The AirTAC SDA63X85B 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 SDA63X85B is a double-acting, single-rod compact cylinder engineered to deliver a substantial 1558.6 N of push force at 0.5 MPa. Its riveted body design integrates the barrel, rear cover, piston, and rod into a highly abbreviated assembly, saving valuable axial mounting depth in machinery where a longer round-body unit would simply not fit. The bore is hard-anodized and uses a two-way piston seal for reliable pneumatic operation.
This specific SKU is configured with a male M18x1.5 threaded piston rod end (denoted by the B option) on a 20 mm diameter rod, providing a robust mechanical coupling for your load. It uses PT1/4 ports and operates at speeds between 30 and 500 mm/s. End-of-stroke energy is managed solely by a fixed NBR bumper, which decelerates the piston near the stroke limits rather than acting as a lock or adjustable air cushion.
| Model | AirTAC SDA63X85B 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 ejection pins on a 100-ton injection molding press where the 1558.6 N extend force clears heavy plastic parts, and the short riveted body fits within tight mold platens.
Pushes loaded pallets onto a secondary packaging line, utilizing the 85 mm stroke and male M18x1.5 rod end to securely mount a wear-resistant contact block.
When sizing this model, it helps to step both directions: stepping down to the SDA50 yields 981.7 N of push at 0.5 MPa, while stepping up to the SDA80 provides 2513.3 N at the same pressure. Keep in mind that a plain compact cylinder does not hold its load if air pressure is lost or the valve is centered; the piston will drift, and the fixed bumper only decelerates it near the end of travel. For applications requiring position holding, an external rod lock or pilot-operated check valve is necessary. Confirm your ordering essentials: 63 mm bore, 85 mm stroke, PT1/4 port, male M18x1.5 rod thread, and no sensor magnet.
Quick checklist
This double-acting cylinder generates 1558.6 N of push and 1401.5 N of pull at 0.5 MPa. At 0.7 MPa, the push increases to 2182.1 N. The theoretical maximum push force is 318 kgf at the 1.0 MPa operating pressure limit.
No. This SKU lacks the -S option, so it has no piston magnet and cannot accept reed or electronic switches. Additionally, it relies on a fixed NBR bumper at each end to decelerate the stroke, not an adjustable air cushion. For high-speed operations, you should add an external shock absorber.
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