The AirTAC AirTAC SDA40X65SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 65mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X65SB is a double-acting single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod to drastically reduce axial mounting depth, making it ideal for machinery where a standard round-body unit would protrude too far. The 16 mm piston rod features a male M14x1.5 thread for robust load coupling, while the hard-anodized bore ensures long service life.
This specific configuration includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves, enabling precise end-of-stroke detection. Instead of an adjustable air cushion, the cylinder relies on a fixed NBR bumper at each end to decelerate the piston near the stroke limits. Operating at speeds between 30 and 500 mm/s, it utilizes a PT1/8 port and handles a maximum standard stroke length of 130 mm.
| Model | AirTAC SDA40X65SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | 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).
Actuates a routing flap on a logistics conveyor to redirect parcels, utilizing the 628.3 N push force to positively shift heavy cartons without excessive axial footprint.
Drives a secondary ejector pin plate on a plastics molding press, where the male M14x1.5 rod end securely threads into the tooling and the compact body fits within tight mold halves.
Folds the minor flaps of corrugated shipping boxes on a continuous packaging line, relying on the built-in magnet and electronic switches to confirm fold completion at 500 mm/s.
When sizing this unit, evaluate your force requirements carefully. Stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, whereas stepping up to the SDA50 provides 981.7 N. The SDA40X65SB offers a safe working load of roughly 377 N (about 60% of its 628.3 N capacity) and can vertically lift approximately 32 kg with a 2:1 safety margin. Keep in mind that a standard compact cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered; the fixed NBR bumper only decelerates the stroke end rather than locking it. For suspended loads, integrate an external rod lock or a pilot-operated check valve. To order, confirm the 40 mm bore, 65 mm stroke, PT1/8 port, built-in magnet (S), and male-thread (B) rod end.
Quick checklist
This double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and functions safely in temperatures from -20 to +70 C.
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 high-speed applications may require an external shock absorber. Additionally, the bumper is not a brake, meaning the piston will drift if air pressure is lost or the valve is centered. An external rod lock or pilot-operated check valve is required to hold a suspended load.
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