Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300 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, 300mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke300 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300
The B04-SCD80X300 is AirTAC's construction-machinery dedicated double-rod cylinder, mechanically identical to the standard SCD80X300. The B04- prefix simply designates its application-specific tuning for heavy-equipment builders, without altering any core specifications.
Featuring a 25 mm rod protruding from both end caps, it delivers identical 2268 N thrust in both directions at 0.5 MPa. The 300 mm stroke is supported by adjustable cushions (28 mm length) and a robust tie-rod body measuring 257 mm (A dimension) to absorb end-of-stroke impacts.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 300 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-SCD80X300
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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-SCD80X300 Is Used
Excavator Mechanisms
Drives symmetric push-pull linkages in construction equipment where equal force and non-rotating tooling are critical.
Shuttle Transfer Tables
Moves heavy structural components back and forth, using the dual rods to carry stopper blocks or sensors on both ends.
Double-Acting Presses
Applies 3175 N of force at 0.7 MPa for stamping or holding parts in heavy-machinery fabrication jigs.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300 the Right Cylinder?
This 80 mm bore provides 2268 N each way at 0.5 MPa; step down to a 63 mm bore if you only need 1402 N, or up to 100 mm for 3681 N. A single-rod SC cylinder is preferable if rear tooling is unnecessary, while heavy side loads demand a true guided cylinder rather than relying solely on the through-rod.
For exact replacements, match the 80 mm bore, 300 mm stroke, PT3/8 port, basic mounting, and no magnet. On a 300 mm stroke, the unsupported rod is susceptible to bending under offset loads—always use external guides to prevent premature seal wear.
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-SCD80X300 FAQ
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant. It is mechanically and dimensionally identical to the standard SCD80X300, offering the same 2268 N equal push and pull force at 0.5 MPa.
Yes. Because the 25 mm rod passes through both end caps, the effective area is identical on both sides. This yields exactly 2268 N of thrust and retraction force at 0.5 MPa, ensuring balanced speed and power.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCD Double-Rod Cylinders
Request a Quote for Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X300
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.