Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X800
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X800 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. Ø100mm bore, 800mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke800 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X800
The B04-SCD100X800 is an AirTAC double-acting, double-rod cylinder where the B04- prefix designates it as a construction-machinery dedicated variant of the standard SCD100X800, sharing identical mechanical specifications. Because the Ø25 mm piston rod passes through both end caps, the effective area is identical in both chambers, yielding an equal push and pull force of 3681 N at 0.5 MPa and a robust 6626 N at 0.9 MPa.
With an 800 mm stroke, this unit provides extended travel for heavy-equipment actuation. It features adjustable cushions with a 29 mm length to decelerate the payload smoothly at stroke ends, and a body length A(SCD) of 263 mm. The through-rod design enhances bearing load symmetry and provides anti-rotation benefits for demanding off-highway environments.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X800 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X800 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 800 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| 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, 29 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 (Ø100mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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-SCD100X800
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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-SCD100X800 Is Used
Heavy Equipment Actuation
Drives large covers, doors, or sorting grates on construction machinery where the B04 designation ensures suitability for rugged operating conditions.
Symmetric Shuttle Transfer
Moves heavy pallets or structural components back and forth on an 800 mm stroke, utilizing the identical push and pull force to maintain consistent cycle times.
Dual-Tool Positioning
Mounts tooling on both rod ends to actuate separate mechanisms simultaneously, leveraging the through-rod for better guidance and anti-rotation over the long stroke.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X800 the Right Cylinder?
Choose this 100 mm bore when you need substantial equal-thrust capability in both directions, such as 3681 N at 0.5 MPa. If your application requires less force, stepping down to an 80 mm bore yields 2268 N at 0.5 MPa, while a 125 mm bore increases output to 5734 N. For tasks needing only one-sided pushing, the single-rod SC series is lighter and more compact.
At 800 mm of travel, the unsupported rod length is significant; heavy side loads will cause bending, so an external guide or a fully guided cylinder is strongly recommended. To replace this unit, match the 100 mm bore, 800 mm stroke, PT1/2 port thread, basic mounting, and confirm whether a magnetic piston (-S) is required. Note that the air cushion only decelerates the piston; it does not lock or hold the load when air pressure is removed, so a mechanical lock or external brake is necessary for position holding.
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-SCD100X800 FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SCD100X800. It is mechanically identical to the base model, offering the same 100 mm bore, 800 mm stroke, and 3681 N equal push/pull force at 0.5 MPa.
A double-rod cylinder provides equal force in both directions because the rod area is subtracted from both sides. It also offers better rod guidance, anti-rotation characteristics, and allows tooling or a sensor flag to be mounted on the rear rod.
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-SCD100X800
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.