This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID32X250 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID32X250 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-SID32X250
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID32X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X250
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X250
The AirTAC B04-SID32X250 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The B04- prefix marks this as the construction-machinery dedicated variant of the base SID32X250, mechanically identical with a 32 mm bore, 250 mm stroke, G1/8 port, and M10x1.25 rod thread. This legacy model is discontinued.
The direct drop-in replacement is the SAID32X250, which reuses the exact ISO 15552 mounting interface and adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Because the second rod acts as an anti-rotation guide and can drive a second tool, it is ideal for heavy equipment. Computed buyer insight: safe working load is ~207 N (60% of 345 N), allowing a vertical lift of ~18 kg with a 2:1 margin.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X250 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X250 |
| Bore size | Ø32 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID32X250 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The B04-SAID32X250 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-SID32X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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-SID32X250 Is Used
Excavator Linkage
Equal both-ways force and anti-rotation stability serve compact hydraulic-pneumatic pilot controls on construction machinery.
Crusher Gate
The second rod drives a synchronized dust flap while the primary rod shifts the aggregate diverter gate in heavy equipment.
Loader Panel
Provides balanced push and pull to actuate thick steel access panels on fixed crushing plants without twisting the mount.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X250 with the B04-SAID32X250
To replace the discontinued B04-SID32X250, use the SAID32X250; it is a drop-in swap retaining the 32 mm bore, 250 mm stroke, G1/8 port, and ISO 15552 mounting. Size both ways by checking the equal push/pull force against your load, stepping to a 40 mm bore if 345 N @0.5 MPa is insufficient. Choose a double-rod design when you need anti-rotation resistance or must drive two mechanisms simultaneously. Mounting options include Basic, FA, LB, and TC. This SKU lacks the -S magnet and cannot take a sensor. For strokes >=300 mm, ensure proper side-load guidance. The air cushion only decelerates; it does not hold loads on air loss, so use an external rod lock for vertical holding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X250
- ✓ 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-SID32X250 FAQ
Yes, the B04-SID32X250 is discontinued. The exact drop-in replacement is the SAID32X250. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SID32X250, so all specs match. The SAID keeps the ISO 15552 interface, G1/8 port, and adds an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Speed is 30-800 mm/s. The safe working load is ~207 N, allowing an 18 kg vertical lift with a 2:1 margin. The air cushion only decelerates; it will not hold a load without live air.
Related AirTAC SAI Cylinders
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