The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-50S 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, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X60-50S is a 63 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering up to 50 mm of fine-tuning via a rear-cap screw. This model delivers 1559 N of push force at 0.5 MPa, making it a robust mid-range actuator for applications where the final stop position needs to be dialed in during commissioning or changeovers.
A built-in magnet (-S suffix) is integrated into the piston, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable, non-contact end-of-stroke sensing. The cylinder uses a 20 mm diameter rod, PT1/4 ports, and a 28 mm air cushion to decelerate the piston smoothly, with a body length A of 197 mm.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X60-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 60 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. |
| ×60 | 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.
Perfect for assembly fixtures where a pressing or clamping depth must be precisely set and easily adjusted by up to 50 mm without replacing the cylinder or adding external hard stops.
Used on packaging lines to quickly adjust the stroke of a diverter gate or pusher arm when switching between different product sizes, minimizing downtime.
In high-cycle applications, the adjustable screw can be used to take up mechanical wear in tooling or linkages, maintaining consistent positioning over the cylinder's service life.
Choose this 63 mm bore when the 50 mm bore's 982 N push force is marginal for your load at 0.5 MPa; if you need more power, the 80 mm bore provides 2513 N. For applications where the stroke never needs field adjustment, the simpler fixed-stroke SC63 series is a direct alternative. This SCJ model is a drop-in replacement for another AirTAC SCJ63X60-50S with PT ports, basic mounting, and a magnet.
At a 60 mm nominal stroke, rod bending from side loads is not a primary concern, but always align the load with the rod axis. If the application involves a pivoting movement, consider the TC centre trunnion mount instead of the basic configuration.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. The maximum push force at 0.9 MPa is 2805 N. The pull force is lower due to the area of the 20 mm piston rod.
The rear adjusting screw limits the piston's retraction stroke end, allowing you to shorten the effective stroke by up to 50 mm from the nominal 60 mm. It is a mechanical stop for position setting, not a locking device. The piston will drift if air pressure is lost; use an external rod lock or pilot-operated check valve for load holding.
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