The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X350-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø50mm bore, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X350-10 delivers a nominal 350 mm stroke with a 10 mm rear-end adjustment range, letting you dial in the exact stop position during commissioning or after wear-in without replacing the cylinder. Its 50 mm bore and 20 mm piston rod generate 982 N of push force at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa.
This double-acting, single-rod cylinder uses a PT1/4 port, an M16x1.5 rod thread, and a 21 mm air cushion to decelerate the piston quietly. The tie-rod body measures 194 mm long (A dimension) and accepts the SCJ mounting subset—FA front flange, LB foot, or TC centre trunnion—so you can integrate it into existing machine frames with minimal rework.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X350-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 350 mm |
| Stroke adjustment | Up to 10 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. |
| ×350 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
Use the 10 mm rear adjusting screw to compensate for tooling wear or thermal growth on a 350 mm stroke press, keeping the final position accurate without reprogramming the controller.
Adjust the stroke end by up to 10 mm when switching product sizes on a packaging line, so the pusher stops at the correct depth for each box or tray without mechanical stops.
During machine bring-up, dial the stroke back from 350 mm to 340 mm to test clearances safely, then extend it to the full nominal stroke once the fixture alignment is confirmed.
Step up to a 63 mm bore if your application needs more than 1767 N of push force at 0.9 MPa; the SCJ63 series provides 2805 N at the same pressure. For tasks that never require stroke-end tuning, a fixed-stroke SC50X350 cuts cost and lead time. If you are replacing an existing unit, match the 50 mm bore, 350 mm nominal stroke, 10 mm adjust range, PT port thread, and the same mounting style—FA, LB, or TC.
At 350 mm of stroke, the extended rod can experience side-load deflection under off-centre loads. Fit an external linear guide or switch to a guided cylinder if the load is not perfectly axial, or keep the rod bearing well-lubricated and limit side force to the datasheet values.
Adjustable-stroke checklist
At 0.5 MPa the cylinder produces 982 N pushing and 825 N pulling (the difference is due to the single 20 mm rod reducing the piston area on the return side). At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N.
A rear-cap screw lets you shorten the stroke end by up to 10 mm from the nominal 350 mm; it does not change the bore or force. You can replace a fixed-stroke SC50X350 with this SCJ50X350-10 if you need field adjustability, provided the port thread (PT), mounting, and magnet option match.
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