This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X600, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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-SID40X600
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X600 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 600mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID40X600, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAID40X600
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X600
The AirTAC B04-SID40X600 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix designates it as a construction-machinery dedicated variant, mechanically identical to the standard SID40X600. Because a rod exits both ends on a single piston, both faces use the rod-side area, making push and pull force equal (528 N at 0.5 MPa). This model is discontinued; the direct replacement is the SAID40X600, which reuses the exact same ISO 15552 mounting interface, 40 mm bore, 600 mm stroke, and G1/4 port.
The SAI upgrade introduces a two-piece Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot accept switches. As a plain cylinder, it will not hold loads on air loss—the 27 mm adjustable cushions only decelerate near stroke end, so use an external rod lock for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X600 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X600 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X600 |
| Bore size | Ø40 mm |
| Stroke | 600 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID40X600 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The B04-SAID40X600 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X600
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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-SID40X600 Is Used
Excavator Linkage Actuation
Uses the equal both-ways force and double-rod anti-rotation properties to drive synchronized positioning links on heavy equipment cabs without rotational drift.
Loader Attachment Shift
Employs the back rod end to mirror a secondary cam movement on construction machinery attachments, maintaining balanced push and pull forces across the 600 mm travel.
Crusher Feed Gate Control
Leverages the robust ISO 15552 mounting and equal force to open and close heavy aggregate feed gates, ensuring consistent closing pressure on site.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X600 with the B04-SAID40X600
To replace the discontinued B04-SID40X600, specify the SAID40X600, which preserves the 600 mm stroke, G1/4 port, M12x1.25 rod thread, and ISO 15552 mounting footprint (Basic, FA, LB, TC). Size both directions by the equal push/pull force: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. If less force is needed, the 32 mm bore offers 345 N at 0.5 MPa; if more is required, the 50 mm bore provides 825 N. A double-rod design is right when you need anti-rotation stability, equal force both ways, or a back rod to drive a second tool. For the 600 mm stroke, external guides are recommended to prevent rod bending under side loads. This SKU lacks the -S magnet and cannot support sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X600
- ✓ 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-SID40X600 FAQ
Yes, the B04-SID40X600 (construction-machinery dedicated variant of the SID40X600) is discontinued. The direct replacement is the SAID40X600. It shares the identical 40 mm bore, 600 mm stroke, G1/4 port, and ISO 15552 mounting interface, but features an upgraded two-piece Y-shaped piston seal for longer life and lower start-up pressure.
Because it is a double-rod cylinder, force is equal both ways: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The air port is G1/4, the rod thread is M12x1.25, and it operates at 30-800 mm/s with 27 mm adjustable cushions at each end. It cannot hold a load on air loss, so an external rod lock is required for vertical holding.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X600
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