This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID32X25 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID32X25 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-SID32X25
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 25mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID32X25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X25
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25
The AirTAC B04-SID32X25 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, meaning push and pull force are equal both ways (345 N @0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the base SID32X25, mechanically identical in bore, port, and stroke. This SID model is discontinued; the exact drop-in replacement is the SAID32X25, which reuses the same ISO 15552 mounting interface and G1/8 port.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. A double-rod design prevents rod rotation and lets the back rod carry a sensor cam, though this specific non-magnetic SKU cannot accept a switch. For sizing, the safe working load is ~207 N (60% of the 345 N @0.5 MPa figure), yielding a vertical lift capacity of ~18 kg with a 2:1 margin.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X25 |
| Bore size | Ø32 mm |
| Stroke | 25 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-SAID32X25 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-SAID32X25 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-SID32X25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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-SID32X25 Is Used
Excavator Panel Pusher
Drives an equal both-ways push and pull link in a heavy-equipment cabin panel actuator, using the double rod to prevent rotation during stroke.
Loader Linkage Stop
Provides a compact 25mm stroke limit with 345 N force at 0.5 MPa for a secondary mechanical stop on construction machinery loader arms.
Crane Valve Interlock
Uses the rear rod extension to mechanically confirm position on a crane hydraulic valve interlock, operating at 30-800 mm/s.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25 with the B04-SAID32X25
To replace the discontinued B04-SID32X25, specify the SAID32X25; it is a drop-in swap matching the 32mm bore, 25mm stroke, M10x1.25 rod thread, and G1/8 port. When sizing both ways, verify equal force at 345 N (@0.5 MPa) or step up to the 40mm bore if higher thrust is needed. Choose a double-rod cylinder when anti-rotation or driving two tools is required. Mounting uses Basic, FA, LB, or TC brackets. Because this SKU lacks the -S magnet, it cannot use sensors. For strokes over 300mm, account for side-load deflection. A plain cylinder does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X25
- ✓ 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-SID32X25 FAQ
Yes, the B04-SID32X25 is discontinued. The exact drop-in replacement is the SAID32X25. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SID32X25, and the SAID32X25 matches its ISO 15552 interface, 32mm bore, 25mm stroke, and G1/8 port.
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. The air port is G1/8. The safe working load is ~207 N, allowing a vertical lift of ~18 kg with a 2:1 margin.
Related AirTAC SAI Cylinders
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