This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X150S, 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-SID32X150S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 150mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID32X150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X150S
- 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-SID32X150S
The AirTAC B04-SID32X150S 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 designates this as a construction-machinery dedicated variant of the base SID32X150S, mechanically identical to the standard model with a 32 mm bore, 150 mm stroke, and G1/8 port. This SID series is discontinued, and the direct replacement is the SAID32X150S, 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, the push and pull force is identical, offering superior anti-rotation stability and allowing the back rod to drive a secondary tool or carry a sensor cam. The built-in piston magnet (-S) supports legacy CS1-B/DS1-B switches. Note that a plain cylinder does not hold loads on air loss; the adjustable 27 mm cushions only decelerate near stroke end, so use an external rod lock for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X150S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X150S |
| Bore size | Ø32 mm |
| Stroke | 150 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-SAID32X150S 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-SAID32X150S 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-SID32X150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×150 | 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-SID32X150S Is Used
Excavator Linkage
Drives synchronized secondary actuators on heavy-equipment cabs where the B04- construction-machinery prefix ensures fitment, using the back rod for a mirror motion cam.
Crane Gripper Arms
Powers dual-tool gripper arms on material handlers, benefiting from equal both-ways force to maintain balanced clamping pressure without twist.
Loader Guide Rails
Actuates alignment slides on loader frames, leveraging the double-rod geometry for high anti-rotation resistance during rough-terrain vibration.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X150S with the B04-SAID32X150S
To replace the discontinued B04-SID32X150S, select the SAID32X150S, which preserves the 32 mm bore, 150 mm stroke, G1/8 port, and M10x1.25 rod thread. Size both ways by confirming the equal-both-ways force fits your needs: 345 N @0.5 MPa, 483 N @0.7 MPa, or 621 N @0.9 MPa. If higher force is required, step up to the neighboring 40 mm bore. A double-rod design is right when you need anti-rotation resistance or must drive two tools simultaneously. Mounting options include Basic, FA, LB, and TC (no FB/CA/CB/CR). The -S suffix ensures piston magnet presence for sensors. For strokes of 300 mm or longer, verify side-load limits to prevent guide bushing wear.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X150S
- ✓ 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-SID32X150S FAQ
Yes, the SID series is discontinued. The direct replacement is the SAID32X150S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SID32X150S; mechanically, all specs (bore, stroke, G1/8 port, force) are identical. The SAID upgrade adds an improved piston seal and reuses the ISO 15552 mounting.
Force is equal both ways because both piston faces use the rod-side area: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The speed range is 30-800 mm/s. It features a G1/8 port, M10x1.25 rod thread, and 27 mm adjustable cushions at each end.
Related AirTAC SAI Cylinders
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