Airtac SDA Ultra Thin Cylinder SDA100X40
The AirTAC Airtac SDA Ultra Thin Cylinder SDA100X40 is a genuine double-acting COMPACT (thin) air cylinder with a Ø100mm bore and 40mm stroke, PT3/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
- BoreØ100 mm
- Stroke40 mm
- Port sizePT3/8
- Acting typeDouble acting
- Rod threadM18×1.5 (F) / M26×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDA Ultra Thin Cylinder SDA100X40
The AirTAC SDA100X40 is a double-acting, single-rod compact cylinder engineered for heavy-duty pneumatic actuation within a minimal axial footprint. It delivers a substantial 3927 N push and 3524.9 N pull at 0.5 MPa, achieving a theoretical maximum push force of 801 kgf at 1.0 MPa. The hard-anodized 100 mm bore operates at speeds between 30-500 mm/s, fed by PT3/8 ports.
Unlike standard round-body or tie-rod actuators, this unit utilizes a short riveted body assembly to drastically reduce mounting depth in space-constrained machinery. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require external shock absorbers. This specific SKU lacks a piston magnet, so it cannot support magnetic position sensing without upgrading to the -S option.
Airtac SDA Ultra Thin Cylinder SDA100X40 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA100X40 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø100 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod end thread | M18×1.5 female / M26×1.5 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3525 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SDA100X40
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SDA100X40 Is Used
Injection Mold Ejection
Provides the heavy 3927 N push force required to eject dense plastic parts from large injection molding machines, utilizing the 32 mm rod to withstand high stripping resistance.
Stamping Press Feed
Indexes thick metal sheet stock into a mechanical stamping press, where the compact riveted body minimizes axial intrusion into tight feed lines.
Heavy Pallet Lifting
Raises loaded pallets weighing up to 200.2 kg in vertical lift stations, relying on the 100 mm bore for robust upward thrust at 0.5 MPa.
Is the Airtac SDA Ultra Thin Cylinder SDA100X40 the Right Cylinder?
When sizing this actuator, compare its 3927 N push at 0.5 MPa against the next size down: the SDA80 offers 2513.3 N, which may suffice for lighter loads. Stepping up is not possible as 100 mm is the largest bore in the SDA series. A safe working load is approximately 2356 N (about 60% of the 0.5 MPa figure), allowing a vertical lift of roughly 200.2 kg with a 2:1 safety margin. Remember that a plain double-acting cylinder drifts when air pressure is lost or the valve is centered; the fixed NBR bumper only decelerates the stroke end and does not function as a locking brake. To hold a load securely, integrate an external rod lock or pilot-operated check valve. Confirm your ordering essentials: 100 mm bore, 40 mm stroke, PT3/8 port, female M18x1.5 rod thread, and no 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 SDA100X40 FAQ
The SDA100X40 generates a push force of 3927 N and a pull force of 3524.9 N at 0.5 MPa. At 0.7 MPa, push increases to 5497.8 N. The theoretical maximum push is 801 kgf at 1.0 MPa. It features a 32 mm piston rod, a female M18x1.5 rod-end thread, and PT3/8 air ports.
No, this model uses a fixed NBR bumper at each end to decelerate the stroke, not an adjustable air cushion. Additionally, this specific SKU lacks a piston magnet, so it cannot support reed or electronic switches; you must select the -S variant to enable position sensing.
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