Airtac SDA Ultra Thin Cylinder SDA40X50
The AirTAC Airtac SDA Ultra Thin Cylinder SDA40X50 is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 50mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
- BoreØ40 mm
- Stroke50 mm
- Port sizePT1/8
- Acting typeDouble acting
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper (both ends)
- 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 SDA Ultra Thin Cylinder SDA40X50
The AirTAC SDA40X50 is a double-acting single-rod compact cylinder delivering 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted assembly unites the barrel, rear cover, piston, and rod into a highly shortened unit, drastically reducing axial mounting depth compared to conventional round-body designs. The 16 mm piston rod features a female M8x1.25 thread, and the body incorporates a hard-anodized bore for extended operational life.
This model relies on a fixed NBR bumper at each end to decelerate the stroke, meaning it is not an adjustable air cushion. Because this specific SKU lacks the -S magnet option, it cannot support magnetic position sensing. Operating at speeds between 30 and 500 mm/s, it handles a safe working load of roughly 377 N or a vertical lift of about 32 kg with a 2:1 safety margin.
Airtac SDA Ultra Thin Cylinder SDA40X50 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X50 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| 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 | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SDA Ultra Thin Cylinder SDA40X50
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDA Ultra Thin Cylinder SDA40X50 Is Used
CNC Fixture Clamping
Secures aluminum engine blocks onto machining centers using 628.3 N of extend force, where the shortened body avoids interfering with multi-axis spindle paths.
Carton Flap Folding
Drives mechanical arms to tuck corrugated box flaps prior to tape sealing, benefiting from the 50 mm stroke and non-adjustable NBR end stops to maintain rhythm.
Pallet Diverter Gate
Actuates routing gates on packaging lines to redirect heavy wooden pallets, utilizing the 16 mm rod and female M8x1.25 thread for robust load coupling.
Is the Airtac SDA Ultra Thin Cylinder SDA40X50 the Right Cylinder?
When sizing this actuator, stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N, allowing you to tune the force exactly to your fixture requirements. To finalize your order, confirm the 40 mm bore, 50 mm stroke, PT1/8 port, female rod thread, and that no magnet is required for this SKU.
Be aware that a standard compact cylinder does not hold its load if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only slows travel near the stroke end. If your mechanism must maintain vertical position without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short-body depth vs. a round-body cylinder
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
- ✓ Side load — avoid on a compact rod
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the short piston rod.
- check Very long strokes are unsuitable for the compact body.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDA Ultra Thin Cylinder SDA40X50 FAQ
At 0.5 MPa it provides 628.3 N push and 527.8 N pull. At 0.7 MPa it yields 879.6 N push and 738.9 N pull. The theoretical maximum push is 128 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this model uses fixed NBR bumpers to decelerate at stroke end, not a field-adjustable air cushion. Additionally, this SKU lacks a piston magnet, so it cannot accept reed or electronic switches; you would need the -S variant for sensing.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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