The AirTAC AirTAC SDA25X70SBH Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 70mm 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 SDA25X70SBH is a double-acting, single-rod compact cylinder engineered with a 25 mm bore and 70 mm stroke. It provides a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. This specific configuration includes a built-in piston magnet (-S) for position sensing, a male M8x1.25 piston rod thread (-B), and fluororubber (-H) seals for enhanced thermal and oil resistance. The hard-anodized bore and two-way piston seal ensure durable performance across a 30-500 mm/s speed range.
Its riveted body design significantly reduces axial mounting depth compared to traditional round-body cylinders, making it ideal for space-constrained machinery. Instead of an adjustable air cushion, the unit relies on a fixed NBR bumper at each end to decelerate the stroke. The integrated magnetic band is fully compatible with AirTAC reed or electronic switches, giving you flexible feedback options for your control system.
| Model | AirTAC SDA25X70SBH Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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. |
| ×70 | 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).
Drives the heated jaw on a vertical form-fill-seal machine, utilizing the 70 mm stroke and FKM seals to withstand ambient heat near the sealing bars.
Actuates a routing flap on a logistics conveyor belt, where the short riveted body saves axial space within the tight transfer frame.
Secures circuit boards during routing operations, using the male M8x1.25 rod end to attach a custom non-marring clamp jaw.
When sizing this 25 mm bore actuator, consider stepping down to the SDA20, which yields 157.1 N of push force at 0.5 MPa, or moving up to the SDA32, which provides 402.1 N at the same pressure. For the SDA25X70SBH specifically, the safe working load is approximately 147 N (about 60% of the 245.4 N figure), translating to a vertical lift capacity of roughly 12.5 kg with a 2:1 safety margin. Keep in mind that a standard compact cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift. If your application requires load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve. To order, confirm the 25 mm bore, 70 mm stroke, M5x0.8 port, magnet requirement, male rod thread, and FKM seal option.
Quick checklist
This double-acting cylinder generates 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. The theoretical maximum push force is 50 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 from 30 to 500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; this is not an adjustable air cushion, so external shock absorbers may be needed for high-energy loads. The built-in magnet allows you to mount AirTAC reed or electronic switches directly into the body grooves for precise position detection.
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