The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-50 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. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X100-50 is a double-acting, single-rod pneumatic cylinder that puts a 50 mm field-adjustable stroke range at your fingertips via a rear-cap screw. With a 63 mm bore, it delivers 1559 N of push force at 0.5 MPa, scaling up to 2805 N at 0.9 MPa, making it a solid mid-range actuator for tasks that need end-position tweaking without swapping the cylinder.
Its 20 mm diameter piston rod and 28 mm air cushion work together for smooth, controlled stops, while the PT1/4 port keeps plumbing straightforward. The body length A is 197 mm, and the adjustable screw lets you shorten the stroke end anywhere within that 50 mm window—ideal for commissioning trials or format changeovers where a fixed stroke would mean extra hardware.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 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, 28 mm |
| Max stroke | Up to 1500 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | 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.
Dial in the exact end-stop position during machine bring-up without fabricating custom hard stops. The 50 mm adjustment range lets technicians quickly compensate for stack-up tolerances.
Quickly adapt a pusher or diverter to a new box size on a packaging line. Operators can adjust the stroke end in seconds, slashing downtime between production runs.
As gripper pads or tooling tips wear down, the rear screw can be advanced to restore the precise contact position, extending the service life of consumable end-effectors.
Step up to the 80 mm bore if you need more muscle (2513 N push at 0.5 MPa); step down to 50 mm (982 N) when space or force requirements are lower. This SCJ model is the right call when your application needs on-machine stroke tuning—if the stroke is truly fixed, the standard SC series saves cost. For replacement, match the 63 mm bore, 100 mm nominal stroke, 50 mm adjust range, PT thread, and basic mounting. At this 100 mm stroke, side loads are minimal, but if your tooling applies a bending moment, consider an external guide rail.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N (the difference is due to the single 20 mm rod). At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N.
Physically, yes, if you have clearance for the slightly longer rear adjusting screw housing. Functionally, you gain the ability to shorten the stroke end by up to 50 mm. Ensure the port thread (PT1/4) and mounting style match your existing setup.
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