Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X75
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X75 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, 75mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke75 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X75
The B04-SCD63X75 is an AirTAC double-acting, double-rod cylinder where the B04- prefix designates it as a construction-machinery dedicated variant of the standard SCD63X75. It is mechanically identical to the base model, delivering 1402 N of equal push and pull force at 0.5 MPa. The through-rod design protrudes from both end caps, providing symmetrical bearing loading and superior anti-rotation characteristics for heavy equipment.
With a 63 mm bore and 75 mm stroke, this unit features a 20 mm diameter rod on both ends and PT1/4 ports. The adjustable cushion strokes are 28 mm, ensuring smooth deceleration at stroke ends. Its retracted length is based on the 210 mm body length A(SCD), which is longer than a single-rod SC cylinder to accommodate the dual protruding rods.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X75 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X75 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 75 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-SCD63X75
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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-SCD63X75 Is Used
Excavator Linkage
Drives symmetric pushing and pulling movements on heavy-duty construction equipment linkages where equal force both ways prevents linkage binding.
Shuttle Transfer
Actuates material transfer tables on concrete pumps or pavers, utilizing the rear rod for mounting a stopper block or stroke sensor flag.
Dual-Tool Actuation
Operates opposing tooling heads simultaneously from a single cylinder body, saving space and ensuring synchronized movement in tight machine bays.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD63X75 the Right Cylinder?
Select this 63 mm bore when an application demands 1402 N of thrust in both directions, such as synchronizing two-sided mechanisms on an excavator or loader. If your machine requires less force, stepping down to a 50 mm bore yields 825 N each way; if more power is needed, an 80 mm bore provides 2268 N. A single-rod SC cylinder is preferable if rear tooling or symmetric loading is unnecessary, while a true guided cylinder is required for heavy off-center side loads.
For direct replacement, match the 63 mm bore, 75 mm stroke, PT1/4 port thread, basic mounting style, and confirm whether a magnetic piston (-S) for CMSG/DMSG sensors was originally present. The adjustable air cushion only decelerates the piston near end caps and does not lock the load; if the mechanism must hold position without live air pressure, fit an external mechanical lock or pilot-operated check valve.
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-SCD63X75 FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SCD63X75. It shares the exact same physical specifications, 1402 N equal push/pull force, and dimensions as the standard model, simply designated for heavy-equipment builders.
The double-rod design ensures push and pull forces are identical at 1402 N (0.5 MPa) because the 20 mm rod area is subtracted from both chambers. It also provides better rod guidance, anti-rotation resistance, and a rear rod for mounting secondary tooling or sensors.
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-SCD63X75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.