This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X75, 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-SID63X75
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X75
- 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-SID63X75
The AirTAC B04-SID63X75 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID63X75, mechanically identical in every spec. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways (1402 N @0.5 MPa). It features a 63mm bore, G3/8 port, and M16x1.5 rod thread. This SID model is discontinued and the direct replacement is the SAID63X75, which retains the same interface, force, and mounting.
The SAI replacement family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because the second rod can drive two tools or carry a sensor cam while resisting rotation, double-rod designs offer superior stability. Note this SKU lacks a -S magnet and cannot take a sensor.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X75 |
| Bore size | Ø63 mm |
| Stroke | 75 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-SAID63X75 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-SAID63X75 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-SID63X75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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-SID63X75 Is Used
Excavator Linkage Control
Uses the equal both-ways force and anti-rotation properties of the double rod to synchronously actuate heavy-equipment covers or linkage arms on construction machinery without twisting.
Dual-Tool Material Handling
Drives two separate gripper or pusher mechanisms simultaneously from one piston, leveraging the rods exiting both ends for compact assembly line transfers in heavy-duty equipment manufacturing.
Guided Pressing Station
Provides a rigid, non-rotating pressing action for assembling heavy machinery components, where the second rod adds structural stability against off-center loads.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X75 with the B04-SAID63X75
To replace the discontinued B04-SID63X75, specify the SAID63X75 directly—it is a direct swap retaining the ISO 15552 mounting interface, 63mm bore, 75mm stroke, G3/8 port, and 1402 N equal-both-ways force. When sizing both ways, compare neighboring bores (50mm or 80mm) if you need to adjust the equal push/pull force. A double-rod cylinder is the right choice when you need anti-rotation stability, synchronous driving of two mechanisms, or a back rod to carry a sensor cam. You can reuse FA, LB, or TC mounts. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors. For strokes >=300mm, verify side-load alignment to prevent guide wear. Finally, a plain cylinder cannot hold a load on air loss—the cushion only decelerates near stroke end—so for held loads use an external rod lock or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X75
- ✓ 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-SID63X75 FAQ
Yes, the B04-SID63X75 (construction-machinery dedicated SID63X75) is discontinued. The direct replacement is the SAID63X75. It shares the identical ISO 15552 interface, 63mm bore, 75mm stroke, G3/8 port, and mounting hardware. The SAI family also adds upgraded piston seals and lock variants like SAIL/BSAI.
Force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. Speed is 30-800 mm/s. The air cushion only decelerates near stroke end; it does not hold loads on air loss. For held loads, use an external rod lock or pilot-operated check valve.
Related AirTAC SAI Cylinders
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