Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X200S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X200S 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, 200mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke200 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X200S
The B04-SCD80X200S is AirTAC's construction-machinery dedicated variant of the SCD80X200S double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the standard model, offering the same rugged tie-rod construction. Because the piston rod passes through both end caps, the effective area is identical in both chambers, yielding an equal push and pull force of 2268 N at 0.5 MPa.
This 80 mm bore unit features a 200 mm stroke and a built-in magnet (the S suffix) that allows CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for position signaling. It uses a Ø25 mm rod extending from both ends, PT3/8 ports, and 28 mm adjustable cushions to decelerate the piston near the end of travel. The retracted body length is based on the SCD A dimension of 257 mm, making it longer than a comparable single-rod SC cylinder.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X200S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X200S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 200 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-SCD80X200S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×200 | 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-SCD80X200S Is Used
Excavator Actuation
Drives symmetric pushing and pulling mechanisms on heavy equipment where equal force both ways prevents mechanical binding during repetitive digging or grading cycles.
Shuttle Transfer Tables
Moves parts across construction machinery assembly lines using the rear rod to carry a stopper flag, ensuring precise material placement without rotational drift.
Dual-Tooling Workheads
Mounts a primary actuation tool on the front rod and a secondary return-sensor target on the rear rod, leveraging the 3175 N force at 0.7 MPa for heavy-duty forming tasks.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X200S the Right Cylinder?
Choose this 80 mm bore when an application demands 2268 N of thrust in both directions at 0.5 MPa. If your mechanism requires less force, stepping down to the 63 mm bore provides 1402 N each way. If you only need unidirectional pushing and do not require a rear rod for dual tooling or anti-rotation, a standard single-rod AirTAC SC cylinder will save space and weight. For loads needing precise linear guidance without side-load deflection, a dedicated guided cylinder is superior to relying solely on the through-rod.
When ordering a replacement, match these five attributes exactly: 80 mm bore, 200 mm stroke, PT3/8 port thread, basic mounting (or the required SCD accessory like F-SC80LB or F-SC80TC), and the built-in magnet (-S). The adjustable cushion decelerates the piston but does not lock or hold the load; if the machinery must hold 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-SCD80X200S FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant. It is mechanically identical to the standard SCD80X200S, offering the exact same 80 mm bore, 200 mm stroke, and physical specs, but is designated for heavy-equipment builders.
The double-rod design provides equal push and pull force of 2268 N at 0.5 MPa because the rod area is subtracted from both sides. It also offers better rod guidance, anti-rotation benefits, and a rear rod for mounting secondary tooling or sensor flags.
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