This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X100S, 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-SID80X100S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 100mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke100 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X100S
- 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-SID80X100S
The AirTAC B04-SID80X100S is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID80X100S, mechanically identical to it. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. It features a Ø25 mm piston rod, M20x1.5 rod-end thread, G3/8 air port, and 36 mm adjustable air cushions at each end. This SID model is discontinued and end-of-life; the direct replacement is the SAID80X100S, which shares the same ISO 15552 interface, bore, stroke, force, port and mounting.
Replacing it with the SAID family brings an upgraded piston seal using two Y-shaped one-way elements for long life and low start-up pressure, while the SAI line also adds SAIL (air-released lock), SAIF (built-in 4M valve), and BSAI (clamp-lock) variants the SI line lacked. The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam or drive a second tool simultaneously. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X100S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X100S |
| Bore size | Ø80 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID80X100S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The B04-SAID80X100S 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-SID80X100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×100 | 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-SID80X100S Is Used
Excavator Linkage Actuation
Drives dual-tool mechanisms on heavy equipment where the B04- construction-machinery prefix ensures fitment, using the back rod to carry a sensor cam for closed-loop track positioning.
Crane Slewing Brakes
Applies equal both-ways clamping force on heavy-duty brake calipers, leveraging the 2268 N @0.5 MPa output and anti-rotation stability to prevent drift during load swings.
Paver Screed Adjustment
Synchronizes screed extension arms on road paving machinery, using the G3/8 port and 36 mm cushions to absorb shock from heavy vibration while maintaining precise dual-end positioning.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X100S with the B04-SAID80X100S
To replace the discontinued B04-SID80X100S, specify the SAID80X100S direct upgrade, matching the 80 mm bore, 100 mm stroke, G3/8 port, and ISO 15552 mounting interface (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because force is equal both ways at 2268 N @0.5 MPa, size both directions by checking neighbor bores if you need more or less power. A double rod is right when you need anti-rotation resistance or a back-end sensor cam. The -S magnet supports legacy CS1-B/DS1-B switches. For strokes >=300 mm, verify side-load limits. A plain cylinder does not hold loads on air loss; cushions only decelerate. For held loads, use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X100S
- ✓ 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-SID80X100S FAQ
Yes, the B04-SID80X100S is discontinued. The B04- prefix marks it as the construction-machinery dedicated variant of the base SID80X100S. The direct replacement is the SAID80X100S, which is mechanically identical with the same ISO 15552 interface, bore, stroke, G3/8 port, and mounting.
Because it is a double-rod cylinder, force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. It operates at 30-800 mm/s, has a max standard stroke of 1500 mm, a proof pressure of 1.5 MPa, and uses a G3/8 air port.
Related AirTAC SAI Cylinders
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