The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-50TC 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X100-50TC is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly into a 50 mm bore package. Its rear-cap adjusting screw provides up to 50 mm of stroke-end reduction, letting you fine-tune the piston's stop position for commissioning, format changes, or wear take-up without removing the cylinder. With a 20 mm diameter piston rod and PT1/4 ports, it delivers 982 N of push force at 0.5 MPa, scaling to 1767 N at the maximum operating pressure of 0.9 MPa.
This model comes configured with a centre trunnion (TC) mount, supplied with the TCM1 bracket under part code F-SC50TC, which allows the cylinder to pivot and is ideal for swinging or articulating loads. The body length A(SCJ) is 194 mm, slightly longer than a fixed-stroke SC to house the adjusting mechanism. It uses the default TPU seals for a standard temperature range of -20 to +70 °C and PT threads, with an adjustable air cushion to decelerate the piston smoothly at the end of travel.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-50TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 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. |
| ×100 | 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.
During machine setup, the 50 mm adjustment range allows engineers to precisely dial in the optimal stroke end position for a new tooling setup without swapping out cylinders or machining custom stops.
On a packaging line, operators can quickly re-adjust the cylinder's stroke to accommodate a different box or product size, minimizing downtime between production runs with a simple screw adjustment.
In clamping or pressing fixtures, the adjustable stroke can be periodically tweaked to take up mechanical wear on contact surfaces or tooling, maintaining consistent clamp force and part quality over the machine's life.
Choose this 50 mm bore SCJ when you need a mid-range force actuator with the flexibility to adjust the stroke end on the machine. If your application requires more force, stepping up to a 63 mm bore SCJ provides 1559 N of push force at 0.5 MPa. For a simpler, fixed-stroke solution where no adjustment is needed, a standard SC50X100 cylinder is a direct alternative. A direct replacement must match the 50 mm bore, 100 mm nominal stroke, 50 mm adjustment range, PT port threads, and the TC centre trunnion mounting configuration. For strokes of 300 mm or more, evaluate side-loading on the 20 mm rod; an external guide rail or switching to a guided cylinder will prevent rod bending and ensure long seal life.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder generates 982 N of push force and 825 N of pull force due to the single rod's area difference. The maximum push force at the 0.9 MPa operating limit is 1767 N. The 50 mm stroke adjustment screw does not alter the cylinder's force output.
Yes, if you need field-adjustability. The SCJ50X100-50TC is dimensionally based on the SC series but includes a rear adjusting screw, making the body slightly longer. Ensure your mounting arrangement accommodates the 194 mm body length and the centre trunnion pivot. The bore, port size, and rod thread are identical to an SC50.
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