This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X350, 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-SID32X350
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 350mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID32X350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke350 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X350
- 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-SID32X350
The AirTAC B04-SID32X350 is a 32mm bore, 350mm stroke double-acting double-rod ISO 15552 cylinder. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant, mechanically identical to the standard SID32X350. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways (345N @0.5MPa). It features a 12mm rod, M10x1.25 thread, and G1/8 port. This SID model is discontinued; the direct replacement is the SAID32X350, sharing the same interface, force, and mounting.
The SAI replacement family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Since this SKU lacks the -S magnet, it cannot take a magnetic switch. A plain cylinder does not hold loads on air loss; the air cushion only decelerates near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X350 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X350 |
| Bore size | Ø32 mm |
| Stroke | 350 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-SAID32X350 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-SAID32X350 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-SID32X350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×350 | 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-SID32X350 Is Used
Excavator Linkage
Equal both ways force drives dual-tool construction machinery attachments without push/pull mismatch.
Guide Alignment
The double-rod design prevents rotation, keeping heavy equipment panels aligned during actuation.
Material Transfer
The rear rod can mount a cam for non-contact tracking in dusty construction material handling.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X350 with the B04-SAID32X350
To replace the discontinued B04-SID32X350, order the SAID32X350 (insert A after S) for an exact ISO 15552 direct fit with equal both ways force. Size both ways by checking neighbor bores (40mm yields 528N @0.5MPa) if more force is needed. A double rod is right when you need anti-rotation, or when the back rod carries a sensor cam. Reuse FA, LB, or TC mounts. At 350mm stroke, use external guides to prevent rod bending and side loads. For load holding on air loss, use an external rod lock or SAIL/BSAI variant, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X350
- ✓ 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-SID32X350 FAQ
Yes, the B04-SID32X350 (construction-machinery dedicated variant of SID32X350) is discontinued. The direct replacement is the SAID32X350. It shares the same ISO 15552 interface, 32mm bore, 350mm stroke, G1/8 port, and equal both ways force. The SAI family also features an upgraded piston seal.
Force is equal both ways: 345N @0.5MPa, 483N @0.7MPa, and 621N @0.9MPa. Speed is 30-800mm/s. The cushion only decelerates; it does not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID32X350
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID32X350 replacement — usually within 7-8 hours.