This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X80, 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-SID80X80
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X80 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X80, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X80
- 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-SID80X80
The AirTAC B04-SID80X80 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the base SID80X80, mechanically identical with a 80mm bore, 80mm stroke, G3/8 port, and M20x1.5 rod thread. This SKU has no -S magnet and cannot take a magnetic switch. As an end-of-life product, it is fully replaced by the SAID80X80.
The direct replacement SAID80X80 successor retains the exact ISO 15552 mounting interface, bore, stroke, and equal-both-ways force, while upgrading the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Because both faces use the rod-side area, the back rod can drive a second tool or carry a sensor cam without force loss. Note that air cushions only decelerate near stroke end; for held loads use an external rod lock or the SAIL/BSAI lock variant.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X80 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X80 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X80 |
| Bore size | Ø80 mm |
| Stroke | 80 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-SAID80X80 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-SAID80X80 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-SID80X80
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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-SID80X80 Is Used
Excavator Linkage Actuation
Drives synchronized heavy-equipment covers or gates on construction machinery where equal push/pull force and anti-rotation stability are critical.
Dual-Tool Material Handling
Uses the rear rod extension to mount a secondary cam or tooling head, allowing one cylinder to perform two synchronized handling operations.
Loader Boom Alignment
Maintains precise positioning in heavy-equipment lifting frames, relying on the double-rod geometry to prevent twist during vertical load transfer.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X80 with the B04-SAID80X80
To replace the discontinued B04-SID80X80, order the SAID80X80 (insert A after the leading S, dropping the B04- prefix for the standard catalogue number); it is a direct with identical ISO 15552 mounting, G3/8 port, and 36mm adjustable cushion. Size both ways by checking neighbor bores: the 63mm yields 1402 N @0.5 MPa, and the 100mm yields 3681 N @0.5 MPa, but this 80mm gives equal 2268 N force in both directions. A double rod is right when you need anti-rotation stability or symmetrical motion. Reuse FA, LB, or TC mounts. For strokes >=300mm, verify side-load limits. This non-magnetic SKU cannot use sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X80
- ✓ 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-SID80X80 FAQ
Yes, the B04-SID80X80 (construction-machinery dedicated variant of SID80X80) is discontinued. The direct replacement is the SAID80X80, which shares the identical ISO 15552 interface, bore, stroke, G3/8 port, and equal-both-ways force, but features an upgraded piston seal.
Force is equal both ways (push and pull) at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The air port is G3/8.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID80X80
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID80X80 replacement — usually within 7-8 hours.