Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100 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, 100mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke100 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100
The B04-SCD80X100 is AirTAC's construction-machinery dedicated double-rod cylinder, mechanically identical to the standard SCD80X100. The B04- prefix simply designates its fulfillment for heavy-equipment builders without altering any physical specs. It delivers a robust 3175 N of thrust in both directions at 0.7 MPa, ensuring perfectly symmetric force and speed for dual-tooling tasks.
Featuring a 25 mm rod protruding from both end caps and a PT3/8 port, this double-acting tie-rod cylinder provides superior anti-rotation characteristics over single-rod units. It includes adjustable cushions with a 28 mm length to decelerate the piston smoothly at stroke ends, and its retracted body length spans 257 mm (A dimension) plus the 100 mm stroke.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 100 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-SCD80X100
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×100 | 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-SCD80X100 Is Used
Heavy Equipment Actuation
Drives symmetric pushing and pulling mechanisms on construction machinery where equal force both ways prevents uneven wear on heavy structural links.
Shuttle Transfer Tables
Moves parts back and forth on transfer lines using tooling attached to both rod ends, ensuring stable, non-rotating payload handling.
Dual-Side Forming Stations
Actuates clamping or forming tools simultaneously from both ends, utilizing the 4082 N maximum thrust at 0.9 MPa for high-force pressing operations.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X100 the Right Cylinder?
Choose this 80 mm bore when your application demands 3175 N of equal bidirectional force at 0.7 MPa. If your mechanism only requires actuation from one side, the single-rod AirTAC SC80X100 is a lighter, more compact alternative. Conversely, if your setup involves heavy side loads, a dedicated guided cylinder will handle lateral forces better than a through-rod design.
For exact drop-in replacement, match the 80 mm bore, 100 mm stroke, PT3/8 port thread, basic mounting style, and confirm whether a magnetic piston (-S) is needed. Note that while the through rod offers better guidance than a single rod, it is not a substitute for a true guided cylinder under significant lateral stress.
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-SCD80X100 FAQ
The B04- prefix indicates that this is a construction-machinery dedicated variant of the standard SCD80X100. It is mechanically and dimensionally identical to the base model, offering the same 3175 N equal push and pull force at 0.7 MPa, but is designated for heavy-equipment manufacturing.
No, the adjustable cushion only decelerates the piston near the stroke ends to prevent impact damage. It does not lock or hold the load. If the machinery requires position holding without constant air pressure, an external mechanical lock or pilot-operated check valve must be installed.
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