The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X160-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø63mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X160-50S is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly on the machine. Its rear-cap adjusting screw provides a 50 mm adjustment range, letting you dial in the exact stop position for a 160 mm nominal stroke without swapping the cylinder or adding external hard stops.
At 0.5 MPa, this 63 mm bore unit delivers 1559 N of push force and 1402 N on the pull stroke, making it a solid mid-range actuator for positioning and clamping tasks. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback. It uses a 20 mm piston rod, PT1/4 ports, and a 28 mm air cushion for smooth deceleration.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X160-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -50 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Field technicians use the 50 mm adjustment screw to fine-tune the end-of-stroke position during initial machine setup, eliminating the need to shim or reposition the cylinder mounting brackets.
In pressing or clamping fixtures, the adjustable stroke takes up pad wear over time. Operators simply turn the rear screw to restore the original clamp position without disassembling the tooling.
On packaging or sorting lines, the stroke is quickly adjusted to match a new box size or product width. The built-in magnet provides sensor confirmation of the new stroke end for the control system.
Choose the SCJ63 bore when your application needs roughly 1560 N of push force at standard plant air. If you can step down to a 50 mm bore, the SCJ50 provides 982 N push at 0.5 MPa in a lighter, more compact package. For higher force demands, the SCJ80 bore jumps to 2513 N push. This adjustable-stroke model is ideal where the exact stop position must be tuned during commissioning or changed for different product runs; if your stroke is fixed and never changes, a standard SC63 fixed-stroke cylinder is a simpler, lower-cost alternative. For a drop-in replacement, match the 63 mm bore, 160 mm nominal stroke, 50 mm adjustment range, PT port thread, and the integrated magnet. At this 160 mm stroke, rod deflection is minimal under axial loads, but if you are pushing an offset or unguided mass, consider an external guide rail or a guided cylinder to protect the rod and bearing from side-load wear.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 1559 N pushing and 1402 N pulling. The maximum operating force at 0.9 MPa is 2805 N push. The theoretical force at 1.0 MPa is 318 kgf. The push force is higher than the pull force because the single rod reduces the piston area on the return side.
Yes, if you need field-adjustable stroke. The SCJ63X160-50S matches the SC63 bore, port size (PT1/4), and rod diameter (20 mm). The body length is slightly longer to house the adjusting screw. Ensure your mounting can accommodate the extra rear-cap length and that you order the -S magnet option if your existing setup uses barrel-mounted sensors.
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