This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X250S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X250S 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-SID100X250S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X250S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X250S
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250S
The AirTAC B04-SID100X250S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, generating equal force in both directions (3681 N at 0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant, mechanically identical to the base SID100X250S. Because the original SID line is discontinued, the direct drop-in replacement is the SAID100X250S, which reuses the exact same ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread.
The SAI upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Beyond equal both-ways force preventing rod drift, the rear rod can mount a sensor cam to drive two tools simultaneously. For sizing, the safe working load is roughly 2209 N (60% of the 0.5 MPa force), allowing a vertical lift of about 188 kg with a 2:1 margin. Note that air cushions only decelerate; an external rod lock is needed to hold loads on air loss.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X250S |
| Bore size | Ø100 mm |
| Stroke | 250 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-SAID100X250S 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-SAID100X250S 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-SID100X250S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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-SID100X250S Is Used
Excavator Linkage Control
Drives dual-tool mechanisms on heavy equipment with equal push and pull force, leveraging the robust 100mm bore to handle high-stress construction cycles.
Loader Attachment Actuation
Uses the rear rod extension to mount a sensor cam, providing precise position feedback for attachment tilt functions without adding external brackets.
Crane Boom Alignment
Prevents rod rotation during boom extension and retraction, ensuring structural alignment in demanding construction-machinery environments.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250S with the B04-SAID100X250S
To replace the discontinued B04-SID100X250S, use the SAID100X250S, which matches the 100mm bore, 250mm stroke, G1/2 port, and 3681 N equal-both-ways force. Choose a double-rod cylinder when you need anti-rotation stability or equal push/pull power. Neighboring bores (80mm or 125mm) offer different force profiles if your payload changes. Reuse existing FA, LB, or TC mounts since the ISO 15552 interface is unchanged. The -S suffix means a piston magnet is present for CS1-B/DS1-B sensors. For strokes >=300mm, ensure adequate side-load guidance to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X250S
- ✓ 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-SID100X250S FAQ
Yes, the SID line is discontinued. The exact drop-in replacement is the SAID100X250S. The B04- prefix simply denotes the construction-machinery dedicated variant, so the replacement matches the 100mm bore, 250mm stroke, G1/2 port, and ISO 15552 mounting exactly.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The G1/2 port and 25mm rod allow speeds of 30-800 mm/s. It operates between 0.15-1.0 MPa. Remember, air cushions only decelerate; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
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