The AirTAC AirTAC SDA25X85SB Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 85mm 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 SDA25X85SB is a double-acting, single-rod compact cylinder engineered to deliver a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. Driven by an 85 mm stroke, it features a hard-anodized bore and a two-way piston seal for reliable pneumatic actuation. This specific configuration includes a built-in piston magnet (-S) for position sensing and a male-thread piston rod (-B) measuring M8x1.25 for secure mechanical load coupling.
Its riveted body design significantly reduces axial mounting depth, making it highly effective for machinery where space is strictly limited. Instead of an adjustable air cushion, the unit relies on a fixed NBR bumper at each end to decelerate the piston near the stroke limits. The integrated magnet allows you to mount AirTAC reed or electronic switches directly into the body grooves for precise end-of-stroke detection.
| Model | AirTAC SDA25X85SB Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 85 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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. |
|---|---|
| 25 | Bore size in mm. |
| ×85 | 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 a routing flap on a logistics sorting line, utilizing the 85 mm stroke and 245.4 N push force to redirect parcels weighing up to 12 kg at operating speeds.
Deploys the male M8x1.25 rod end to drive a mechanical folder arm on a packaging machine, tucking box flaps prior to tape application within a tight mounting envelope.
Pushes prepared test tubes or vials out of a centrifuge carousel, relying on the fixed NBR bumper to soften the end stop without requiring external cushioning.
When sizing this actuator, evaluate your force requirements carefully. Stepping down to an SDA20 bore reduces the 0.5 MPa push force to 157.1 N, while stepping up to an SDA32 bore increases it to 402.1 N. For the 245.4 N output of this 25 mm bore, a safe working load is approximately 147 N (about 60 percent of the 0.5 MPa figure), which translates to a vertical lift capacity of roughly 12.5 kg when applying a 2:1 safety margin. If your application must hold a load vertically without live air pressure, note that a standard cylinder will drift; you must integrate an external rod lock or a pilot-operated check valve. To order, confirm the 25 mm bore, 85 mm stroke, M5x0.8 port, built-in magnet, and male M8x1.25 rod thread.
Quick checklist
This double-acting cylinder provides a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. At 0.7 MPa, the push force is 343.6 N and the pull is 288.6 N. The theoretical maximum push force is 50 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa and a speed range of 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion or a locking brake. For high-energy cycles, you should slow the approach speed or add an external shock absorber. The -S option provides a built-in magnet for use with AirTAC reed or electronic switches in the body grooves.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.