Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X175
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X175 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, 175mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke175 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X175
The B04-SCD100X175 is AirTAC's construction-machinery dedicated variant of the SCD100X175 double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but mechanically it is identical to the standard SCD: a 100mm bore, 175mm stroke double-acting actuator with a 25mm rod protruding from both end caps. Because the rod area is subtracted on both sides, it generates an identical 3681N of thrust in both directions at 0.5 MPa, climbing to 6626N at its 0.9 MPa maximum operating pressure.
This symmetric force makes the cylinder ideal for two-sided actuation and non-rotating pushers on heavy machinery. The through-rod design improves bearing load distribution and provides a rear extension for mounting a stopper or sensor flag. It features adjustable cushions with a 29mm length to decelerate the piston smoothly at stroke ends, and its retracted body length follows the 263mm A(SCD) standard, which is longer than an equivalent single-rod SC cylinder.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X175 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X175 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 175 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-SCD100X175
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×175 | 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-SCD100X175 Is Used
Excavator Control Linkages
Provides robust, equal push and pull force for moving heavy counterweights or actuating secondary linkages on earthmoving equipment where symmetric thrust prevents linkage binding.
Shuttle Transfer Tables
Drives heavy material pallets back and forth on construction machinery conveyors, utilizing the through-rod to mount a rear stopper flag that triggers limit switches.
Non-Rotating Pushers
Pushes heavy components from both sides during assembly. The double-rod configuration offers better rod guidance and anti-rotation characteristics than a standard single-rod actuator.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X175 the Right Cylinder?
Choose this 100mm bore when an application demands high equal bidirectional force (3681N at 0.5 MPa). If your machinery requires less thrust, stepping down to the 80mm bore yields 2268N each way while saving space; if you need more power, the 125mm bore provides 5734N. A single-rod SC cylinder is preferable if you only need unidirectional output and want a shorter body, while a true guided cylinder is necessary for handling severe side loads without bending the rod.
For replacements, match the 100mm bore, 175mm stroke, PT1/2 port thread, basic mounting style, and non-magnet configuration exactly. Note that the SCD mounting subset includes Basic, FA, LB, and TC styles, but omits FB flange and CA/CB clevis options. At 175mm stroke the unsupported rod length is moderate, but always verify external guide support if heavy off-center loads are present.
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-SCD100X175 FAQ
The B04- prefix indicates that this is a construction-machinery dedicated variant of the SCD100X175. It is mechanically identical to the standard SCD100X175 double-rod cylinder, offering the same 100mm bore, 175mm stroke, and 3681N equal push/pull force at 0.5 MPa.
Yes. Because the 25mm piston rod extends through both end caps, the effective pressure area is identical on both sides. This results in an equal push and pull force of 3681N at 0.5 MPa and 6626N at 0.9 MPa. Note that the adjustable cushions only decelerate the piston at stroke ends; they do not lock or hold the load if air pressure is lost.
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