Airtac SDA Ultra Thin Cylinder SDA40X45
The AirTAC Airtac SDA Ultra Thin Cylinder SDA40X45 is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 45mm 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
- Stroke45 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 SDA40X45
The AirTAC SDA40X45 is a double-acting single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston and rod into a highly shortened unit, drastically reducing axial mounting depth where a conventional round-body actuator would be too long. The 16 mm piston rod utilizes a female M8x1.25 thread end, while the hard-anodized bore operates on a two-way seal at speeds between 30 and 500 mm/s.
End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require an external shock absorber or a slowed approach. Because this specific SKU lacks the -S option, it has no piston magnet and cannot host reed or electronic switches. Operating pressure spans 0.15-1.0 MPa, yielding a safe working load around 377 N (roughly 60% of the 0.5 MPa push figure) and a vertical lift capacity near 32 kg with a 2:1 safety margin.
Airtac SDA Ultra Thin Cylinder SDA40X45 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X45 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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 SDA40X45
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SDA40X45 Is Used
Injection Mold Ejection
Provides compact 628.3 N push strokes to eject plastic parts from tight tooling cavities where overall actuator length is restricted.
Carton Flap Folding
Drives 45 mm folding strokes on packaging lines to tuck corrugated flaps prior to sealing, fitting neatly within narrow machine frames.
Pallet Diverter Gate
Actuates routing gates to redirect heavy pallets on a conveyor, utilizing the 16 mm rod to withstand lateral guide impacts.
Is the Airtac SDA Ultra Thin Cylinder SDA40X45 the Right Cylinder?
When sizing this 40 mm bore, stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, whereas stepping up to the SDA50 provides 981.7 N, allowing you to tune the actuator to your exact payload. Keep in mind that a standard double-acting cylinder like this will drift and cannot hold a load if air pressure drops or the valve is centered; maintaining vertical loads safely requires an external rod lock or a pilot-operated check valve. To finalize your order, confirm the 40 mm bore, 45 mm stroke, PT1/8 port, female rod thread, and the absence of a magnet.
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 SDA40X45 FAQ
At 0.5 MPa, this 40 mm bore cylinder outputs 628.3 N of push force and 527.8 N of pull force. At 0.7 MPa, push increases to 879.6 N. The theoretical maximum push is 128 kgf at the 1.0 MPa operating pressure limit.
No, this specific SKU does not include the -S piston magnet, so it cannot host reed or electronic switches. You would need to specify the -S option to enable sensing, and note that end stops use a fixed NBR bumper, not an adjustable cushion.
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