This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X300S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X300S 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-SID100X300S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X300S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X300S
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300S
The AirTAC B04-SID100X300S is a discontinued double-acting double-rod ISO 15552 cylinder. The B04- prefix marks it as a construction-machinery dedicated variant, mechanically identical to the base SID100X300S. Because a rod exits both ends, push and pull force are equal both ways (3681 N at 0.5 MPa). The drop-in replacement is the SAID100X300S, which reuses the exact G1/2 port, M20x1.5 rod thread, and ISO 15552 mounting interface.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. This double-rod design prevents rotation and lets the back rod carry a sensor cam. Safe working load is about 2209 N (60% of the 0.5 MPa force), yielding a 188 kg vertical lift with a 2:1 margin. Note that air cushions only decelerate; use an external rod lock or SAIL/BSAI variant for load holding.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X300S |
| Bore size | Ø100 mm |
| Stroke | 300 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-SAID100X300S 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-SAID100X300S 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-SID100X300S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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-SID100X300S Is Used
Excavator Linkage
Drives dual-tool mechanisms on heavy equipment where equal push and pull force is required for balanced actuation in tight construction-machinery envelopes.
Loader Attachment
Anti-rotation double-rod design stabilizes grapples and buckets, using the back rod to carry a sensor cam for precise position feedback.
Crane Mechanism
Provides synchronized motion for heavy-duty positioning, ensuring the G1/2 port and ISO 15552 interface integrate seamlessly into existing mounts.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X300S with the B04-SAID100X300S
Replace the B04-SID100X300S directly with the SAID100X300S, maintaining the 100 mm bore, 300 mm stroke, and ISO 15552 mounting footprint (Basic, FA, LB, TC). The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. Size both ways by checking neighbor bores (80 mm or 125 mm) to ensure the equal both-ways force fits your construction-machinery layout. For this 300 mm stroke, add external guides to prevent rod bending under side loads. The SAI family adds SAIF and BSAI variants if you need integrated valves or clamp locks.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X300S
- ✓ 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-SID100X300S FAQ
Yes, the B04-SID100X300S (construction-machinery dedicated variant of SID100X300S) is discontinued. The exact drop-in replacement is the SAID100X300S, sharing the same ISO 15552 interface, bore, stroke, and force.
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 bore is 100 mm with a G1/2 port, M20x1.5 rod thread, and 36 mm adjustable cushions. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID100X300S
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID100X300S replacement — usually within 7-8 hours.