Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X75
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X75 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, 75mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke75 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X75
The B04-SCD100X75 is AirTAC's construction-machinery dedicated variant of the standard SCD100X75 double-rod cylinder. The B04- prefix denotes a unit slated for heavy-equipment builders, yet it remains mechanically identical to the base SCD model, offering identical bore, porting, and force characteristics.
Featuring a 100 mm bore and a 75 mm stroke, this double-acting cylinder generates an equal 3681 N of force in both push and pull directions at 0.5 MPa, scaling up to 6626 N at 0.9 MPa. A Ø25 mm piston rod passes completely through both end caps, utilizing 29 mm adjustable cushions on either side to decelerate the payload smoothly.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X75 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X75 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 75 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-SCD100X75
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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-SCD100X75 Is Used
Heavy Equipment Actuation
Drives bidirectional mechanisms on construction machinery where equal thrust is needed for both extending and retracting heavy linkage components.
Shuttle Transfer Units
Moves parts back and forth across an assembly line using both rod ends to carry tooling, ensuring symmetric speed and force in each travel direction.
Non-Rotating Pushers
Utilizes the through-rod design for improved anti-rotation characteristics, keeping pushing attachments aligned during repetitive clamping tasks.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X75 the Right Cylinder?
Select this 100 mm bore when your application demands high bidirectional thrust that a 80 mm bore cannot provide (2268 N at 0.5 MPa), but avoid oversizing to a 125 mm unit if the 5734 N output would waste valuable space and air volume. A single-rod SC cylinder is preferable if you only need unidirectional force, while a fully guided cylinder is necessary for heavy lateral loads.
When replacing this unit, match the 100 mm bore, 75 mm stroke, PT1/2 port thread, basic mounting, and non-magnet configuration exactly. Because the stroke is relatively short, rod bending is minimal, but always verify the external guide supports the load if side forces exist.
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-SCD100X75 FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant. It is mechanically identical to the standard SCD100X75 double-rod cylinder, offering the same 100 mm bore, 75 mm stroke, and 3681 N equal push/pull force at 0.5 MPa.
No, the 29 mm adjustable cushions only decelerate the piston near the stroke ends to prevent impact damage. If the construction machinery requires the load to hold its position without live air pressure, you must use an external mechanical lock or a pilot-operated check valve.
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