Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X225S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X225S 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. Ø100mm bore, 225mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke225 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X225S
The B04-SCD100X225S is an AirTAC double-acting, double-rod cylinder built for construction machinery. The B04- prefix marks it as the construction-machinery dedicated variant of the base SCD100X225S, meaning it is mechanically identical to the standard model. It features a 100 mm bore and a 225 mm stroke. Because the Ø25 mm piston rod passes through both end caps, the effective area is identical in both chambers, yielding an equal push and pull force of 5153 N at 0.7 MPa.
This symmetric thrust is ideal for heavy equipment requiring two-sided actuation or non-rotating tooling. The 225 mm stroke is a non-standard made-to-order length (the bore 32-100 standard list jumps from 200 to 250 mm). A built-in magnet (-S) is included, allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for end-of-stroke detection. Adjustable cushions of 29 mm decelerate the piston at both extremes.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X225S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X225S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 225 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| 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, 29 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 (Ø100mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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-SCD100X225S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×225 | 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-SCD100X225S Is Used
Heavy Equipment Shuttling
Drives symmetric transfer arms on earthmoving attachments where equal force is needed to push debris away and retract the tooling at the same speed.
Two-Sided Actuation
Actuates dual clamps or opposing jaws on a machinery spreader, using the rear rod extension to carry a secondary stopper or mechanical flag.
Non-Rotating Pushers
Pushes heavy structural components from both ends, leveraging the double-rod guidance to minimize twist during high-thrust positioning cycles.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X225S the Right Cylinder?
Choose this 100 mm bore when an application demands substantial equal bidirectional thrust (3681 N at 0.5 MPa). If your equipment needs less force, stepping down to an 80 mm bore yields 2268 N at 0.5 MPa. If you only need unidirectional thrust and want to save space, a single-rod SC cylinder is preferable. If side loads are high, use an external guide rather than relying on the through rod.
For replacements, match the 100 mm bore, 225 mm stroke, PT1/2 port thread, basic mounting, and the -S magnet. At 225 mm, side-load bending on the unsupported rod is moderate; use external guides or a fully guided cylinder for heavy off-center loads.
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-SCD100X225S FAQ
The B04- prefix designates this as a construction-machinery dedicated variant. It is mechanically identical to the standard SCD100X225S, offering the same 100 mm bore, 225 mm stroke, and 5153 N equal push/pull force at 0.7 MPa.
A double-rod cylinder provides identical push and pull forces (5153 N both ways here) and symmetrical speeds. The through rod offers better guidance and anti-rotation, plus a rear extension for mounting secondary tooling or sensor flags.
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