The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X80-10 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, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X80-10 is a double-acting, single-rod pneumatic cylinder that puts a 10 mm field-adjustable stroke end right at the rear cap. With a 40 mm bore delivering 628 N of push force at 0.5 MPa, it handles moderate clamping, pressing, and positioning tasks where a fixed stroke would force mechanical rework during commissioning. The 16 mm diameter piston rod and PT1/4 ports keep it compatible with common AirTAC SC-series mounting and flow controls.
Because the adjusting screw only shortens the stroke end, the nominal 80 mm stroke remains the maximum travel, and the cylinder can be dialed down to 70 mm as the process demands. The tie-rod body uses a 21 mm air cushion to decelerate the piston quietly, and the standard TPU seals cover a -20 to +70 °C operating window. This is genuine AirTAC product, backed by full traceability and factory testing.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X80-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 80 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. |
| ×80 | 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 retract end position during machine bring-up without cutting brackets or adding external hard stops, speeding up factory acceptance tests.
Compensate for pad or gripper wear over time by adjusting the screw to restore the original contact point, extending service intervals on assembly fixtures.
Quickly adapt a stop gate or diverter to a new product size by adjusting the stroke end, reducing changeover downtime on packaging lines.
Choose the SCJ40X80-10 when you need to dial in a precise end stop during setup or after tooling wear. If 628 N push at 0.5 MPa is marginal, stepping up to a 50 mm bore (SCJ50) raises push force to 982 N at the same pressure. For applications that do not require stroke adjustability, the fixed-stroke SC40 series is a simpler, slightly shorter alternative. When replacing an existing unit, match the 40 mm bore, 80 mm nominal stroke, 10 mm adjust range, PT port thread, and basic mounting style; if the original carried a magnet, order the -S suffix.
Adjustable-stroke checklist
A rear-cap screw lets you shorten the stroke end by up to 10 mm. The 80 mm stroke is the nominal maximum; turning the screw reduces the effective stroke down to 70 mm. It does not change the cylinder's force rating or extend the stroke beyond 80 mm.
At 0.5 MPa the push force is 628 N and the pull force is 528 N (due to the 16 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. Always design for the lower pull force if the cylinder works in both directions.
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