Airtac SDA Ultra Thin Cylinder SDA40X30-B
The AirTAC Airtac SDA Ultra Thin Cylinder SDA40X30-B 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
The AirTAC SDA40X30-B is a double-acting, single-rod compact cylinder engineered to deliver a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth compared to conventional round-body units, making it highly effective for machinery where space savings are critical. The unit operates at speeds between 30-500 mm/s.
This specific SKU is configured with a male M14x1.5 piston rod thread (denoted by the -B option) for secure mechanical coupling to your load, alongside a 16 mm rod diameter and PT1/8 porting. The bore interior is hard-anodized for longevity, while fixed NBR bumpers absorb end-stop impact. Note that this configuration lacks a piston magnet, so it cannot host magnetic switches without the -S option.
Airtac SDA Ultra Thin Cylinder SDA40X30-B Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X30-B |
|---|---|
| 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
| 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 Is Used
Injection Mold Ejection
Drives the ejection plate inside a plastics molding cell, utilizing the male M14x1.5 rod end to thread directly into the ejector assembly for reliable part release.
Carton Flap Folding
Deploys a 30 mm stroke to tuck corrugated carton flaps on a continuous packaging line, where the compact riveted body minimizes frame interference.
Pallet Diverter Gate
Actuates a routing gate to redirect heavy pallets, applying 628.3 N of push force at 0.5 MPa to overcome the lateral friction of the conveying surface.
Is the Airtac SDA Ultra Thin Cylinder SDA40X30-B the Right Cylinder?
When sizing this actuator, evaluate your force margins both ways: stepping down to the SDA32 yields 402.1 N of push force at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. At 628.3 N, this 40 mm bore achieves a safe working load of roughly 377 N (about 60% capacity) and can vertically lift approximately 32 kg with a 2:1 safety factor. If your sequence requires the load to remain stationary upon air loss or valve centering, be aware the piston will drift; the fixed bumper only decelerates the stroke end and acts neither as a lock nor a brake. You must integrate an external rod lock or pilot-operated check valve for position holding.
To finalize your order, confirm these essentials: 40 mm bore, 30 mm stroke, PT1/8 air port, male M14x1.5 rod thread, and no sensor 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 SDA40X30-B FAQ
This double-acting cylinder generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. At 0.7 MPa, the push increases to 879.6 N. The theoretical maximum push is 128 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, handles temperatures from -20 to +70 C, and runs at speeds of 30-500 mm/s.
No. It relies on fixed NBR bumpers at each end to decelerate the stroke, which cannot be field-adjusted; for high-energy cycles, slow the approach or add an external shock absorber. Additionally, this SKU lacks the -S magnet, meaning it cannot support reed or electronic switches without changing to the -S variant.
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