This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAI63X100 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAI63X100 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-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100
The AirTAC Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 100mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAI63X100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke100 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAI63X100
About the Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100
The AirTAC B04-SI63X100 is a discontinued double-acting ISO 15552 profile cylinder. The B04- prefix marks it as the construction-machinery dedicated variant of the SI63X100, mechanically identical to the base model with a 63mm bore, 100mm stroke, G3/8 port, and 1559 N push force at 0.5 MPa. AirTAC replaced this EOL unit with the SAI63X100, a true drop-in sharing the same ISO 15552 mounting interface, output force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This plain SKU lacks a magnet, so it cannot accept a sensor. For safe sizing, expect a working load around 935 N (60% of the 0.5 MPa push force) or a 79 kg vertical lift with a 2:1 margin. Note that a standard cylinder drifts on air loss; for load holding, use the SAIL or BSAI lock variants.
Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100 Technical Specifications
| Model | Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAI63X100 |
| Bore size | Ø63 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAI63X100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The B04-SAI63X100 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-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×100 | 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-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100 Is Used
Excavator Actuation
Drives auxiliary mechanisms on heavy equipment where the 1559 N push force at 0.5 MPa handles robust shifting of linkage covers or service panels.
Loader Linkage
Provides 100mm stroke for secondary positioning tasks on construction loaders, utilizing the G3/8 port for high-flow pneumatic response.
Heavy-Equipment Latches
Actuates heavy-duty latches and bin locks on site machinery, offering a safe working load around 935 N for reliable field operation.
Replacing the Airtac B04-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100 with the B04-SAI63X100
To replace the B04-SI63X100, order the SAI63X100 drop-in. It matches the ISO 15552 mounting interface, 63mm bore, 100mm stroke, G3/8 port (PT/G/NPT thread options), and M16x1.5 rod thread. Because this SKU lacks the -S magnet, it cannot support position sensing; if detection is needed, select an SAI63X100S and use current AirTAC switches. If sizing up or down, neighbor bores are 50mm (982 N push @0.5 MPa) and 80mm (2513 N push @0.5 MPa). A plain cylinder does not hold load without live air; for construction-machinery lifting, consider the SAIL air-released lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAI63X100
- ✓ 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-SI Construction Machinery Special ISO Standard Cylinder B04-SI63X100 FAQ
Yes, the B04-SI63X100 (the construction-machinery dedicated variant of SI63X100) is discontinued. The exact drop-in replacement is the SAI63X100. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 100mm stroke, G3/8 port, and mounting hardware exactly.
The 63mm bore uses a G3/8 air port. Force output is 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, and a theoretical max of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAI63X100
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