Airtac SDA Ultra Thin Cylinder SDA40X30-S-B
The AirTAC SDA Ultra Thin Cylinder SDA40X30-S-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)
- 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 SDA40X30-S-B
The AirTAC SDA40X30-S-B is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, and piston into an ultra-short unit, drastically reducing axial footprint compared to conventional round-body designs. This specific configuration includes a built-in piston magnet and a male M14x1.5 threaded rod end.
The 40 mm bore features a hard-anodized inner wall and a two-way seal, operating at speeds from 30-500 mm/s. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or add external shock absorbers for high-energy loads. The integrated magnet enables position sensing using an AirTAC reed or electronic switch mounted in the body grooves.
Airtac SDA Ultra Thin Cylinder SDA40X30-S-B Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X30-S-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-S-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-S-B Is Used
CNC Fixture Clamping
Secures aluminum housings onto a CNC machining center table, utilizing the 628.3 N extend force to hold parts firmly against cutting forces.
Carton Flap Folding
Deploys the 30 mm stroke to rapidly fold corrugated cardboard flaps on a continuous packaging line prior to tape sealing.
Sorter Diverter Arm
Actuates a routing gate on a parcel handling conveyor, pushing packages to adjacent lanes without extending into the main belt path.
Is the Airtac SDA Ultra Thin Cylinder SDA40X30-S-B the Right Cylinder?
When sizing this 40 mm bore, 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. To finalize your order, confirm the 40 mm bore, 30 mm stroke, PT1/8 port, male M14x1.5 rod thread, and the required magnetic switch. Note that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not act as a lock, so utilize an external rod lock or pilot-operated check valve if the application requires strict load holding.
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-S-B FAQ
This 40 mm bore double-acting cylinder generates a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. At 0.7 MPa, push increases to 879.6 N. The theoretical maximum push is 128 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and a speed range of 30-500 mm/s.
The -B option provides a male M14x1.5 threaded piston rod for direct load coupling. Stopping is managed by a fixed NBR bumper at each end, which decelerates the piston but is not an adjustable air cushion. For high-speed applications, you should add external shock absorbers to prevent impact damage.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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