The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X15-10S 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, 15mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X15-10S is a 40 mm bore double-acting, single-rod cylinder with a field-adjustable stroke end, giving you up to 10 mm of fine-tuning via the rear-cap screw. Its 16 mm diameter rod and PT1/4 port deliver a push force of 628 N at 0.5 MPa, making it a compact yet powerful actuator for short-throw positioning tasks.
A built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The cylinder body length A is 185 mm, and the adjustable cushion decelerates the piston smoothly at stroke end, protecting the end cap during high-cycle operation.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X15-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 15 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. |
| ×15 | 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.
Adjust the stroke end in 10 mm increments during machine setup to perfectly align a stop gate or diverter without re-machining brackets.
Compensate for pad or gripper wear in pick-and-place units by slightly extending the stroke end, maintaining consistent contact pressure over time.
Quickly adapt the cylinder's end position for different product sizes on a packaging line, reducing changeover time compared to fixed-stroke cylinders.
Choose the SCJ40 when you need to dial in a precise end stop on the machine without swapping cylinders. If the 628 N push force at 0.5 MPa is insufficient, stepping up to the 50 mm bore SCJ50 provides 982 N. For applications that do not require field adjustability, the fixed-stroke SC40 is a simpler, cost-effective alternative. To replace this unit, match the 40 mm bore, 15 mm nominal stroke, 10 mm adjust range, PT port thread, and the built-in magnet (-S).
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The pull force is lower because the 16 mm rod reduces the effective piston area on the return stroke.
A screw in the rear cap limits how far the piston retracts, effectively shortening the stroke end by up to 10 mm. This lets you fine-tune the cylinder's stopping position in the field without affecting the 15 mm nominal stroke rating or the cylinder's force output.
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