The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X160-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X160-75 is a double-acting, single-rod pneumatic cylinder engineered for applications requiring precise, on-machine stroke tuning. Its rear-cap adjusting screw provides a 75 mm adjustment range, allowing you to dial in the exact stroke end position from 85 mm to the nominal 160 mm without removing the cylinder or adding external hard stops. This model delivers 982 N of push force at 0.5 MPa and features a 20 mm diameter piston rod with an M16x1.5 male thread.
Built on a durable tie-rod construction, this cylinder includes a 21 mm adjustable air cushion to decelerate the piston smoothly at both ends of its travel. The PT1/4 port ensures straightforward pneumatic connections, while the TPU seal material provides reliable operation within a standard temperature range of -20 to +70 °C. The body length for this SCJ50 configuration is 194 mm, offering a compact yet powerful solution for dynamic stroke adjustment.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X160-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 75 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -75 | 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.
Ideal for machine builders who need to fine-tune the end-of-arm tooling position during initial system setup. The 75 mm adjustment range allows engineers to quickly optimize the stroke without swapping cylinders, significantly reducing commissioning time.
Perfect for conveyor diverters or sorting gates that must adapt to different package sizes. Operators can easily adjust the cylinder's stroke end to accommodate a new product format on the line, enabling a rapid and tool-less changeover process.
In clamping or pressing operations, the adjustable stroke can compensate for mechanical wear on tooling or contact surfaces over time. The 75 mm adjustment allows maintenance teams to restore the precise clamping position without replacing any components.
Select the SCJ50X160-75 when your application benefits from a 75 mm field-adjustable stroke range to fine-tune end positions during commissioning or format changes. If the 982 N push force at 0.5 MPa is insufficient, stepping up to the SCJ63 bore provides 1559 N of push force. For applications that do not require stroke adjustability, the fixed-stroke SC50 series offers a simpler, more cost-effective alternative. A direct replacement must match the 50 mm bore, 160 mm nominal stroke, 75 mm adjustment range, PT port thread, and basic mounting configuration.
For this 160 mm stroke length, ensure the load is guided to prevent excessive side-loading on the piston rod. If external guidance is not feasible, consider a guided cylinder solution to protect the rod bearing and seal from premature wear.
Adjustable-stroke checklist
The push force is 982 N at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa. The pull force is lower due to the single-rod design, providing 825 N at 0.5 MPa. These values are identical to the fixed-stroke SC50 series of the same bore.
A mechanical screw in the rear end cap acts as an internal, adjustable stop for the piston. Turning the screw changes the retracted stroke end position, effectively shortening the stroke by up to 75 mm from the nominal 160 mm. It adjusts only the stroke end point, not the cylinder's speed or force.
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