The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-50TC 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X150-50TC is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, providing up to 50 mm of rear-end stroke reduction for fine-tuning machine end positions. With a 50 mm bore, it delivers 982 N of push force at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa, using a 20 mm diameter piston rod and PT1/4 ports.
This model features a TC centre trunnion mount (supplied with the TCM1 bracket, order code F-SC50TC) for applications requiring the cylinder to pivot during its stroke. The body length A(SCJ) is 194 mm plus the stroke, making it a compact yet powerful solution for commissioning, format changeovers, and wear compensation tasks where a fixed-stroke cylinder would require mechanical stops.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-50TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 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. |
| ×150 | 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.
Engineers can fine-tune the end-of-stroke position during initial machine setup without dismounting the cylinder or fabricating custom hard stops, dramatically reducing commissioning time.
On packaging or sorting lines, the 50 mm adjustment range allows a single pusher or diverter cylinder to be quickly reconfigured for different box sizes or product widths, eliminating mechanical change parts.
In clamping or pressing applications, the adjustable stroke can be periodically advanced to compensate for tooling or pad wear, maintaining consistent clamping force and cycle time without replacing components.
Choose the SCJ50X150-50TC when you need to precisely dial in a stroke end position within a 50 mm window on a pivoting assembly. If your force requirements are lower, stepping down to the 40 mm bore (628 N push at 0.5 MPa) reduces size and air consumption; for higher force, the 63 mm bore provides 1559 N push. For a fixed, non-adjustable stroke, the standard SC series is a simpler, more cost-effective choice. This cylinder is a direct replacement for another AirTAC SCJ50X150-50TC with a centre trunnion mount. At this 150 mm stroke, side-loading is minimal, but for any off-axis loads, ensure the load is externally guided to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 982 N and the pull force is 825 N (the difference is due to the 20 mm single piston rod). At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N.
A rear-cap adjusting screw lets you shorten the stroke end by up to 50 mm from the nominal 150 mm maximum. Choose the SCJ when your application requires field-tunable end positions for setup, changeovers, or wear take-up. A fixed-stroke SC cylinder is the better choice when the stroke length is a fixed, never-changing specification.
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