Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X125
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X125 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, 125mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke125 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X125
The B04-SCD80X125 is an AirTAC construction-machinery dedicated double-rod cylinder, mechanically identical to the standard SCD80X125. The B04- prefix simply designates its optimization for heavy-equipment builders without altering any physical specifications.
Featuring a 25 mm rod on both ends and PT3/8 ports, it generates 2268 N of equal thrust in both directions at 0.5 MPa, climbing to 4082 N at 0.9 MPa. The 125 mm stroke is managed by 28 mm adjustable cushions, while the retracted body length A(SCD) is 257 mm.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X125 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X125 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 125 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-SCD80X125
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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-SCD80X125 Is Used
Excavator Linkages
Drives symmetric positioning arms in heavy equipment where equal push and pull force prevents linkage binding under reversing loads.
Shuttle Transfer Tables
Moves pallets back and forth on construction machinery assembly lines using rear-rod tooling to maintain balanced inertia.
Non-Rotating Pushers
Pushes heavy components from both ends, utilizing the dual-rod structure to resist torsional twist during high-force actuation.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X125 the Right Cylinder?
Select this 80 mm bore when an application demands symmetric 2268 N force both ways and dual-end tooling. If your mechanism only requires thrust from one side, the single-rod AirTAC SC80X125 is a lighter alternative. For heavy side loads, a guided cylinder is superior since the through rod improves guidance but cannot replace a true linear bearing.
To replace this unit, match the 80 mm bore, 125 mm stroke, PT3/8 thread, basic mounting, and no magnet. SCD mounting accessories are limited to Basic, FA, LB, and TC (with TCM1) — no FB or CA/CB options 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-SCD80X125 FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant. It is mechanically identical to the standard SCD80X125, offering the same 80 mm bore, 125 mm stroke, and 2268 N equal push/pull force at 0.5 MPa.
No. The 28 mm adjustable cushions only decelerate the piston near the stroke ends. If the machine must hold a load without live air pressure, you must use an external mechanical lock or pilot-operated check valve.
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-SCD80X125
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.