Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD50X1000
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD50X1000 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø50mm bore, 1000mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Rod (both ends)Ø20 mm
- Stroke1000 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD50X1000
The B04-SCD50X1000 is AirTAC's construction-machinery dedicated variant of the standard SCD50X1000 double-acting, double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the base model. It features a 50 mm bore and a 1000 mm stroke, yielding an equal push and pull force of 825 N at 0.5 MPa.
Because the piston rod passes through both end caps, the effective pressure area is identical in both directions. This through-rod design uses a Ø20 mm rod on both ends, features a 21 mm adjustable cushion, and has a body length A(SCD) of 207 mm. It provides superior anti-rotation characteristics and allows tooling to be mounted on the rear rod extension.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD50X1000 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD50X1000 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 1000 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø50mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 168 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-SCD50X1000
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 50 | Bore size in mm. |
| ×1000 | 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-SCD50X1000 Is Used
Excavator Panel Shifting
Equal push and pull force is ideal for sliding heavy cab panels or protective guards on earthmoving equipment.
Dual-Tool Transfer
The through-rod allows mounting a second tool or stopper on the rear extension for synchronized two-sided automation.
Non-Rotating Pusher
Better bearing support from the double-rod design prevents twisting during long-stroke pushing tasks on assembly lines.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD50X1000 the Right Cylinder?
Choose this 50 mm bore when an application requires exactly 825 N of thrust both ways at 0.5 MPa. If your machine needs less force, step down to the 40 mm bore (528 N); if you need substantially more power, step up to the 63 mm bore (1402 N). For tasks requiring only one-sided actuation, the standard single-rod AirTAC SC cylinder is a lighter, more compact choice.
To replace this unit, match the 50 mm bore, 1000 mm stroke, PT1/4 port thread, basic mounting style, and ensure no magnet is present. Because this model has a 1000 mm stroke, the long unsupported rod is susceptible to bending under side loads; always use an external guide rail or select a dedicated guided cylinder if heavy off-center loads are present.
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-SCD50X1000 FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant. It is mechanically identical to the standard SCD50X1000, offering the same 50 mm bore, 1000 mm stroke, and 825 N force at 0.5 MPa, simply designated for heavy-equipment builders.
A double-rod cylinder provides identical push and pull forces because the rod area is subtracted from both chambers. It also offers better rod guidance, resistance to rotation, and a rear extension for mounting secondary tooling or sensor flags.
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