
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X150S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø12mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø32mm bore, 150mm stroke, PT1/8 ports and adjustable end cushioning.
The AirTAC B04-SCD32X150S is a double-acting, double-rod pneumatic cylinder engineered for construction machinery. The B04- prefix denotes the construction-machinery dedicated variant of the standard SCD32X150S, meaning it is mechanically identical to the base model. A through-rod design protrudes from both end caps, yielding identical thrust and retraction forces of 483 N at 0.7 MPa.
Because the rod subtracts area equally on both sides, you get balanced 345 N force at 0.5 MPa in either direction. The 12 mm diameter rod operates at speeds of 30-800 mm/s, while the built-in magnet (-S) allows CMSG or DMSG sensors to track piston position along the 187 mm body length A(SCD). Adjustable cushions at both ends provide 21 mm of end-of-stroke deceleration.
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X150S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 150 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1000 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 346 N | 346 N |
| 0.7 MPa | 484 N | 484 N |
| Max (@1.0 MPa) | 70 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.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | 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.
Provides symmetric push and pull force for pilot valve actuation on heavy equipment, ensuring consistent response regardless of direction.
The rear rod extension serves as a mounting point for a physical stopper or sensor flag on automated material handling carts.
Allows tooling to be fixed on both ends of the cylinder, enabling a push-pull work cycle that doubles throughput on compact jigs.
Choose this 32 mm bore when an application demands equal force both ways, such as a dual-tooling shuttle or a non-rotating pusher. If your mechanism only needs a standard extending motion, the single-rod AirTAC SC32X150S is lighter and simpler. If side loads are high, a dedicated guided cylinder is superior to relying solely on the through-rod for anti-rotation. To replace this unit, match the 32 mm bore, 150 mm stroke, PT1/8 port, basic mounting, and the -S magnet option.
Double-rod checklist
The B04- prefix indicates this is AirTAC's construction-machinery dedicated variant. It is mechanically identical to the standard SCD32X150S, sharing the exact same 32 mm bore, 150 mm stroke, and physical specifications.
The double-rod design provides equal push and pull forces of 483 N at 0.7 MPa, unlike a single-rod cylinder where pull force is lower. It also offers better rod guidance and allows tooling or sensors to be mounted on the rear rod.
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