The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X500-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø40mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X500-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the 500mm nominal stroke by up to 10mm without removing the cylinder. Its 16mm diameter piston rod and PT1/4 ports deliver 628N of push force at 0.5MPa, making it a practical mid-range actuator for tasks that need a precise end position.
The built-in magnet allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. With a 21mm air cushion and a body length of 185mm plus stroke, this cylinder handles speeds of 30-800mm/s and operates on standard filtered air at up to 1.0MPa.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X500-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
During machine setup, the 10mm adjustment screw lets technicians dial in the exact stroke end for a pick-and-place mechanism without swapping out the cylinder or machining custom stops.
On a packaging line, the adjustable stroke compensates for gradual wear on a pusher pad, maintaining consistent product positioning over thousands of cycles.
For a light assembly fixture handling two product sizes, the screw adjusts the stroke end in seconds to accommodate a different box depth, reducing downtime between batches.
For a step up in force, the 50mm bore SCJ provides 982N of push at 0.5MPa, while a step down to the 32mm bore yields 402N. If your application does not require stroke-end adjustment, the fixed-stroke SC40X500 offers the same force and mounting pattern without the rear adjusting screw. When replacing this unit, match the 40mm bore, 500mm nominal stroke, 10mm adjust range, PT port thread, and the built-in magnet. For a 500mm stroke, ensure the rod is guided externally or consider a guided cylinder if the load applies significant side force, as long unsupported strokes can cause rod buckling.
Adjustable-stroke checklist
At 0.5MPa, the push force is 628N and the pull force is 528N. The push force is higher because the single rod reduces the piston area on the return side. The maximum push force at 0.9MPa is 1130N.
A rear-cap screw sets the stroke end position within a 10mm range; it does not adjust force or speed. The cylinder does not hold its position if air pressure is lost—an external rod lock or pilot-operated check valve is required for load holding.
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