Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X350S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X350S 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, 350mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke350 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X350S
The B04-SCD80X350S is AirTAC's construction-machinery dedicated variant of the SCD80X350S double-rod cylinder, mechanically identical to the standard unit. The B04- prefix simply denotes its dedication to heavy-equipment builders. Because the piston rod passes through both end caps, the effective area is identical in both chambers, yielding an equal push and pull force of 3175 N at 0.7 MPa.
Featuring a 350 mm stroke and a 25 mm rod protruding from both ends, this model provides excellent anti-rotation characteristics and symmetric bearing loading. It includes an adjustable cushion of 28 mm to decelerate the piston at stroke ends, and a built-in magnet for CMSG/DMSG/EMSG sensor tracking. The retracted length is longer than a single-rod SC cylinder due to its body length A(SCD) of 257 mm.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X350S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X350S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 350 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-SCD80X350S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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-SCD80X350S Is Used
Heavy Equipment Actuation
Drives robust bidirectional mechanisms on construction machinery where the B04- prefix indicates dedicated heavy-equipment integration and equal force both ways is required.
Shuttle Transfer Tables
Moves materials symmetrically using tooling mounted on both rod ends, ensuring balanced loading and preventing rotation during transit.
Non-Rotating Pushers
Pushes and pulls heavy workpieces with high lateral stability, leveraging the dual-rod guidance to resist twisting forces in compact machinery.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD80X350S the Right Cylinder?
This 80 mm bore delivers 3175 N of thrust each way at 0.7 MPa, making it a solid fit for heavy-duty construction-machine actuation. If your application requires less force, stepping down to a 63 mm bore yields 1962 N. If you only need unidirectional thrust and want to save space, a single-rod SC cylinder is preferable, though you lose the equal bidirectional force and rear-rod tooling mounting.
For a 350 mm stroke, the extended unsupported rod is susceptible to bending under side loads; use an external guide rail or select a fully guided cylinder to prevent premature seal wear. When replacing this unit, match the 80 mm bore, 350 mm stroke, PT3/8 port, basic mounting, and the -S magnet option exactly.
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-SCD80X350S FAQ
The B04- prefix designates this as a construction-machinery dedicated cylinder. It is mechanically identical to the standard SCD80X350S, offering the same 3175 N equal push/pull force, 350 mm stroke, and PT3/8 port.
No. The adjustable 28 mm cushion only decelerates the piston near the end of stroke; it does not lock or hold the load. If the machine must hold position without live air pressure, an external mechanical lock or rod brake is required.
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-SCD80X350S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.