This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAIJ80X60-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAIJ80X60-30S 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-SIJ80X60-30S
The AirTAC Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X60-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 60mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAIJ80X60-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke60 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAIJ80X60-30S
About the Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X60-30S
The AirTAC B04-SIJ80X60-30S is an ISO 15552 double-acting single-rod adjustable-stroke cylinder where the leading B04- prefix marks it as the construction-machinery dedicated variant of the base SIJ80X60-30S. It is mechanically identical to the standard model, featuring an 80mm bore, a 60mm nominal extend stroke, and an external stop screw that lets you trim the extend stroke by up to 30mm on-site (yielding a 30-60mm usable window). The stop screw sets the end position and is not a load lock. It delivers 2513N push and 2268N pull at 0.5MPa via a G3/8 port, with a 25mm piston rod and M20x1.5 rod thread.
This SIJ series is discontinued and the exact drop-in replacement is the SAIJ80X60-30S, retaining the same ISO 15552 mounting interface, bore, force, and adjust window. The SAIJ family introduces an upgraded piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. For sizing, the computed safe working load is roughly 1508N (60% of the 2513N push at 0.5MPa), translating to a vertical lift capacity of about 128kg with a 2:1 margin. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss; for held loads use an external rod lock or the SAIL/BSAI lock variant.
Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X60-30S Technical Specifications
| Model | Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X60-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAIJ80X60-30S |
| Bore size | Ø80 mm |
| Stroke | 60 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-SAIJ80X60-30S 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-SAIJ80X60-30S 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-SIJ80X60-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×60 | 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-SIJ80X60-30S Is Used
Excavator Door Latching
Tuning the extend stroke on-site by up to 30mm allows precise alignment of heavy door latches on construction cabs without machining custom spacers.
Heavy Equipment Actuation
The 80mm bore provides 2513N push at 0.5MPa for robust actuation of covers and gates on heavy machinery, with adjustable end positioning to compensate for frame tolerances.
Loader Component Indexing
Field-trimming the extend stroke lets operators dial in the exact push distance for indexing components on assembly lines dedicated to loader manufacturing.
Replacing the Airtac B04-SIJ Construction Machinery Special ISO Standard Cylinder B04-SIJ80X60-30S with the B04-SAIJ80X60-30S
To replace the discontinued B04-SIJ80X60-30S, order the exact drop-in SAIJ80X60-30S, which preserves the 80mm bore, 60mm nominal stroke, 30mm adjust window, G3/8 port, and ISO 15552 mounting. When sizing both ways, the neighboring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N push at 0.5MPa. Choose the 30mm adjust window if your assembly requires field-tuning the extend stroke between 30 and 60mm; this stop screw sets the end position but is not a lock. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix ensures a piston magnet is present for legacy CS1-B/DS1-B switches. Because the stroke is under 300mm, side-load concerns are minimal, but always guide the rod to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAIJ80X60-30S
- ✓ 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-SIJ80X60-30S FAQ
Yes, the B04-SIJ80X60-30S is discontinued. The exact drop-in replacement is the SAIJ80X60-30S. The B04- prefix simply denotes the construction-machinery dedicated variant of the SIJ80X60-30S, and the SAIJ replacement matches it exactly on ISO 15552 interface, 80mm bore, 60mm stroke, 30mm adjust window, G3/8 port, and force.
The 80mm bore delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. The external stop screw provides a 30mm adjust window, allowing you to shorten the 60mm nominal extend stroke down to 30mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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