The AirTAC AirTAC SDA63X85SB Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 85mm 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 SDA63X85SB is a double-acting, single-rod compact cylinder engineered to deliver 1558.6 N of push force and 1401.5 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, and piston into a highly abbreviated unit, drastically reducing axial mounting depth compared to conventional round-body designs. This space efficiency makes it ideal for tight machine footprints requiring substantial actuation power.
This specific configuration includes an integrated piston magnet (S) for position sensing via AirTAC reed or electronic switches fitted into the body grooves. It is also equipped with a male-thread piston rod end (B), featuring an M18x1.5 thread on a 20 mm rod for robust load coupling. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy cycles.
| Model | AirTAC SDA63X85SB Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 85 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. |
| ×85 | 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 stripper plates out of large plastic molding machines, utilizing the 1558.6 N extend force to reliably free cooled parts from deep cavities.
Pushes heavy timber or steel pallets sideways onto secondary processing lines, where the 85 mm stroke and 79.4 kg vertical lift margin ensure positive transfer.
Actuates major flap folders on high-speed corrugated box erectors, relying on the short riveted body to fit within narrow side frames without clashing.
When sizing this actuator, evaluate your force margins carefully. Stepping down, the SDA50 provides 981.7 N of push at 0.5 MPa, while stepping up to the SDA80 yields 2513.3 N at the same pressure. For the SDA63X85SB, the safe working load is approximately 935 N (about 60% of the 1558.6 N figure at 0.5 MPa), translating to a vertical lift capacity of roughly 79.4 kg with a 2:1 safety margin. Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end rather than locking the load; utilize an external rod lock or pilot-operated check valve if position holding is mandatory. To order, confirm the 63 mm bore, 85 mm stroke, PT1/4 port, built-in magnet (S), and male M18x1.5 rod thread (B).
Quick checklist
At 0.5 MPa, this 63 mm bore cylinder provides 1558.6 N of push force and 1401.5 N of pull force. At 0.7 MPa, push increases to 2182.1 N and pull to 1962.2 N. The theoretical maximum push is 318 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the operating speed spans 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits, which is not an adjustable air cushion. For high-speed or high-energy cycles, adding an external shock absorber is recommended. Additionally, the bumper is not a locking device; the piston will drift if air is lost or the valve is centered, so an external rod lock is required for strict load holding.
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