Airtac SCD Standard Cylinder SCD250X160
The AirTAC Airtac SCD Standard Cylinder SCD250X160 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø50mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø250mm bore, 160mm stroke, PT1" ports and adjustable end cushioning.
- BoreØ250 mm
- Rod (both ends)Ø50 mm
- Stroke160 mm
- Port sizePT1"
- Rod configDouble rod (through)
- CushionAdjustable, 40 mm
About the Airtac SCD Standard Cylinder SCD250X160
The SCD250X160 is a large-bore double-rod pneumatic cylinder built for heavy symmetrical actuation. Because the 50 mm rod passes through both end caps, the effective pressure area is identical on each side, producing an equal 23562 N of force in both directions at 0.5 MPa. At the maximum operating pressure of 0.9 MPa, thrust reaches 42412 N, making it suitable for pressing, clamping, or transferring substantial loads where balanced output is non-negotiable.
This ISO 6430 class tie-rod cylinder features a 160 mm standard stroke with an adjustable air cushion at each end (40 mm cushion length) to decelerate the high-inertia piston smoothly. The G1 inch ports supply the large air volume needed, and the M42x2 threaded rod ends on both sides allow tooling to be mounted front and rear. The retracted body length A(SCD) is 435 mm, providing a reference for fitting this dual-rod actuator into machine frames.
Airtac SCD Standard Cylinder SCD250X160 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD250X160 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Rod diameter | Ø50 mm (both ends) |
| Stroke | 160 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1" |
| Rod thread | M42×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø250mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 23562 N | 23562 N |
| 0.7 MPa | 32987 N | 32987 N |
| Max (@1.0 MPa) | 4805 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 SCD250X160
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 250 | Bore size in mm. |
| ×160 | 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 SCD250X160 Is Used
Reciprocating Shuttle Tables
The equal force and speed in both directions moves heavy shuttle tables or transfer carts symmetrically, preventing uneven wear and ensuring consistent cycle times for pallet-handling systems.
Two-Sided Press Frames
Mount tooling on both rod ends to perform simultaneous pressing, staking, or crimping operations on two workpieces from a single actuator, doubling throughput in assembly cells.
Non-Rotating Alignment Stations
The dual-rod construction inherently resists piston rotation. Use the rear rod extension to mount a sensor flag for external stroke confirmation without adding a rotary alignment coupling.
Is the Airtac SCD Standard Cylinder SCD250X160 the Right Cylinder?
Select the SCD250X160 when your application demands symmetric, high-force linear motion up to 23562 N at standard plant pressure. If your force requirement is lower, stepping down to the SCD200 bore reduces the output to 15080 N at 0.5 MPa, which may allow for a smaller footprint and lower air consumption. For tasks that only need a push stroke and a simple spring or gravity return, a single-rod SC250 series cylinder is a more economical choice, as it eliminates the cost and extended length of the rear rod.
This double-rod design offers better guidance than a single-rod cylinder, but at a 160 mm stroke, the long unsupported rods are not immune to side loads. If the tooling applies any off-axis force, pair the cylinder with an external linear guide or consider a guided cylinder to prevent rod bending and premature bushing wear. To replace an existing unit, match the 250 mm bore, 160 mm stroke, G1 (PT) port thread, and ensure the mounting style is compatible from the SCD subset (Basic, FA, LB, or TC).
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 SCD250X160 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa you get 23562 N, at 0.7 MPa you get 32987 N, and at the maximum operating pressure of 0.9 MPa the force is 42412 N in both directions.
Choose the SCD when you need identical force and speed on the extend and retract strokes, or when you need to mount tooling, a mechanical stop, or a sensor target on the rear rod. The through-rod design also provides better resistance to side load and piston rotation than a single-rod cylinder of the same bore.
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