Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X400S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X400S 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. Ø63mm bore, 400mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke400 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X400S
The B04-SCD63X400S is AirTAC's construction-machinery dedicated variant of the SCD63X400S double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the standard model: a 63 mm bore, 400 mm stroke, double-acting tie-rod actuator with a through-rod exiting both end caps.
Because the rod subtracts area from both chambers, thrust is perfectly symmetrical at 1402 N in either direction at 0.5 MPa, climbing to 2523 N at 0.9 MPa. The built-in magnet (-S) lets CMSG or DMSG sensors track piston position along the 210 mm body length A(SCD). Adjustable 28 mm cushions decelerate the 30-800 mm/s travel at each end.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X400S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X400S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 400 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, 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 (Ø63mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 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-SCD63X400S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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-SCD63X400S Is Used
Excavator Linkage
Drives symmetric push/pull functions on heavy-equipment pilot linkages where equal force both ways prevents linkage binding.
Shuttle Transfer
Moves parts between two stations on a construction-machinery assembly line, using the rear rod for a stopper flag.
Non-Rotating Press
Applies 2523 N of clamping force at 0.9 MPa with better anti-rotation resistance than a single-rod actuator.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X400S the Right Cylinder?
This 63 mm bore is a solid step up from the 50 mm size (825 N at 0.5 MPa) when your construction fixture needs higher equal-direction force without jumping to the 80 mm class (2268 N). If the application only requires thrust from one side, a standard single-rod AirTAC SC cylinder saves space and weight. For heavy off-center loads, choose a dedicated guided cylinder instead of relying on the through-rod.
At 400 mm of stroke, the unsupported rod is susceptible to bending under side loads; always use an external guide rail to support the tooling. To replace this unit, match the 63 mm bore, 400 mm stroke, PT1/4 port, basic mounting, and the -S magnet. Note that air pressure alone will not hold a load if supply drops—a mechanical lock is required for safety.
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-SCD63X400S FAQ
The B04- prefix marks this as AirTAC's construction-machinery dedicated line. It is mechanically identical to the standard SCD63X400S, offering the same 63 mm bore, 400 mm stroke, and 1402 N equal push/pull force at 0.5 MPa.
The through-rod design provides identical 1402 N force and 30-800 mm/s speed in both directions, allows mounting tooling on the rear rod, and improves bearing load distribution compared to a single-rod SC cylinder.
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-SCD63X400S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.