This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X75, 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-SID32X75
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75 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-SAID32X75, 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-SAID32X75
- 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-SID32X75
The AirTAC B04-SID32X75 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 base SID32X75, mechanically identical with a 32 mm bore, 75 mm stroke, G1/8 port, and M10x1.25 rod thread. Because the SID line is discontinued, the direct replacement is the SAID32X75, which reuses the same ISO 15552 mounting interface and adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
A key benefit of the dual-rod layout is anti-rotation stability, allowing the back rod to carry a sensor cam or drive two tools simultaneously—though this specific non-magnetic SKU cannot hold a switch. Note that air cushions only decelerate the piston near stroke end; for load-holding on air loss, an external rod lock or pilot-operated check valve is required.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X75 |
| 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-SAID32X75 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-SAID32X75 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-SID32X75
| 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-SID32X75 Is Used
Excavator Linkage
Provides equal push and pull force for compact actuation on heavy-equipment control linkages where anti-rotation stability is critical.
Crane Load Gate
Drives two synchronized mechanisms from one piston, ideal for construction-machinery load gates requiring symmetrical movement.
Loader Tooling
Handles rapid tool changes on construction loaders, using the back rod for cam-driven positioning without sensor mounts.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X75 with the B04-SAID32X75
To replace the discontinued B04-SID32X75, specify the SAID32X75, which matches the 32 mm bore, 75 mm stroke, G1/8 port, and 345 N equal-both-ways force. When sizing both ways, verify if neighbouring bores (like the 40 mm at 528 N @0.5 MPa) offer better margin, but the 32 mm is ideal for compact setups. Choose a double-rod cylinder when anti-rotation resistance or symmetrical drive is needed. Mounting options include Basic, FA, LB, and TC brackets. As this SKU lacks the -S magnet, it cannot support magnetic sensing. For strokes >=300 mm, ensure adequate side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X75
- ✓ 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-SID32X75 FAQ
Yes, the B04-SID32X75 is discontinued. The direct replacement is the SAID32X75. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SID32X75, so the SAID32X75 matches its 32 mm bore, 75 mm stroke, G1/8 port, and ISO 15552 mounting exactly.
It features a G1/8 air port and generates equal force both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. It operates at 30-800 mm/s and lacks a magnet for sensing.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID32X75
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID32X75 replacement — usually within 7-8 hours.