Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X100S
The AirTAC Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X100S 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, 100mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke100 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X100S
The B04-SCD32X100S is AirTAC's construction-machinery dedicated variant of the standard SCD32X100S double-acting, double-rod cylinder. The B04- prefix designates it for heavy-equipment builders, but the mechanical specifications remain identical to the base model. It features a 32 mm bore, a 100 mm stroke, and a 12 mm piston rod that protrudes from both end caps.
Because the rod area is subtracted on both sides, the cylinder generates an identical 483 N of thrust and pull force at 0.7 MPa. This specific unit includes a built-in magnet (the S suffix), allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for position signaling. It uses adjustable cushions with a 21 mm length and has a body length A(SCD) of 187 mm.
Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X100S Technical Specifications
| Model | Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X100S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 100 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-SCD32X100S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×100 | 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-SCD32X100S Is Used
Excavator Control Linkages
Provides equal push and pull force for symmetrically actuating secondary control levers or covers on heavy construction equipment.
Shuttle Transfer Tables
The through-rod design supports mounting tooling or stoppers on the rear side, enabling precise bidirectional part shuttling.
Position Signaling
The built-in magnet allows external reed sensors to detect exact stroke endpoints on automated machinery cycles.
Is the Airtac B04-SCD Specialized Standard Cylinder for Construction Machinery B04-SCD32X100S the Right Cylinder?
Choose this 32 mm bore when an application requires 483 N of symmetrical force in both directions, such as shuttling or dual-tooling tasks. If your machine needs less force, stepping down is not an option in this series, but stepping up to a 40 mm bore provides 739 N at 0.5 MPa. If you only need one-way actuation and want a shorter body, the single-rod AirTAC SC series is a better fit. For loads requiring high side-load resistance, a dedicated guided cylinder is recommended over a through-rod design.
To replace this unit, match five points: the 32 mm bore, 100 mm stroke, PT1/8 port thread, basic mounting (or an SCD-compatible accessory like F-SC32LB), and the -S magnet option. Note that an SCD cylinder relies on live air pressure to move; it will drift if pressure is lost. The adjustable cushion only decelerates the piston near the stroke ends and does not function as a mechanical brake or locking device.
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-SCD32X100S FAQ
The B04- prefix indicates that this is a construction-machinery dedicated variant of the SCD32X100S. It is mechanically identical to the standard AirTAC SCD32X100S double-rod cylinder, featuring the same 32 mm bore, 100 mm stroke, and 483 N equal push/pull force at 0.7 MPa.
A double-rod cylinder provides identical force and speed in both directions because the rod area is subtracted from both chambers. It also offers better rod guidance, reduces rod twisting, and provides a rear rod extension for mounting secondary tooling or sensor flags.
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