The AirTAC AirTAC SDA40X120SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 120mm 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 SDA40X120SB is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and a 120 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa, making it well-suited for medium-duty automation tasks. The riveted unibody design significantly reduces axial mounting depth compared to conventional round-body units, saving valuable machine footprint.
This specific configuration includes a built-in piston magnet (-S) for position sensing via AirTAC reed or electronic switches fitted into the body grooves. It also features a male M14x1.5 piston rod thread (-B) instead of the standard female M8x1.25, providing a robust mechanical coupling for your end tooling. End-stopping is handled by a fixed NBR bumper, which decelerates the piston near stroke completion rather than acting as a lock.
| Model | AirTAC SDA40X120SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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. |
| ×120 | 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 routing gates on packaging lines to sort medium-weight cartons, utilizing the 628.3 N extend force to push loads firmly onto adjacent belts.
Raises empty pallets in compact assembly cells where axial space is restricted, safely lifting up to 32 kg vertically with a 2:1 safety margin.
Drives a 120 mm stroke to insert raw blanks into machining centers, using the male M14x1.5 rod end to securely mount custom gripper fingers.
When sizing this actuator, stepping down to the SDA32 yields 402.1 N of push force at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N at the same pressure. Based on the 628.3 N output at 0.5 MPa, a safe working load is approximately 377 N (60% capacity), translating to a vertical lift capability of around 32 kg with a 2:1 safety margin. To finalize your order, confirm the 40 mm bore, 120 mm stroke, PT1/8 port, S magnet option, and B male-thread rod end. Keep in mind that a standard SDA cylinder will drift and lose its position if air pressure drops or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a brake. If your application requires strict load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, and 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 on filtered air between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and supports piston speeds of 30-500 mm/s.
No, it relies on a fixed NBR bumper at each end to decelerate the stroke, which is not a field-adjustable air cushion; for high-energy cycles you should add an external shock absorber. Additionally, the -B option means it has a male M14x1.5 piston rod thread, replacing the default female M8x1.25, and the -S indicates a built-in magnet for AirTAC reed or electronic switches.
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