This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X160, 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-SID40X160
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160 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-SAID40X160, 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-SAID40X160
- 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-SID40X160
The AirTAC B04-SID40X160 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force remain equal at 528 N (@0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant of the base SID40X160, mechanically identical with a 16 mm rod, G1/4 port, and M12x1.25 thread. This SID model is discontinued and replaced by the direct replacement SAID40X160, which reuses the exact ISO 15552 mounting interface and adds an upgraded piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life.
Because both faces use the rod-side area, the equal-both-ways force prevents rod deflection and allows the rear rod to drive a second tool or sensor cam. Note this non-magnetic SKU cannot take a switch, and a plain cylinder does not hold loads on air loss—the cushion only decelerates near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X160 |
| 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-SAID40X160 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-SAID40X160 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-SID40X160
| 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-SID40X160 Is Used
Excavator Linkage Actuation
Drives secondary construction-machinery covers or gates with equal push and pull force, leveraging the double-rod design to prevent uneven wear on heavy-equipment pivots.
Synchronized Material Transfer
Uses both rod ends to push and pull opposing conveyor diverter arms simultaneously, ensuring perfectly timed material routing on heavy-equipment assembly lines.
Rigid Guide Alignment
The twin-rod anti-rotation特性 stabilizes construction-machinery fixture plates during high-speed positioning, eliminating rotational play without external guides.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X160 with the B04-SAID40X160
To replace the discontinued B04-SID40X160, specify the SAID40X160; it is a direct retaining the 40 mm bore, 160 mm stroke, G1/4 port, and 528 N equal-both-ways force. When sizing both ways, verify if neighbouring bores (32 mm or 50 mm) better match your load, but the 40 mm offers 528 N @0.5 MPa safely carrying 317 N. Choose a double-rod cylinder when you need anti-rotation rigidity or must drive two mechanisms simultaneously. Reuse FA, LB, or TC ISO 15552 mounts directly. As this SKU lacks the -S magnet, it cannot accept sensors. For strokes of 300 mm or longer, carefully manage side-load alignment to prevent guide wear. For held loads, add an external rod lock, as air cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X160
- ✓ 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-SID40X160 FAQ
Yes, the B04-SID40X160 (construction-machinery dedicated SID40X160) is discontinued. The direct replacement is the SAID40X160. It shares the identical ISO 15552 interface, 40 mm bore, 160 mm stroke, G1/4 port, and equal-both-ways force, while adding an upgraded piston seal.
Force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. It features a 16 mm rod, M12x1.25 thread, 27 mm adjustable cushion, and 30-800 mm/s speed. Operating pressure is 0.15-1.0 MPa. It cannot hold loads without live air; use an external rod lock.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X160
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