This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAIJ80X150-100S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAIJ80X150-100S 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-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S
The AirTAC Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAIJ80X150-100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAIJ80X150-100S
About the Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S
The AirTAC B04-SIJ80X150-100S is a double-acting single-rod adjustable-stroke ISO 15552 cylinder where the leading B04- prefix marks it as the construction-machinery dedicated variant of the base SIJ80X150-100S, mechanically identical to the standard line. An external stop screw allows you to trim the extend stroke by up to 100 mm on-site, yielding a usable extend range of 50-150 mm. The 80 mm bore features a 25 mm carbon/SUS420J2/SUS304 rod, an M20x1.5 rod-end thread, a G3/8 port, and 36 mm adjustable air cushions at each end. This discontinued model delivers 2513 N push and 2268 N pull at 0.5 MPa, with a theoretical maximum of 513 kgf at 1.0 MPa.
As the SIJ family is discontinued, the exact drop-in replacement is the SAIJ80X150-100S, retaining the same ISO 15552 mounting interface, bore, stroke, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push force), and it can vertically lift about 128 kg with a 2:1 safety margin. Note that the external stop screw sets the end position but is not a load lock; for held loads, use an external rod lock or the SAIL/BSAI lock variants.
Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S Technical Specifications
| Model | Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAIJ80X150-100S |
| Bore size | Ø80 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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-SAIJ80X150-100S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The B04-SAIJ80X150-100S 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-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S Is Used
Excavator Boom Positioning
Needs field stroke tuning for boom actuation links on construction machinery, allowing on-site extend stroke trimming by up to 100 mm to achieve precise digging geometry without machining spacers.
Crane Outrigger Deployment
Requires adjustable end positions for heavy-equipment outrigger locks, using the external stop screw to set the exact 50-150 mm extend reach for varying ground clearance profiles.
Rock Crusher Feed Gate
Demands variable stroke limits for aggregate flow control, trimming the extend stroke on-site to throttle the material feed gate precisely without re-plumbing the G3/8 pneumatic lines.
Replacing the Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S with the B04-SAIJ80X150-100S
To replace the discontinued B04-SIJ80X150-100S, order the drop-in SAIJ80X150-100S, keeping the identical ISO 15552 interface, G3/8 port, and 100 mm adjust window. When sizing both ways, the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N push at 0.5 MPa. Choose the 100 mm adjust window if your heavy-equipment mechanism requires field tuning the extend stroke down from 150 mm to a 50 mm minimum. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAIJ replacement uses current AirTAC switches). For stroke lengths of 300 mm or greater, verify side-load limits to prevent guide bearing failure.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAIJ80X150-100S
- ✓ 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-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X150-100S FAQ
Yes, the B04-SIJ80X150-100S is discontinued. The B04- prefix denotes the construction-machinery dedicated variant of the base SIJ80X150-100S, which is mechanically identical. The exact drop-in replacement is the SAIJ80X150-100S, offering the same ISO 15552 interface, 80 mm bore, 150 mm nominal stroke, 100 mm adjust window, and G3/8 port.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a 513 kgf theoretical max at 1.0 MPa. The external stop screw provides a 100 mm adjust window, meaning you can trim the extend stroke by up to 100 mm on-site (usable extend range 50-150 mm). The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
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