Airtac SCD Standard Cylinder SCD80X400SLB
The AirTAC SCD Standard Cylinder SCD80X400SLB 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. Ø80mm bore, 400mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke400 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SCD Standard Cylinder SCD80X400SLB
The SCD80X400SLB delivers identical force in both directions, producing 2268 N of thrust at 0.5 MPa thanks to its double-rod design where the 25 mm rod passes through both end caps. This symmetry eliminates force differentials, making it ideal for applications where a consistent, balanced stroke is critical, such as operating a dual-sided tool or a transfer mechanism that must not drift faster in one direction.
This configuration includes a built-in magnet (S suffix) for direct mounting of CMSG/DMSG sensors, and is supplied with LB-style axial foot mounts (F-SC80LB) for secure surface installation. With a 400 mm stroke and a body length A of 257 mm, the tie-rod construction provides robust guidance, though for this longer stroke an external guide is recommended if the 25 mm through-rod faces any significant side load.
Airtac SCD Standard Cylinder SCD80X400SLB Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X400SLB |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 400 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| 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, 28 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 (Ø80mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 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 SCD Standard Cylinder SCD80X400SLB
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 SCD Standard Cylinder SCD80X400SLB Is Used
Bidirectional Shuttle Tables
The equal 2268 N push/pull force at 0.5 MPa ensures a linear shuttle moves at a consistent speed and with identical thrust in both directions, preventing product shifting on the table.
Dual-Sided Staking or Pressing
Use the front rod for a pressing tool and the rear rod for a stripper plate or return stop, creating a compact, self-contained two-step actuation sequence from one cylinder.
Rear-Mounted Stroke Sensing
The built-in magnet (S) and the exposed rear rod allow you to mount CMSG/DMSG sensors on the barrel and a secondary sensor flag on the back rod for redundant end-of-stroke detection.
Is the Airtac SCD Standard Cylinder SCD80X400SLB the Right Cylinder?
Step up to the SCD100 bore if your application requires more than the 2268 N of force this 80 mm bore provides at 0.5 MPa; the 100 mm bore delivers 3681 N. If you only need force from one end and want a more compact, lower-cost unit, a single-rod SC80 cylinder is the better choice. For applications with high side loads, a guided cylinder is necessary, as the dual-rod design offers better guidance than a single rod but is not a substitute for a true external guide system.
For a direct replacement, match the 80 mm bore, 400 mm stroke, PT port thread, SCD-specific LB foot mounting, and the integrated magnet (-S). At a 400 mm stroke, always assess the potential for rod bending on the unsupported rear rod; adding an external guide rail or switching to a guided cylinder assembly is a prudent way to manage off-axis forces.
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 SCD Standard Cylinder SCD80X400SLB FAQ
Push and pull forces are identical in a double-rod cylinder. For the 80 mm bore with a 25 mm rod, the effective force is 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need identical force and speed in both directions, or when you require a rear rod extension to mount a sensor flag, a mechanical stop, or a secondary tool. The through-rod also provides better support for the piston, reducing uneven bushing wear compared to a single-rod cylinder.
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