This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID32X125 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID32X125 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-SID32X125
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 125mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID32X125, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X125
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125
The AirTAC B04-SID32X125 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. The B04- prefix marks this as the construction-machinery dedicated variant of the SID32X125, mechanically identical to the base model with a G1/8 port and M10x1.25 rod thread. This SKU is discontinued and the direct drop-in replacement is the SAID32X125, which reuses the exact ISO 15552 mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side area, force is equal both ways (345/483/621 N at 0.5/0.7/0.9 MPa). The dual rods prevent rotation and allow driving two tools simultaneously. This non-magnet version cannot accept sensors. Computed buyer insight: 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. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X125 |
| Bore size | Ø32 mm |
| Stroke | 125 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-SAID32X125 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-SAID32X125 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-SID32X125
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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-SID32X125 Is Used
Excavator Linkage
Synchronizes dual covers on heavy-equipment hydraulic reservoirs using equal both-ways force and anti-rotation rods.
Crusher Feed Gate
Drives opposing material flow gates simultaneously from one piston, ensuring balanced flow on construction sites.
Sliding Cab Door
Actuates heavy-equipment cab doors where equal push/pull force and rigid anti-rotation control are required.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125 with the B04-SAID32X125
To replace the discontinued B04-SID32X125, install the drop-in SAID32X125—same 32 mm bore, 125 mm stroke, G1/8 port, and ISO 15552 mounting. Size both ways by verifying equal push/pull force (345 N @0.5 MPa); if more force is needed, step up to the 40 mm bore (528 N @0.5 MPa). A double-rod cylinder is right when you need anti-rotation rigidity or must drive two mechanisms. Mount using FA, LB, or TC brackets. This SKU lacks the -S magnet, so it cannot use sensors. For strokes >=300 mm, ensure side-load alignment to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X125
- ✓ 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-SID32X125 FAQ
Yes, the B04-SID32X125 (construction-machinery dedicated SID32X125) is discontinued. The exact drop-in replacement is the SAID32X125, sharing the same 32 mm bore, 125 mm stroke, G1/8 port, and ISO 15552 mounting.
Force is equal both ways at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The bore is 32 mm with a G1/8 air port, M10x1.25 rod thread, and 27 mm adjustable cushions. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID32X125
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID32X125 replacement — usually within 7-8 hours.