The AirTAC AirTAC SDA25X85S 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 SDA25X85S is a double-acting, single-rod compact cylinder engineered to deliver 245.4 N of push force at 0.5 MPa. Its riveted assembly securely joins the barrel, rear cover, piston, and rod, drastically reducing axial mounting depth compared to conventional round-body units. This space-saving footprint is ideal for machinery where overall length is restricted.
This specific model includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be specified for high-energy cycles. Operating speed spans 30-500 mm/s.
| Model | AirTAC SDA25X85S 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 the cutting head assembly on an electronic board depaneling machine, utilizing the 85 mm stroke to separate individual circuit panels cleanly.
Folds the minor flaps on small product cartons in a continuous packaging line, where the short riveted body minimizes interference with adjacent conveyor guides.
Pushes lightweight parcels onto a secondary routing belt, relying on the built-in magnet to confirm divert position via a solid-state sensor.
When sizing this unit, consider stepping down to the SDA20, which yields 157.1 N of push at 0.5 MPa, or moving up to the SDA32, which provides 402.1 N at the same pressure. Based on the 245.4 N output, the safe working load is roughly 147 N (about 60% capacity), translating to a vertical lift capability of approximately 12.5 kg with a 2:1 safety margin. Keep in mind that a standard SDA body does not hold position upon air loss; the piston will drift, so an external rod lock or pilot-operated check valve is necessary for suspended loads. To order, confirm the 25 mm bore, 85 mm stroke, M5x0.8 port, female rod thread, and the required magnetic switch option.
Quick checklist
This 25 mm bore cylinder provides 245.4 N push and 206.2 N pull at 0.5 MPa, increasing to 343.6 N push and 288.6 N pull at 0.7 MPa. 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 temperature range of -20 to +70 C.
No, the SDA25X85S uses a fixed NBR bumper at each end to decelerate the piston, rather than a field-adjustable air cushion. For high-speed or high-energy applications, you should add an external shock absorber or slow down the approach speed to prevent damage.
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.