Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X150
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X150 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, 150mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke150 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X150
The B04-SCD100X150 is AirTAC's construction-machinery dedicated variant of the SCD100X150 double-rod cylinder, sharing the exact same physical specs. The B04- prefix simply designates it for heavy-equipment builders. As a double-acting, double-rod actuator, the piston rod passes through both end caps, yielding identical push and pull forces of 3681 N at 0.5 MPa and 6626 N at 0.9 MPa.
With a 150 mm stroke and a 25 mm rod protruding from both ends, this model provides symmetric bearing loading and enhanced anti-rotation characteristics. It features adjustable cushions (29 mm length) to decelerate the piston near end caps and a body length A(SCD) of 263 mm. Note that cushions only slow the piston; they do not lock or hold a load if air pressure is lost.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X150 Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X150 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 150 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-SCD100X150
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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-SCD100X150 Is Used
Heavy Equipment Actuation
Drives symmetric push/pull mechanisms on construction machinery where equal force in both directions is required for shifting heavy components.
Dual-Tooling Transfer
Carries tooling or stopper blocks on both rod ends to alternate actions between two stations without needing a second cylinder.
Anti-Rotation Pusher
Uses the dual through-rod design to resist twisting during extension, ensuring precise alignment when pushing heavy structural parts.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD100X150 the Right Cylinder?
Choose this 100 mm bore when your heavy equipment needs 3681 N of thrust each way at 0.5 MPa. If your mechanism requires less force, stepping down to an 80 mm bore yields 2268 N each way. If you only need single-sided actuation without rear tooling, a standard single-rod SC cylinder is lighter and more compact. For applications with severe side loads, a dedicated guided cylinder is superior, as the through rod provides better guidance than a single rod but is not a true linear guide.
To replace this unit, match the 100 mm bore, 150 mm stroke, PT1/2 port thread, basic mounting, and no magnet. If your construction machinery swings or pivots, select the TC centre trunnion mount (order with TCM1 bracket, part code F-SC100TC) instead of the basic body.
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-SCD100X150 FAQ
The B04- prefix indicates this is a construction-machinery dedicated variant of the SCD100X150. It is mechanically identical to the standard SCD100X150 double-rod cylinder, with the same 100 mm bore, 150 mm stroke, and PT1/2 port.
A double-rod cylinder provides identical push and pull forces (3681 N at 0.5 MPa for this bore) because the rod area is subtracted from both chambers. It also allows mounting tooling on the rear rod and offers better resistance to rotation than a single-rod cylinder.
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