The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X500-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø40mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X500-100S is a 40mm bore double-acting single-rod cylinder with a rear-cap adjusting screw, giving you up to 100mm of field-adjustable stroke-end reduction without swapping the cylinder. At 0.5 MPa it delivers 628 N of push force and 528 N on the pull stroke, making it a practical mid-range actuator for tasks that need fine-tuned end positioning.
This model is factory-equipped with a built-in magnet (-S suffix), so you can clamp CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for non-contact position sensing. The 16mm diameter piston rod, PT1/4 port, and 21mm air cushion help manage deceleration, while the 185mm body length A(SCJ) keeps the package compact for a 500mm stroke unit.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X500-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 100 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. |
| -100 | 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 commissioning, the 100mm adjustment screw lets technicians dial in the exact stroke end position for a new tool or fixture without needing to re-plumb or swap the cylinder.
Quickly adapt the push stroke for different box sizes or product formats on a packaging line. The adjustable stroke end reduces mechanical setup time between production runs.
In clamping or pressing operations, the stroke can be incrementally extended over time to compensate for pad or tooling wear, maintaining consistent clamp force without replacing the actuator.
Choose the SCJ40X500-100S when you need a 500mm nominal stroke that can be shortened by up to 100mm during commissioning or changeover. If you require more force, stepping up to the 50mm bore gives 982 N of push at the same 0.5 MPa. For applications that don't need stroke adjustability, the fixed-stroke SC40X500 is a simpler alternative. A direct replacement must match the 40mm bore, 500mm stroke, 100mm adjust range, PT port thread, and the built-in magnet. At this 500mm stroke length, be mindful of side-loading on the 16mm rod; if the load is not guided externally, consider adding a guide or switching to a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, the cylinder produces 628 N of push force and 528 N of pull force. The maximum push force at 0.9 MPa is 1130 N. The adjustable stroke screw changes the end position, not the output force.
Yes, this is a direct dimensional and functional replacement for any AirTAC SCJ40X500-100S. It matches the 40mm bore, 500mm nominal stroke, 100mm adjust range, PT port thread, and has the built-in magnet for sensor compatibility. Verify your mounting style matches the basic configuration.
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