The AirTAC AirTAC SDA40X5B Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 5mm 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.
The AirTAC SDA40X5B is a double-acting single-rod compact cylinder engineered for minimal axial footprint. A riveted assembly joins the barrel, rear cover, piston, and rod, yielding a very short body that fits where round-body units cannot. Delivering 628.3 N of push force at 0.5 MPa, it features a hard-anodized bore and a two-way piston seal for reliable performance.
This specific SKU includes a male M14x1.5 piston rod thread (denoted by the B option) for secure mechanical coupling to your load. It uses a fixed NBR bumper at each end to decelerate the stroke, rather than an adjustable air cushion. Note that this configuration lacks a piston magnet, so it cannot support position sensing without upgrading to the -S variant.
| Model | AirTAC SDA40X5B Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 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).
| 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.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×5 | 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).
Ideal for driving a small stamping die in a tight electronics fabrication press, utilizing the 5mm stroke and 628.3 N force to form thin metal contacts rapidly.
Provides a quick, short push to fold corrugated cardboard flaps on a high-speed packaging line, where the male M14x1.5 rod threads directly into a custom folding bracket.
Ejects molded plastic parts from a tight fixture space, taking advantage of the compact riveted body to fit within the constrained mold base.
When sizing this actuator, consider stepping down to the SDA32 bore, which provides 402.1 N of push at 0.5 MPa, or moving up to the SDA50, which yields 981.7 N at the same pressure. For the SDA40X5B specifically, the safe working load is approximately 377 N (about 60% of the 628.3 N figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Be aware that a standard cylinder drifts when air is lost or a valve is centered; the fixed bumper only decelerates near the stroke end and acts as neither a lock nor a brake. To hold a load securely without live pressure, integrate an external rod lock or a pilot-operated check valve. To order, confirm the 40mm bore, 5mm stroke, PT1/8 port, male M14x1.5 rod thread, and no magnet.
Quick checklist
The SDA40X5B generates a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. At 0.7 MPa, the push force is 879.6 N. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates at speeds between 30-500 mm/s and uses a PT1/8 port.
No, this model uses a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion. Additionally, this specific SKU lacks a piston magnet, so it cannot accept reed or electronic switches; you would need the -S variant for position sensing.
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