Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø80mm bore, 100mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke100 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S
The B04-SCD80X100S is AirTAC's construction-machinery dedicated variant of the SCD80X100S double-rod cylinder, sharing identical mechanical specs with the base model. The B04- prefix simply designates its optimization for heavy-equipment builders. Featuring a 80mm bore and 100mm stroke, this double-acting cylinder produces 2268N of equal push and pull force at 0.5 MPa, scaling up to 4082N at 0.9 MPa.
Because the Ø25mm piston rod passes through both end caps, the effective pressure area is identical in both directions. This symmetric design provides superior rod guidance and anti-rotation compared to a single-rod unit. The built-in magnet (-S) allows CMSG/DMSG/EMSG sensors to track piston position, while the 28mm adjustable cushions decelerate the load at stroke ends.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 100 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø80mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S Is Used
Excavator Linkages
Drives symmetric positioning arms on heavy equipment where equal push and pull thrust prevents linkage binding under varying loads.
Shuttle Transfer Tables
Moves fixtures back and forth on a transfer line using the rear rod end for a stopper block while the front end pushes the payload.
Non-Rotating Pushers
Handles workpieces requiring strict anti-rotation control, leveraging the dual-rod guidance to keep tooling perfectly aligned.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S the Right Cylinder?
Select this 80mm bore when an application demands 2268N of thrust both ways at 0.5 MPa. If your heavy-equipment mechanism requires less force, stepping down to a 63mm bore yields 1402N; if more power is needed, a 100mm bore provides 3681N. A single-rod SC cylinder is preferable if rear tooling or symmetric bearing loading is unnecessary, while extreme side loads require a true guided cylinder rather than relying solely on the through-rod.
To guarantee a correct replacement, verify five details: the 80mm bore, 100mm stroke, PT3/8 port thread, SCD mounting accessory (Basic, FA, LB, or TC), and the presence of the -S magnet. Note that the adjustable air cushions only decelerate the piston near stroke ends; they do not lock or hold a load. If the mechanism must maintain position without live air pressure, fit an external rod brake or pilot-operated check valve.
Double-rod checklist
- ✓ Need equal force / speed both directions?
- ✓ Rear rod for tooling, stopper or sensor flag?
- ✓ Better rod guidance / anti-rotation?
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Keep BOTH rod ends clear of side load and interference.
- check Adjust end cushion screws for smooth stops.
- check Use SCD mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100S FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated line. The B04-SCD80X100S is mechanically identical to the standard SCD80X100S, offering the same 80mm bore, 100mm stroke, and 2268N equal push/pull force at 0.5 MPa.
The double-rod design provides identical 2268N force in both directions because the Ø25mm rod area is subtracted from both chambers. It offers better anti-rotation characteristics and allows tooling or sensors to be mounted on the rear rod, which a single-rod SC cylinder cannot do.
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