The AirTAC AirTAC SDA63X20SB Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 20mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA63X20SB is a double-acting, single-rod compact cylinder engineered to deliver a robust 1558.6 N push force at 0.5 MPa. Its riveted assembly integrates the barrel, rear cover, and piston into a highly space-efficient package, drastically reducing axial mounting depth compared to conventional round-body units. This specific configuration includes a built-in piston magnet (-S) for position sensing and a male-threaded piston rod (-B) measuring M18x1.5.
Designed for a 20 mm stroke, this unit relies on a fixed NBR bumper at each end to decelerate the piston near stroke limits rather than an adjustable air cushion. The hard-anodized 63 mm bore operates at speeds between 30 and 500 mm/s. For high-energy cycles, operators should add external shock absorbers or slow the approach, as the standard bumper is not a locking mechanism.
| Model | AirTAC SDA63X20SB Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 alignment pins into sheet metal enclosures on an appliance assembly line, utilizing the 1558.6 N extend force to seat parts securely without requiring a full-scale hydraulic press.
Actuates a heavy routing gate on a packaging conveyor, where the short 20 mm stroke and space-saving riveted body fit neatly within the tight transfer zone framework.
Raises a 75 kg workpiece cradle between machining centers; the male M18x1.5 rod threads directly into the tooling bracket, though an external check valve is added to prevent drift on air loss.
When sizing this 63 mm bore actuator, consider stepping down to the SDA50, which provides 981.7 N of push force at 0.5 MPa, or moving up to the SDA80 for 2513.3 N at the same pressure. Based on the 1558.6 N output, the computed safe working load is approximately 935 N (60% capacity), translating to a vertical lift capability of roughly 79.4 kg with a 2:1 safety margin. Keep in mind that a standard SDA cylinder will drift and cannot hold a load if air pressure drops or the valve is centered; maintaining vertical loads requires an external rod lock or a pilot-operated check valve. To order, confirm the 63 mm bore, 20 mm stroke, PT1/4 port, male M18x1.5 rod thread, and the required magnetic sensor.
Quick checklist
At 0.5 MPa, the push force is 1558.6 N and the pull force is 1401.5 N. At 0.7 MPa, the push force is 2182.1 N. The theoretical maximum push force is 318 kgf at the 1.0 MPa pressure limit.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion; high-speed applications may need external shock absorbers. The built-in magnet (-S) works with AirTAC reed or electronic switches mounted in the body grooves for position detection.
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