 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-SAID100X50S 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-SID100X50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50S Is Used
Excavator Linkage Actuation
Drives synchronized secondary tooling on heavy equipment where the equal both-ways force and anti-rotation rigidity of the dual rods handle high side-loads without binding.
Crusher Blockage Clearing
Uses both extending and retracting strokes to push and pull obstruction rods in aggregate machinery, benefiting from the 3681 N equal force in both directions.
Loader Attachment Sync
The rear rod simultaneously operates a diverter valve cam while the front rod moves the primary attachment, keeping construction machinery motions phase-aligned.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50S with the B04-SAID100X50S
To replace the discontinued B04-SID100X50S, specify the SAID100X50S, which is a true drop-in upgrade retaining the ISO 15552 mounting interface, G1/2 port, and 50mm stroke. Size both ways by confirming the 3681 N equal force is sufficient, or step to neighbouring bores. A double-rod design is right when you need anti-rotation rigidity or two synchronized working ends. Reuse FA, LB, or TC mounts. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. For this 50mm stroke side-load is minimal, but for strokes >=300mm ensure guide alignment to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X50S
- ✓ 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-SID100X50S FAQ
Yes, the B04-SID100X50S (AirTAC's construction-machinery dedicated variant of the SID100X50S) is discontinued. The exact drop-in replacement is the SAID100X50S. It shares the identical ISO 15552 mounting interface, bore, stroke, G1/2 port, and force, but uses an upgraded two Y-shaped one-way piston seal for longer life.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The safe working load is ~2209 N (60% of the 0.5 MPa figure), allowing a vertical lift of ~188 kg with a 2:1 margin. A plain cylinder does not hold loads on air loss; the cushion only decelerates. For held loads, use an external rod lock or the SAIL/BSAI lock variant.
Related AirTAC SAI Cylinders
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