This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X75S, 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-SID32X75S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 75mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID32X75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke75 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X75S
- 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-SID32X75S
The AirTAC B04-SID32X75S is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID32X75S. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 345 N @0.5 MPa. It features a 32 mm bore, 75 mm stroke, G1/8 port, and M10x1.25 rod thread. This SKU is discontinued and the direct replacement is the SAID32X75S, which retains the same interface and force.
The SAID upgrade uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For design gains, the back rod can carry a sensor cam to drive two tools simultaneously while reusing existing ISO 15552 mounting. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X75S |
| Bore size | Ø32 mm |
| Stroke | 75 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-SAID32X75S 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-SAID32X75S 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-SID32X75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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-SID32X75S Is Used
Excavator Valve Linkage
Equal both-ways force drives twin valve spools symmetrically on heavy-equipment hydraulic pilots, ensuring precise flow metering without rotational drift.
Loader Feed Gate
The back rod carries a sensor cam to confirm gate position on construction-machinery aggregate lines, while the front rod pushes material evenly.
Crusher Tool Actuation
Drives two opposing wear plates simultaneously in a rock crusher, utilising the equal push/pull force to maintain crushing pressure in both directions.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75S with the B04-SAID32X75S
To replace the discontinued B04-SID32X75S, specify the SAID32X75S directly—it is a direct match for bore, stroke, G1/8 port, and force. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools from one piston. Mounting options include Basic, FA, LB, and TC brackets. The -S magnet supports legacy CS1-B/DS1-B sensors. For stroke lengths >=300 mm, verify side-load guidance to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X75S
- ✓ 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-SID32X75S FAQ
Yes, the B04-SID32X75S (construction-machinery dedicated variant of SID32X75S) is discontinued. The direct replacement is the SAID32X75S, which matches the ISO 15552 interface, 32 mm bore, 75 mm stroke, G1/8 port, and force. The SAI family also adds SAIL and BSAI lock variants.
Force is equal both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Speed is 30-800 mm/s. Note that the air cushion only decelerates near stroke end; it does not hold the load on air loss, so use an external rod lock for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID32X75S
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID32X75S replacement — usually within 7-8 hours.