Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X700S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X700S 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, 700mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke700 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X700S
The B04-SCD100X700S is an AirTAC double-acting, double-rod cylinder where the B04- prefix designates it as a construction-machinery dedicated variant; mechanically, it is identical to the standard SCD100X700S. The through-rod design yields perfectly symmetric thrust, generating 3681 N of force in both directions at 0.5 MPa and 6626 N at 0.9 MPa.
Equipped with a built-in magnet (the S suffix), this unit allows CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for position signaling. It features a Ø25 piston rod extending from both end caps, PT1/2 ports, and 29 mm adjustable cushions to decelerate the payload smoothly at stroke ends.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X700S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X700S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 700 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-SCD100X700S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×700 | 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-SCD100X700S Is Used
Excavator Linkage Control
Drives symmetric positioning links on heavy construction equipment where equal force is needed to push and pull heavy structural components.
Shuttle Transfer Tables
Moves heavy pallets or material carriages back and forth, utilizing the dual rods to mount tooling or stops on both ends simultaneously.
Non-Rotating Pushers
Handles heavy workpiece pushing tasks where the extra rod guidance helps resist twisting forces better than a single-rod actuator.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X700S the Right Cylinder?
This 100 mm bore provides substantial power for heavy-equipment actuation. If your application requires less force, stepping down to an 80 mm bore drops the output to 2268 N at 0.5 MPa. If you only need unidirectional thrust without the rear rod, a single-rod SC cylinder saves space. For loads demanding high side-load resistance, a dedicated guided cylinder is superior to relying solely on the through-rod guidance.
With a 700 mm stroke, the unsupported rod length is significant; always use an external guide rail to prevent rod bending and premature bearing wear. To replace this unit, match the 100 mm bore, 700 mm stroke, PT1/2 port thread, basic mounting, and the -S magnet option.
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-SCD100X700S FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated cylinder. It is mechanically identical to the standard SCD100X700S, offering the same 3681 N equal push and pull force at 0.5 MPa, but is specifically designated for heavy-equipment builders.
No. The adjustable cushions only decelerate the piston near the end of the stroke. If air pressure is lost, the cylinder will drift. A mechanical lock, external rod brake, or pilot-operated check valve is required to hold a load safely without live pressure.
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