This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X160S, 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-SID40X160S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID40X160S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAID40X160S
- 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-SID40X160S
The AirTAC B04-SID40X160S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring force is equal both ways (528 N at 0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant; mechanically, it is identical to the base SID40X160S, featuring a 40 mm bore, G1/4 port, and M12x1.25 rod thread. This discontinued model is fully replaced by the direct replacement SAID40X160S, which retains the exact ISO 15552 mounting interface and bore/stroke.
Because both faces use the rod-side area, the double-rod design provides inherent anti-rotation and allows the rear rod to carry a sensor cam for dual-end positioning. The SAID replacement also uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note that a plain cylinder does not hold loads on air loss; the 27 mm adjustable cushions only decelerate near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X160S |
| Bore size | Ø40 mm |
| Stroke | 160 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-SAID40X160S 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-SAID40X160S 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-SID40X160S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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-SID40X160S Is Used
Excavator Linkage Actuation
Drives synchronized secondary linkage arms on heavy equipment where equal both-ways force and inherent anti-rotation prevent binding during harsh construction-machine cycles.
Crusher Feed Diverter
Positions aggregate diverters on mobile crushing plants, using the rear rod to carry a sensor cam for precise end-of-stroke confirmation in dusty environments.
Loader Attachment Shift
Shifts quick-coupler plates on loaders, benefiting from the 27 kg vertical lift capacity and robust ISO 15552 mounting to handle heavy attachment geometry.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160S with the B04-SAID40X160S
To replace the discontinued B04-SID40X160S, specify the direct replacement SAID40X160S, which matches the 40 mm bore, 160 mm stroke, G1/4 port, and ISO 15552 dimensions without altering your mounting footprint. When sizing, remember force is equal both ways at 528 N (@0.5 MPa); if higher equal-both-ways force is needed, step up to the 50 mm bore, or drop to 32 mm for lighter loads. A double-rod configuration is the right choice when you need anti-rotation resistance, dual-tool driving, or a back rod to carry a sensor cam. Reuse basic, FA, LB, or TC mounts directly. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. For strokes of 300 mm or longer, carefully manage side-load alignment to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X160S
- ✓ 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-SID40X160S FAQ
Yes, the B04-SID40X160S is discontinued. The direct replacement is the SAID40X160S. The B04- prefix simply marks it as construction-machinery dedicated; mechanically it is identical to the base SID40X160S. The SAID replacement shares the exact ISO 15552 interface, 40 mm bore, 160 mm stroke, G1/4 port, and mounting options.
Because it is a double-rod cylinder, force is equal both ways at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The air port is G1/4. Remember, the adjustable cushions only decelerate the load; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variants.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X160S
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