This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X175S, 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-SID80X175S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X175S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X175S
- 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-SID80X175S
The AirTAC B04-SID80X175S is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix designates it as a construction-machinery dedicated variant, mechanically identical to the standard SID80X175S. A rod exits both ends on a single 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 25 mm rod, M20x1.5 thread, G3/8 port, and 36 mm adjustable cushions. This SID model is discontinued; the direct replacement is the SAID80X175S, which adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because the second rod can carry a sensor cam or drive two tools simultaneously while resisting rotation, double-rod designs excel in heavy-equipment frames. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; a plain cylinder cannot hold a load on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X175S |
| Bore size | Ø80 mm |
| Stroke | 175 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-SAID80X175S 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-SAID80X175S 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-SID80X175S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×175 | 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-SID80X175S Is Used
Excavator Linkage Actuation
Uses the equal both-ways force and anti-rotation properties to synchronize heavy cab doors or access panels on earthmoving equipment without twisting.
Crane Load Centering
Drives two opposing centering jaws simultaneously from one piston, ensuring balanced positioning of heavy structural components before welding.
Vibratory Screen Adjustment
The rear rod carries a sensor cam to track stroke position while the front rod adjusts flow gates, leveraging the 36 mm cushions to decelerate at stroke ends.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X175S with the B04-SAID80X175S
To replace the discontinued B04-SID80X175S, specify the SAID80X175S. It is a direct: identical 80 mm bore, 175 mm stroke, 25 mm rod, G3/8 port, M20x1.5 thread, and ISO 15552 mounting interface (Basic, FA, LB, TC, FTC, TCM1, TCM2). The SAI upgrade adds a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Size both ways by confirming the 2268 N @0.5 MPa equal force fits your load; if you need more force, step up to the 100 mm bore (3681 N @0.5 MPa), or step down to 63 mm (1402 N) for lighter duties. Choose a double-rod cylinder when you need anti-rotation, a back rod to carry a sensor cam, or to drive two tools. Retain the -S magnet for CS1-B/DS1-B switch mounting. For strokes at or above 300 mm, verify side-load bearing limits, though this 175 mm unit is well within standard guidance capacity.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X175S
- ✓ 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-SID80X175S FAQ
Yes, the B04-SID80X175S is discontinued. The direct replacement is the SAID80X175S. The B04- prefix simply marks it as a construction-machinery dedicated variant of the base SID80X175S, so all physical specs (80 mm bore, 175 mm stroke, G3/8 port, M20x1.5 thread) are identical. The SAID keeps the ISO 15552 mounting interface and adds an upgraded piston seal.
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. The air port is G3/8. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
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