This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X400S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X400S 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-SID100X400S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400S 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-SAID100X400S, 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-SAID100X400S
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400S
The AirTAC B04-SID100X400S is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as a construction-machinery dedicated variant, mechanically identical to the standard SID100X400S. A rod exits both ends of the extruded aluminum barrel, meaning both faces use the rod-side piston area and push/pull force is equal both ways (3681 N at 0.5 MPa). It features a 25 mm rod, M20x1.5 rod thread, and a G1/2 air port. This SID model is discontinued and the exact drop-in replacement is the SAID100X400S.
The SAID upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life, while keeping the ISO 15552 interface, bore, stroke, and force identical. Because force is equal both directions, the back rod can drive a second tool or carry a sensor cam without force loss. Computed buyer insight: safe working load is roughly 2209 N (60% of the 3681 N @0.5 MPa figure), and vertical lift capacity is about 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 the SAIL/BSAI lock variants.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X400S |
| 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-SAID100X400S 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-SAID100X400S 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-SID100X400S
| 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-SID100X400S Is Used
Excavator Actuation
Drives heavy equal-force push/pull mechanisms on construction machinery where the B04- prefix indicates dedicated heavy-equipment integration.
Material Transfer
Simultaneously drives two linked conveyor diverter arms from opposite rod ends, ensuring perfectly synchronized movement without force differential.
Cam-Driven Sensing
Uses the extended back rod to carry a sensor cam for position feedback, while the front rod performs the primary work at full equal force.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X400S with the B04-SAID100X400S
To replace the discontinued B04-SID100X400S, select the SAID100X400S, which is a true drop-in upgrade retaining the G1/2 port, M20x1.5 thread, and ISO 15552 mounting dimensions (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both directions by checking the equal-both-ways force: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. If neighboring bores are considered, the 80 mm bore yields 2268 N at 0.5 MPa, while the 125 mm bore yields 5734 N. A double-rod design is right when you need anti-rotation, equal push/pull, or a back rod for a sensor cam. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. For this 400 mm stroke, external guides are recommended to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X400S
- ✓ 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-SID100X400S FAQ
Yes, the SID line is discontinued. The exact drop-in replacement is the SAID100X400S. The B04- prefix only denotes the construction-machinery dedicated variant, so the SAID replacement matches the 100 mm bore, 400 mm stroke, G1/2 port, and ISO 15552 mounting exactly, while adding an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. The G1/2 ported cylinder operates at 30-800 mm/s. The air cushion is 36 mm at each end and only decelerates the load; it does not hold the load on air loss.
Related AirTAC SAI Cylinders
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