Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X350
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X350 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, 350mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke350 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X350
The B04-SCD100X350 is AirTAC's construction-machinery dedicated variant of the SCD100X350 double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it matches the standard SCD exactly. It provides 5153 N of thrust in both directions at 0.7 MPa, utilizing a 25 mm diameter rod passing through both end caps for symmetrical force and anti-rotation stability.
Featuring a 350 mm stroke and PT1/2 ports, this double-acting tie-rod cylinder uses adjustable cushions of 29 mm to decelerate the piston near end caps. The body length A(SCD) is 263 mm. Note that the adjustable cushion only decelerates the piston; it does not lock or hold a load. If position holding is required without live air pressure, an external mechanical lock or pilot-operated check valve is necessary.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X350 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X350 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 350 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-SCD100X350
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | 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-SCD100X350 Is Used
Heavy Equipment Actuation
Drives symmetrical pushing and pulling mechanisms on construction machinery where the B04- prefix indicates dedicated heavy-equipment suitability.
Shuttle Transfer Tables
Moves parts back and forth with identical 5153 N force in both directions, leveraging the through-rod design for balanced bearing loads.
Non-Rotating Tooling Mounts
Carries dual tooling or stopper plates on both rod ends, using the double-rod configuration to resist twist during heavy machining operations.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X350 the Right Cylinder?
This 100 mm bore offers 3681 N at 0.5 MPa. If your application needs less force, stepping down to an 80 mm bore yields 2268 N at 0.5 MPa. If you do not require rear-side tooling or equal bidirectional force, a single-rod SC cylinder provides a shorter overall length. For heavy side loads, a proper guided cylinder is superior to relying solely on the through-rod guidance.
With a 350 mm stroke, the unsupported rod length increases bending risks under side loads; always use an external guide to manage deflection. Replacement requires matching bore, stroke, PT thread, SCD mounting accessory, and magnet option. Standard strokes max out at 1500 mm for this bore.
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-SCD100X350 FAQ
The B04- prefix marks this as AirTAC's construction-machinery dedicated line. It is mechanically identical to the standard SCD100X350 double-rod cylinder, offering the same 100 mm bore, 350 mm stroke, and 5153 N equal push/pull force at 0.7 MPa.
A double-rod cylinder provides equal force and speed in both directions because the rod area is subtracted from both chambers. It also offers a rear rod for mounting a sensor flag or secondary tooling, and improves anti-rotation guidance compared to a single-rod design.
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