Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S 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, 250mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke250 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S
The B04-SCD32X250S is an AirTAC construction-machinery dedicated double-acting, double-rod cylinder. The B04- prefix designates it as a heavy-equipment builder variant, mechanically identical to the standard SCD32X250S. A through-rod design means the 12 mm piston rod exits both end caps, yielding identical thrust and retraction forces of 483 N at 0.7 MPa in either direction.
This symmetric layout is perfect for non-rotating pushers or dual-tooling tasks on site. The 250 mm stroke falls safely within the 1000 mm maximum standard stroke for this bore. The built-in magnet (-S) allows CMSG or DMSG sensors to track position along the 187 mm body length A(SCD), while adjustable 21 mm cushions protect the ends.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 250 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.
Theoretical Output Force (Ø32mm, double rod)
| 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.
Model Code: Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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-SCD32X250S Is Used
Excavator Panel Indexing
Uses the dual-ended rod to push and pull cab panels symmetrically during heavy-equipment assembly, relying on the equal 483 N force at 0.7 MPa.
Shuttle Transfer Stops
Employs the rear rod protrusion as a mechanical stopper for material shuttling on construction machinery conveyors, maintaining precise alignment.
Non-Rotating Tool Actuation
Leverages the through-rod guidance for anti-rotation control when actuating secondary clamping tools on mobile cranes or earthmoving equipment.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X250S the Right Cylinder?
Choose this 32 mm bore when an application demands equal 345 N force both ways at 0.5 MPa along with a rear rod for external stops. If your mechanism only needs force in one direction, the simpler single-rod AirTAC SC32X250 is lighter and more cost-effective. For heavy side loads, skip the tie-rod format entirely and select a proper guided cylinder to prevent rod bending.
To replace this unit, match the 32 mm bore, 250 mm stroke, PT1/8 port thread, basic mounting style, and the built-in magnet. Note that on a 250 mm stroke, the unsupported rod requires external guidance to prevent binding. The adjustable air cushion only decelerates the piston near stroke end; it does not lock or hold the load if air pressure is lost.
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-SCD32X250S FAQ
The B04- prefix indicates this is an AirTAC construction-machinery dedicated variant. It is mechanically identical to the standard SCD32X250S, offering the same 32 mm bore, 250 mm stroke, and 483 N equal push/pull force at 0.7 MPa, simply designated for heavy-equipment builders.
The double-rod design provides identical 345 N force in both directions at 0.5 MPa and offers better rod guidance for anti-rotation. The rear protruding rod can mount a stopper or sensor flag, which a single-rod SC cylinder cannot accommodate.
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