This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X200S, 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-SID40X200S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID40X200S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAID40X200S
- 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-SID40X200S
The AirTAC B04-SID40X200S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force of 528 N at 0.5 MPa. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant, mechanically identical to the base SID40X200S with a 40 mm bore, 200 mm stroke, and G1/4 port. This legacy model is discontinued and is fully replaced by the direct replacement SAID40X200S, which retains the exact ISO 15552 mounting interface and bore dimensions.
The double-rod design provides inherent anti-rotation properties and allows the rear rod to carry a sensor cam, while the ISO 15552 mounting footprint allows direct reuse of existing brackets. The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X200S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X200S |
| Bore size | Ø40 mm |
| Stroke | 200 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-SAID40X200S 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-SAID40X200S 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-SID40X200S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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-SID40X200S Is Used
Excavator Linkage Actuation
Drives synchronized positioning links on heavy equipment where equal push/pull force and anti-rotation resistance handle reversing loads on the construction site.
Crusher Tool Adjustment
Regulates jaw gap settings on material handlers, using the rear rod to mount a position cam while maintaining consistent clamping force both ways.
Paver Flap Control
Modulates flow gates on asphalt pavers, benefiting from the double-rod geometry to maintain balanced metering forces despite varying aggregate back-pressure.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X200S with the B04-SAID40X200S
To replace the discontinued B04-SID40X200S, specify the direct replacement SAID40X200S, which matches the 40 mm bore, 200 mm stroke, G1/4 port, and ISO 15552 mounting interface. When sizing, ensure the equal both-ways force of 528 N at 0.5 MPa (739 N at 0.7 MPa) meets your load requirements; if more force is needed, step up to the 50 mm bore. A double-rod cylinder is the right choice when you need equal force in both directions, anti-rotation stability, or a back rod to drive a second tool. Mounting options include Basic, FA, LB, and TC styles. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAI replacement uses current AirTAC switches). For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X200S
- ✓ 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-SID40X200S FAQ
Yes, the B04-SID40X200S is discontinued. The direct replacement is the SAID40X200S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SID40X200S; mechanically, it is identical. The SAID replacement shares the same ISO 15552 interface, 40 mm bore, 200 mm stroke, G1/4 port, and mounting options, but uses an upgraded piston seal.
Because it is a double-rod cylinder, the push and pull force are 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. Note that a plain cylinder does not hold loads on air loss; the air cushion only decelerates near stroke end. For held loads, use an external rod lock or the SAIL/BSAI lock variant.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X200S
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