This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X350 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X350 in place of this model. 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-SID100X350
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 350mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X350
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X350
The B04-SID100X350 is a construction-machinery dedicated double-rod ISO 15552 cylinder; the B04- prefix denotes an industry designation that is mechanically identical to the base SID100X350. A rod exits both ends on one piston, meaning both faces use the rod-side area to deliver equal push and pull force. This SKU is discontinued and drops in directly to the SAID100X350, which retains the G1/2 port, M20x1.5 rod thread, and 36 mm adjustable cushions.
The SAI replacement features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. Because this unit lacks the -S suffix, it has no magnet and cannot accept a sensor. Based on the 3681 N force at 0.5 MPa, the safe working load is roughly 2209 N, translating to a vertical lift of about 188 kg with a 2:1 margin. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variant.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X350 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X350 |
| Bore size | Ø100 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID100X350 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The B04-SAID100X350 produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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-SID100X350 Is Used
Excavator Linkage
Equal both-ways force drives dual-tool linkage on heavy equipment without the rotational drift seen in single-rod units.
Loader Boom Control
The double-rod design provides stable, anti-rotation actuation for synchronized boom positioning in tight construction envelopes.
Crane Extension Lock
Drives two opposing cam mechanisms simultaneously from one piston, ensuring balanced load engagement on site.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X350 with the B04-SAID100X350
To replace the discontinued B04-SID100X350, use the SAID100X350 drop-in, keeping the exact ISO 15552 mounting interface, 100 mm bore, and 350 mm stroke. Size both ways by verifying the equal force requirement: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. If you need slightly less force, step down to the 80 mm bore (2268 N at 0.5 MPa); for more, step up to 125 mm (5734 N). A double rod is right when you need anti-rotation, to drive two tools, or to mount a sensor cam on the back rod. Reuse FA, LB, or TC mounts. For the 350 mm stroke, add external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X350
- ✓ 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-SID100X350 FAQ
Yes, the B04-SID100X350 (construction-machinery dedicated variant of SID100X350) is discontinued. The exact drop-in replacement is the SAID100X350. It shares the same ISO 15552 interface, bore, stroke, G1/2 port, and mounting, but adds an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. The air port is G1/2. The safe working load is about 2209 N (60% of the 0.5 MPa figure).
Related AirTAC SAI Cylinders
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