The AirTAC AirTAC SDA20X65SB Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 65mm 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 SDA20X65SB is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Its riveted body design drastically reduces axial mounting depth compared to round-body alternatives, making it highly effective for machinery where space savings are critical. The unit includes a built-in piston magnet (-S) for position detection and a male M6x1.0 threaded rod end (-B) for secure load coupling.
The bore features a hard-anodized inner wall paired with a two-way piston seal, operating at speeds from 30 to 500 mm/s. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. This bumper slows the piston near the end limits but does not function as a locking brake; for high kinetic energy applications, an external shock absorber is advised.
| Model | AirTAC SDA20X65SB Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 65 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. |
| ×65 | 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).
Provides the precise 157.1 N push required to eject populated printed circuit boards from test fixtures without damaging delicate solder joints.
Utilizes the 65 mm stroke to tuck minor flaps on small packaging lines, fitting neatly within the narrow axial footprint of folding mechanisms.
Drives fluid dispenser nozzles over multi-well plates, using the male M6 rod end to securely attach custom pipette heads.
When sizing this 20 mm bore actuator, evaluate your force margins carefully. Stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. For the SDA20X65SB, a safe working load is approximately 94 N (about 60% of the 157.1 N capacity), translating to a vertical lift capability of roughly 8 kg with a 2:1 safety margin. Remember that a standard compact cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered; maintaining vertical loads requires an external rod lock or a pilot-operated check valve. To order, confirm the 20 mm bore, 65 mm stroke, M5x0.8 port, built-in magnet, and male M6x1.0 rod thread.
Quick checklist
This double-acting cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, and 219.9 N push at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports speeds of 30-500 mm/s.
Yes, the -S suffix indicates a built-in piston magnet compatible with AirTAC reed or electronic switches mounted in the body grooves. Regarding end-of-stroke damping, it uses a fixed NBR bumper to decelerate the piston; it is not an adjustable air cushion, so external shock absorbers are recommended for high-speed loads.
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