This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X25S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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-SID32X25S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25S 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 direct replacement is the B04-SAID32X25S, 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-SAID32X25S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25S
The AirTAC B04-SID32X25S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring force is equal both ways (345 N at 0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant of the base SID32X25S; mechanically, every spec matches the standard model exactly. This discontinued unit features a 32 mm bore, G1/8 port, M10x1.25 rod thread, and 27 mm adjustable cushions. The direct replacement is the SAID32X25S, which reuses the exact ISO 15552 mounting interface and adds an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and longer life.
Because both faces use the rod-side area, push and pull forces are identical, preventing single-rod push mismatches. The second rod can drive two tools simultaneously or carry a sensor cam for precise positioning. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end. For held loads, use an external rod lock or the SAIL/BSAI lock variants.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X25S |
| 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-SAID32X25S 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-SAID32X25S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25S
| 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-SID32X25S Is Used
Excavator Linkage Control
Equal push/pull force actuates secondary hydraulic covers or locking pins on heavy equipment, where the B04- prefix indicates construction-machinery dedication.
Dual-Tool Material Handling
The second rod drives a synchronized gripper or pusher on the opposite end, allowing compact transfer stations without external linkages.
Anti-Rotation Guide Plate
Double-rod geometry prevents piston rotation during precise plate positioning on heavy machinery, ensuring accurate alignment without external guides.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X25S with the B04-SAID32X25S
To replace the discontinued B04-SID32X25S, specify the SAID32X25S—a direct upgrade retaining the 32 mm bore, 25 mm stroke, G1/8 port, and equal-both-ways force. Size both directions by verifying the 345 N (@0.5 MPa) capacity fits your load, or step up to the 40 mm bore (528 N) if higher force is needed. A double rod is right when you need anti-rotation resistance, dual tool driving, or a back-side sensor cam. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAI uses current switches). For strokes >=300 mm, ensure adequate side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X25S
- ✓ 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-SID32X25S FAQ
Yes, the B04-SID32X25S is discontinued. The direct replacement is the SAID32X25S. The B04- prefix simply denotes the construction-machinery dedicated variant; mechanically, it is identical to the standard SID32X25S. The SAID replacement shares the same ISO 15552 interface, 32 mm bore, 25 mm stroke, and G1/8 port, while adding an upgraded piston seal.
As a double-rod cylinder, force is equal both ways: 345 N at 0.5 MPa, 483 N at 0.7 MPa, and 621 N at 0.9 MPa. The bore is 32 mm with a G1/8 air port, a 12 mm rod, and an M10x1.25 rod thread. Operating pressure is 0.15-1.0 MPa, with a speed range of 30-800 mm/s.
Related AirTAC SAI Cylinders
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