This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID32X125S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID32X125S 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-SID32X125S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125S 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-SAID32X125S, 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-SAID32X125S
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125S
The AirTAC B04-SID32X125S 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 a construction-machinery dedicated variant of the base SID32X125S, mechanically identical to it with a 32 mm bore, 125 mm stroke, and G1/8 port. This legacy SID model is discontinued, replaced directly by the SAID32X125S.
Because both faces use the rod-side area, the back rod can carry a sensor cam while preventing rotation. The drop-in SAID upgrade features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. 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-SID32X125S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X125S |
| 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-SAID32X125S 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-SAID32X125S 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-SID32X125S
| 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-SID32X125S Is Used
Excavator Panel Pusher
Drives an actuator panel on heavy equipment with equal push/pull force, preventing rod rotation during repetitive cycling.
Loader Linkage Index
Uses the rear rod extension to mount a sensor cam, tracking position on construction machinery without external trackers.
Crane Brake Lever
Shifts a heavy-equipment control lever where equal force both ways ensures consistent engagement and release.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X125S with the B04-SAID32X125S
To replace the discontinued B04-SID32X125S, use the SAID32X125S drop-in: it matches the 32 mm bore, 125 mm stroke, G1/8 port, M10x1.25 rod thread, and ISO 15552 mounting. Size both ways by checking neighbor bores to ensure the equal both ways force (345 N @0.5 MPa) meets your needs. A double rod is right when you need anti-rotation or a rear sensor cam. Mount via FA, LB, or TC brackets. The -S suffix means a magnet is present for CS1-B/DS1-B switches. For strokes >=300 mm, verify side-load limits.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X125S
- ✓ 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-SID32X125S FAQ
Yes, the B04-SID32X125S is discontinued. The exact drop-in replacement is the SAID32X125S. It shares the same ISO 15552 interface, 32 mm bore, 125 mm stroke, G1/8 port, and equal both ways force. The B04- prefix simply marks it as construction-machinery dedicated.
Force is equal both ways due to the double-rod design: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Speed is 30-800 mm/s. It operates at 0.15-1.0 MPa with a 27 mm adjustable cushion at each end. It does not hold loads without live air; use an external rod lock for holding.
Related AirTAC SAI Cylinders
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