The AirTAC AirTAC SDA20X50BH Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 50mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA20X50BH is a double-acting single-rod compact cylinder engineered for tight axial footprints. Its riveted assembly minimizes overall length, yielding a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. This specific SKU includes a male M6x1.0 piston rod end for direct load coupling and utilizes fluororubber (FKM) seals for upgraded thermal and oil resistance.
The 20 mm bore features an M5x0.8 port and a hard-anodized inner wall to reduce friction. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators must slow the approach or utilize external shock absorbers for high-energy cycles. Because this configuration lacks a piston magnet, position sensing is not supported.
| Model | AirTAC SDA20X50BH Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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).
Actuates the cutting tool head on an electronics depaneling machine, utilizing the 50 mm stroke and FKM seals to resist flux contamination.
Drives the heat seal platen in a pharmaceutical blister packaging line where the 157.1 N output securely presses the lidding foil.
Pivots a routing flap on a high-speed logistics conveyor, taking advantage of the short riveted body to fit within the conveyor frame depth.
When sizing this actuator, stepping down to the SDA16 provides 100.5 N of push force at 0.5 MPa, while moving up to the SDA25 increases that output to 245.4 N. For the current 20 mm bore, the safe working load is approximately 94 N (about 60% of the 157.1 N figure), which translates to a vertical lift capacity of roughly 8 kg with a 2:1 safety margin. To finalize your order, confirm the 50 mm stroke, M5x0.8 port, male M6 rod thread, FKM seal option, and the absence of a sensor magnet.
Note that a standard compact cylinder drifts when air pressure is lost or the directional valve is centered. The fixed rubber bumper only decelerates the piston near the stroke limits and does not function as a locking brake. If your application must sustain a load without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 20 mm bore double-acting cylinder generates a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. At 0.7 MPa, the push force is 219.9 N. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a speed range of 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot support AirTAC reed or electronic switches. You would need the SDA20X50SBH variant to utilize the magnetic switch grooves molded around the cylinder body.
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