Airtac SCD Standard Cylinder SCD125X150
The AirTAC Airtac SCD Standard Cylinder SCD125X150 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø32mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø125mm bore, 150mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ125 mm
- Rod (both ends)Ø32 mm
- Stroke150 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD125X150
The SCD125X150 is a double-acting, double-rod pneumatic cylinder built for applications that demand identical force and speed in both directions. With a 125 mm bore and a 32 mm rod extending from both ends, it produces a balanced 5734 N of thrust each way at 0.5 MPa, making it ideal for symmetrical transfer mechanisms or tooling mounted on the rear rod.
This ISO 6430 class tie-rod cylinder features an adjustable air cushion (28 mm length) at both ends to decelerate the piston smoothly. The 150 mm stroke keeps the assembly compact, while the 291 mm body length (A dimension) provides a rigid base. Operating on filtered air from 0.15 to 1.0 MPa, it handles temperatures from -20 to +70 °C with its default TPU seals.
Airtac SCD Standard Cylinder SCD125X150 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD125X150 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Rod diameter | Ø32 mm (both ends) |
| Stroke | 150 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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, 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 (Ø125mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | 8027 N |
| Max (@1.0 MPa) | 1169 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 SCD125X150
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 125 | 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.
Where the Airtac SCD Standard Cylinder SCD125X150 Is Used
Bidirectional Shuttle Tables
The equal push/pull force of 5734 N at 0.5 MPa makes the SCD125X150 perfect for shuttle tables where a pallet or fixture must be moved with identical speed and power in both directions, ensuring consistent cycle times.
Dual-Sided Tooling Actuation
Mount a primary tool on the front rod and a secondary sensor flag or stripper plate on the rear rod. The 32 mm through rod provides inherent anti-rotation, keeping both tools aligned without needing a separate rail.
Symmetric Part Transfer
Use the rear rod extension to operate a limit switch for end-of-stroke confirmation while the front rod pushes a heavy part onto a conveyor. The 150 mm stroke offers ample travel for lateral transfer operations.
Is the Airtac SCD Standard Cylinder SCD125X150 the Right Cylinder?
This 125 mm bore model suits tasks needing roughly 5734 N of balanced force. If your load requires more thrust, stepping up to the SCD160 (9425 N at 0.5 MPa) is the logical move; for lighter, faster cycling, the SCD100 provides 3681 N. Because the rod protrudes from both ends, ensure there is clearance behind the cylinder for the full stroke extension.
For replacement, match the bore, 150 mm stroke, PT port thread, and the basic mounting configuration. If your application involves significant side loading, remember that while the double rod improves guidance over a single-rod design, a dedicated externally guided cylinder is the correct choice for absorbing high transverse forces. For a 150 mm stroke, rod bending is rarely a concern, but always align the load axially.
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 SCD125X150 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it delivers 5734 N, at 0.7 MPa it's 8028 N, and at the maximum operating pressure of 0.9 MPa, it generates 10321 N of thrust in both directions.
Choose the SCD when you need equal force and speed in both directions, or when you require a rear rod extension for mounting sensors, cams, or secondary tooling. The through rod also provides better support for the piston, reducing bearing wear compared to a single-rod cylinder, but it does require space for the rod to extend from the rear cap.
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