The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-30TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø50mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X150-30 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that lets you fine-tune the stroke end position by up to 30 mm. This 50 mm bore unit delivers 982 N of push force at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa, making it a capable mid-range actuator for tasks that need on-machine stroke trimming without swapping the cylinder.
Its 20 mm diameter piston rod and PT1/4 ports are standard for the 50 mm bore SCJ family. The body length A(SCJ) is 194 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. This model is configured with a centre trunnion (TC) mount, which ships with the TCM1 bracket, allowing the cylinder to pivot as it strokes—ideal for swinging or articulating loads.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 30 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. |
| -30 | 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.
During machine commissioning, the 30 mm rear adjuster lets technicians dial in the exact stroke end position without removing the cylinder or fabricating external hard stops, speeding up line start-up.
On packaging or sorting conveyors, operators can quickly adjust the pusher stroke to handle different box or product sizes, reducing changeover time between production runs.
In clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear in tooling or contact surfaces over time, maintaining consistent clamp force without replacing parts.
Choose the SCJ50X150-30 when your application requires a nominal 150 mm stroke that you can shorten by up to 30 mm during commissioning or changeover. If you need more force, step up to the 63 mm bore SCJ, which provides 1559 N of push at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC series is a simpler and more cost-effective alternative. This SCJ is a direct replacement for another AirTAC SCJ50X150-30 with PT ports, TC mount, and no magnet. For strokes of 300 mm or longer, evaluate side-loading and rod bending; an external guide rail or a guided cylinder may be required to protect the rod and seals.
Adjustable-stroke checklist
As a single-rod cylinder, push and pull forces differ. At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 2000 N (200 kgf). Always use the push force for extending work.
A rear-cap screw physically limits the piston's retraction stroke end within a 30 mm range, giving you a field-adjustable stroke without changing the cylinder's nominal 150 mm rating. Pick the SCJ when you need to fine-tune the stroke on the machine for setup, multiple product formats, or to compensate for wear. Choose a fixed-stroke SC if your stroke requirement is permanently fixed.
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