Airtac SDA Ultra Thin Cylinder SDA40X30-B-H
The AirTAC Airtac SDA Ultra Thin Cylinder SDA40X30-B-H is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 mm
- Port sizePT1/8
- Acting typeDouble acting
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDA Ultra Thin Cylinder SDA40X30-B-H
The AirTAC SDA40X30-B-H 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 short riveted body minimizes axial mounting depth, fitting into tight machine footprints where standard round-body units fail. The bore is hard-anodized and uses a two-way piston seal for reliable operation.
This specific SKU features a male M14x1.5 threaded piston rod for robust load coupling, replacing the default female M8x1.25. It also includes fluororubber (FKM) seals for enhanced thermal and oil resistance. End-stopping relies on a fixed NBR bumper that decelerates the piston near stroke end rather than an adjustable air cushion. Note that without the -S magnet option, this unit cannot host reed or electronic switches.
Airtac SDA Ultra Thin Cylinder SDA40X30-B-H Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X30-B-H |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 SDA40X30-B-H
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SDA40X30-B-H Is Used
CNC Fixture Clamping
Secures aluminum housings during machining, utilizing the 628.3 N extend force to hold parts rigidly against cutting forces.
Carton Flap Folding
Drives mechanical arms to fold corrugated box flaps at high speed, where the short 30 mm stroke and fixed NBR bumper absorb the end stop.
Pallet Diverter Gate
Actuates routing gates on a packaging line, with the male M14x1.5 rod providing a durable threaded interface for the linkage mechanism.
Is the Airtac SDA Ultra Thin Cylinder SDA40X30-B-H the Right Cylinder?
When sizing this 40 mm bore, step down to the SDA32 for 402.1 N push at 0.5 MPa, or step up to the SDA50 for 981.7 N push at 0.5 MPa. Based on the 628.3 N push figure, a safe working load is roughly 377 N (about 60% capacity), translating to a vertical lift of approximately 32 kg with a 2:1 safety margin. To order, confirm the 40 mm bore, 30 mm stroke, PT1/8 port, male M14x1.5 rod thread, and FKM seal option.
A plain compact cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end and does not act as a lock or brake. If your application must hold a load without live pressure, 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 SDA40X30-B-H FAQ
This double-acting cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, and 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15-1.0 MPa, with a speed of 30-500 mm/s.
No, this specific SKU lacks the -S piston magnet, so it cannot host reed or electronic switches. You would need the -S variant for sensing. Additionally, it uses a fixed NBR bumper for end deceleration, not an adjustable air cushion, so external shock absorbers are recommended for high-energy cycles.
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