The AirTAC AirTAC SDA40X45SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 45mm 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 SDA40X45SB is a double-acting, single-rod compact cylinder engineered to deliver a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. Its riveted body assembly significantly reduces axial mounting depth compared to conventional round-body designs, making it highly effective for machinery where space savings are critical. The 16 mm piston rod features a male M14x1.5 thread for direct load coupling.
This specific configuration includes a built-in piston magnet (-S) for position detection using an AirTAC reed or electronic switch mounted into the body grooves. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, absorbing impact without adding length. Operating at speeds between 30-500 mm/s, this unit utilizes a PT1/8 port and is built for demanding pneumatic automation.
| Model | AirTAC SDA40X45SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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. |
| ×45 | 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 Z-axis plunge on a printed circuit board depaneling router, utilizing the 45 mm stroke and 628.3 N force to cleanly cut substrates without consuming excessive vertical bay height.
Actuates the side flap folding mechanism on a continuous motion case erector, where the compact riveted body fits within tight conveyor side frames and the male M14x1.5 rod secures the folding arm.
Ejects small stamped metal brackets from a progressive die set, relying on the 527.8 N retract force to extract the part quickly before the press cycles.
When sizing this 40 mm bore, evaluate your force requirements carefully. Stepping down to the SDA32 yields 402.1 N of push force at 0.5 MPa, while moving up to the SDA50 provides 981.7 N. The SDA40X45SB provides 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. To finalize your order, confirm the 40 mm bore, 45 mm stroke, PT1/8 port, the required -S magnet, and the -B male M14x1.5 rod thread. Note that a standard cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a locking brake. If your application must hold a load without live pressure, integrate an external rod lock or a pilot-operated check valve.
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 0.15-1.0 MPa, handles speeds of 30-500 mm/s, and functions in temperatures from -20 to +70 C.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion, so you may need an external shock absorber for high-energy loads. The included -S magnet allows you to mount an AirTAC reed or electronic switch along the body grooves for precise position detection.
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