The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X225-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø50mm bore, 225mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X225-100S is a double-acting, single-rod pneumatic cylinder with a 100 mm field-adjustable stroke end. The rear-cap screw lets you fine-tune the piston stop position without changing the cylinder, delivering a push force of 982 N at 0.5 MPa and up to 1767 N at the 0.9 MPa maximum operating pressure. The 20 mm diameter piston rod and PT1/4 ports suit a wide range of general automation tasks.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. The adjustable cushioning decelerates the piston smoothly, and the 194 mm body length keeps the footprint compact for a 50 mm bore cylinder.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X225-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 100 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. |
| ×225 | Nominal (maximum) stroke length in mm. |
| -100 | 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.
Fine-tune the end-stop during initial machine build-out over a 100 mm range, eliminating the need to stock multiple fixed-stroke cylinders for trial-and-error positioning.
Quickly adjust the stroke end to handle different product sizes on a packaging line, reducing downtime between format changes without mechanical modifications.
Take up mechanical play or tooling wear in clamping and pressing fixtures by advancing the stroke end screw, maintaining consistent contact force over the machine's life.
Choose the SCJ50X225-100S when you need to commission a machine stop position or accommodate format changes over a 100 mm range without swapping hardware. If your force requirements are lower, the SCJ40 series provides 628 N of push at 0.5 MPa; for higher forces, step up to the SCJ63 which delivers 1559 N. This cylinder is a direct replacement for another AirTAC SCJ50 with a 225 mm nominal stroke and 100 mm adjust range, matching PT ports and the -S magnet option. For strokes over 300 mm, consider an external guide to protect the 20 mm rod from side loads.
Adjustable-stroke checklist
The push force is 982 N at 0.5 MPa and reaches 1767 N at the 0.9 MPa maximum operating pressure. The pull force is lower due to the single-rod design, providing 825 N at 0.5 MPa.
Yes, if the bore, port size, and mounting match. The SCJ50X225-100S has the same envelope as an SC50 but adds a rear adjusting screw. Ensure your machine has clearance for the screw and that the 100 mm adjustment range covers your stroke variation needs.
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