The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X15-10 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 SCJ40X15-10 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the 15mm nominal stroke by up to 10mm via the rear-cap screw. With a 40mm bore and 16mm rod, it delivers 628 N of push force at 0.5 MPa, making it a compact workhorse for short-throw positioning tasks.
This tie-rod cylinder uses PT1/4 ports and an M12x1.25 rod thread, with a 21mm air cushion at each end for smooth deceleration. The SCJ body length A is 185mm, slightly longer than the fixed-stroke SC due to the adjusting mechanism. It runs on filtered air at 0.15-1.0 MPa and is a genuine AirTAC unit built for repeatable, on-machine stroke tweaking.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X15-10 |
|---|---|
| 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.
Fine-tune the end-of-stroke position during machine build without re-machining brackets. The 10mm screw adjustment lets technicians quickly dial in the exact stop point for grippers, clamps, or ejectors.
In high-cycle dispensing or pressing fixtures, tooling surfaces can wear over time. The rear adjuster takes up the slack, maintaining consistent contact force and part quality without replacing the cylinder.
On small packaging or labelling lines, the SCJ40X15-10 allows operators to adjust a stop or guide position for different product sizes in seconds, reducing changeover downtime.
Choose the SCJ40X15-10 when you need to dial in a precise end position during commissioning or after tooling wear, without swapping the cylinder. If 628 N of push force is marginal, stepping up to a 50mm bore (SCJ50) gives 982 N at the same 0.5 MPa. For a longer fixed stroke with no adjustment, the standard SC series is a simpler, lower-cost alternative.
This cylinder is a direct replacement for another AirTAC SCJ40 with a 15mm nominal stroke and 10mm adjustment range, matching PT ports and basic mounting. If your application involves significant side loads, consider an external guide rail or a guided cylinder, as the SCJ's rod bearing is designed for axial thrust only.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N (the difference is due to the 16mm rod area). At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 1280 N. Always size for your working pressure.
Yes, if you need the adjustable stroke feature. The SCJ40X15-10 shares the same bore, rod, and port dimensions as the SC40, but the body is slightly longer to house the adjusting screw. Ensure you have clearance for the rear adjuster and match the PT thread and mounting style.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.