Airtac SCD Standard Cylinder SCD40X93
The AirTAC Airtac SCD Standard Cylinder SCD40X93 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø16mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø40mm bore, 93mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Rod (both ends)Ø16 mm
- Stroke93 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac SCD Standard Cylinder SCD40X93
The SCD40X93 is a 40 mm bore double-rod pneumatic cylinder with a non-standard 93 mm stroke, built for tasks demanding identical thrust in both directions. Because the Ø16 mm rod passes through both end caps, the effective piston area is equal on each side, producing a balanced 528 N of force at 0.5 MPa (950 N at the maximum operating pressure of 0.9 MPa). This symmetry eliminates the force differential found in single-rod cylinders, making speed and load control far more predictable.
With a body length A(SCD) of 191 mm and a 21 mm adjustable air cushion at each end, the SCD40X93 decelerates the piston smoothly before end-of-stroke contact. The PT1/4 ports and M12x1.25 rod threads are standard. This model is a basic configuration with no magnet, TPU seals, and PT threads, ideal for general-purpose dual-sided actuation within the -20 to +70 °C range.
Airtac SCD Standard Cylinder SCD40X93 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD40X93 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø40 mm |
| Rod diameter | Ø16 mm (both ends) |
| Stroke | 93 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 1200 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 (Ø40mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | 739 N |
| Max (@1.0 MPa) | 108 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 SCD40X93
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 40 | Bore size in mm. |
| ×93 | 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 SCD40X93 Is Used
Two-Sided Transfer Shuttles
The through-rod lets you mount a tooling plate on the front and a counterbalance or second gripper on the rear, moving both simultaneously with equal force for precise part transfer.
Symmetric Clamping Fixtures
Use the rear rod extension to drive a linkage for a secondary clamp, ensuring both sides of a fixture close with the identical 528 N force at 0.5 MPa for even pressure distribution.
Non-Rotating Pusher Stations
The dual-rod support provides better resistance to rotation than a single-rod cylinder, making it suitable for pushing components into a press or aligning parts without adding an external guide rail.
Is the Airtac SCD Standard Cylinder SCD40X93 the Right Cylinder?
Select the SCD40X93 when you need a compact cylinder to operate tooling from both ends or to push and pull a load with exactly the same force. If 528 N at 0.5 MPa is insufficient, stepping up to the 50 mm bore SCD series provides 825 N each way. For applications that only require force from one end, the single-rod SC40 series is a lighter and more cost-effective alternative.
This 93 mm stroke is non-standard, so it is a made-to-order item. When replacing an existing unit, match the 40 mm bore, 93 mm stroke, PT1/4 ports, basic mounting, and ensure the replacement is a genuine AirTAC SCD double-rod cylinder. For strokes over 300 mm, always evaluate side-loading on the exposed rear rod, but at 93 mm, rod deflection is minimal under purely axial loads.
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 SCD40X93 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 528 N, at 0.7 MPa it outputs 739 N, and at the maximum operating pressure of 0.9 MPa it reaches 950 N. The theoretical force at 1.0 MPa is 108 kgf.
Choose the SCD40 when you need the piston rod to perform work on both ends of the cylinder, or when you require perfectly equal force and speed in both directions. The through-rod also provides better guidance and anti-rotation properties than a single-rod cylinder, though it is not a substitute for a fully guided unit under high side loads.
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