The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X160-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø50mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X160-50 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the piston stop position by up to 50 mm without changing the cylinder. Its 20 mm diameter rod and M16x1.5 male knuckle thread provide solid mechanical connection, while the PT1/4 ports and 21 mm air cushion ensure smooth, controlled deceleration.
At 0.5 MPa, this 50 mm bore unit delivers 982 N of push force and 825 N on the pull stroke, suiting it to medium-duty clamping, pressing, and positioning tasks. The tie-rod construction with a 194 mm body length (A dimension) makes it a direct, adjustable replacement for fixed-stroke SC cylinders in the same bore class.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X160-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 50 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. |
| -50 | 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 end stop by up to 50 mm when a packaging line switches between box sizes, eliminating manual stop repositioning and reducing changeover time.
Dial in the exact clamping depth on a woodworking or assembly jig to compensate for varying workpiece thickness without swapping the cylinder.
Take up mechanical play in a pressing or riveting station over time by advancing the rear screw, maintaining consistent end-of-stroke force application.
Choose the SCJ50X160-50 when your application needs on-machine stroke trimming—commissioning a new fixture, accommodating part tolerance stack-up, or changing between product formats. If you need higher force, stepping up to the 63 mm bore provides 1559 N push at 0.5 MPa; for a lower force, the 40 mm bore delivers 628 N. The 160 mm nominal stroke is well within the 1200 mm maximum for this bore, so standard lead times apply.
For a drop-in replacement, match the 50 mm bore, 160 mm nominal stroke, 50 mm adjust range, PT1/4 ports, and basic mounting. If your load creates significant side forces at this stroke length, consider adding an external guide rail or switching to a guided cylinder to protect the rod bearing.
Adjustable-stroke checklist
At 0.5 MPa, push force is 982 N and pull force is 825 N. At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 1964 N. The pull force is lower due to the 20 mm single rod reducing the piston area on the return stroke.
The SCJ has a rear-cap adjusting screw that lets you shorten the stroke end by up to 50 mm in the field. A fixed-stroke SC cylinder requires you to physically change the cylinder or add external hard stops to alter the stroke length. The SCJ is ideal for applications where the exact end position needs fine-tuning during setup or production.
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