This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID80X160S, 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-SID80X160S
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X160S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 160mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID80X160S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke160 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID80X160S
- 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-SID80X160S
The AirTAC B04-SID80X160S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal at 2268 N @0.5 MPa. The B04- prefix marks this as a construction-machinery dedicated variant of the base SID80X160S, mechanically identical to the standard line. This model is discontinued and is fully replaced by the direct replacement SAID80X160S, which shares the exact bore, stroke, G3/8 port, and mounting interface.
The SAID replacement features an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Because the second rod acts as an anti-rotation guide and can carry a sensor cam, it is ideal for heavy-equipment builders.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X160S Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X160S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID80X160S |
| Bore size | Ø80 mm |
| Stroke | 160 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-SAID80X160S 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-SAID80X160S 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-SID80X160S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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-SID80X160S Is Used
Excavator Linkage Control
Drives dual-tool mechanisms on construction machinery where equal push and pull force and anti-rotation stability are required for precise linkage positioning.
Heavy Equipment Actuation
Synchronizes opposing movements in heavy-equipment assemblies using the back rod to carry a sensor cam for end-of-stroke confirmation.
Concrete Pump Gates
Handles material flow gates on concrete pumps, utilizing the 3175 N @0.7 MPa equal force to reliably shift heavy diverters both ways.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID80X160S with the B04-SAID80X160S
To replace the discontinued B04-SID80X160S, specify the SAID80X160S; it is a direct swap retaining the ISO 15552 mounting interface, 80 mm bore, 160 mm stroke, and G3/8 port. Size both directions by checking the equal-both-ways force against your load, stepping to neighbouring bores if higher capacity is needed. Choose a double-rod design when you need anti-rotation stability or must drive two tools from one piston. Reuse FA, LB, or TC mounts directly. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. For strokes at or over 300 mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID80X160S
- ✓ 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-SID80X160S FAQ
Yes, the B04-SID80X160S construction-machinery dedicated cylinder is discontinued. The direct replacement is the SAID80X160S. It shares the identical ISO 15552 interface, 80 mm bore, 160 mm stroke, G3/8 port, and mounting options, while adding an upgraded piston seal.
Force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or the SAIL/BSAI variants.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID80X160S
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID80X160S replacement — usually within 7-8 hours.