This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X300 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X300 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-SID100X300
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X300, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X300
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300
The B04-SID100X300 is AirTAC's construction-machinery dedicated variant of the ISO 15552 double-rod cylinder. The B04- prefix denotes an industry-specific designation only; mechanically, it is identical to the base SID100X300. Because a rod exits both ends on one piston, both faces use the rod-side area, meaning push and pull force are equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It features a 100mm bore, G1/2 port, M20x1.5 rod thread, and 36mm adjustable cushions.
This SID model is discontinued and the exact drop-in replacement is the SAID100X300, which reuses the same ISO 15552 mounting interface, bore, and stroke. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet (-S) and cannot take a sensor. A plain cylinder does not hold loads on air loss; the cushion only decelerates. For held loads use an external rod lock or SAIL/BSAI variant. Computed buyer insight: safe working load is ~2209 N (60% of 3681 N), yielding a ~188 kg vertical lift with a 2:1 margin.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X300 |
| Bore size | Ø100 mm |
| Stroke | 300 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-SAID100X300 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-SAID100X300 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-SID100X300
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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-SID100X300 Is Used
Excavator Linkage Control
Equal push and pull force on heavy equipment arms provides balanced actuation without needing a larger bore for the return stroke.
Mast Lifting Mechanism
The double-rod design prevents rotation during vertical lift, ensuring stable fork carriage alignment under varying loads.
Crane Outrigger Locking
Drives dual locking pins simultaneously from one cylinder, using the back rod for a secondary mechanism while maintaining equal force.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300 with the B04-SAID100X300
To replace the discontinued B04-SID100X300, use the SAID100X300. It is a true drop-in fit: same 100mm bore, 300mm stroke, G1/2 port, and ISO 15552 mounting (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both ways by checking neighbour bores if you need more or less equal-both-ways force. Choose a double-rod cylinder when you need anti-rotation, to drive two tools, or when the back rod carries a sensor cam. Since this SKU has no -S magnet, it cannot use magnetic switches. For this 300mm stroke, add external guides to prevent rod bending and side-load damage. Speed is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X300
- ✓ 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-SID100X300 FAQ
Yes, the B04-SID100X300 (construction-machinery dedicated variant of SID100X300) is discontinued. The exact drop-in replacement is the SAID100X300. It shares the same ISO 15552 interface, 100mm bore, 300mm stroke, G1/2 port, and equal both-ways force. The B04- prefix was an industry designation only and does not change the physical specs.
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 ~2209 N (60% of the 0.5 MPa figure), allowing a ~188 kg vertical lift with a 2:1 margin. It operates at 0.15-1.0 MPa with a 36mm adjustable cushion.
Related AirTAC SAI Cylinders
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