The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X80-30TC 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. Ø63mm bore, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X80-30 is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end adjustment directly on the machine. Its rear-cap screw lets you dial the stroke back by up to 30 mm from the 80 mm nominal maximum, so commissioning, format changes, and wear take-up happen without swapping cylinders or adding external hard stops. The 63 mm bore delivers 1559 N of push force at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa.
This model ships with a TC centre trunnion mount (supplied with the TCM1 bracket, order code F-SC63TC), ideal for applications where the cylinder body needs to pivot. The 20 mm piston rod has an M16x1.5 male thread, and the adjustable air cushion is 28 mm long to decelerate the piston smoothly. Ports are PT1/4, and the standard TPU seal works from -20 to +70 °C.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X80-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 80 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, 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. |
| ×80 | 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.
Dial in the exact stroke end position during machine commissioning without re-plumbing or machining external stops. The 30 mm adjustment range lets technicians compensate for stack-up tolerances on the spot.
Quickly adapt the cylinder's stroke for different product sizes on a packaging or sorting line. The rear adjusting screw makes format changes a tool-free, repeatable operation.
As gripper pads or tooling tips wear down over thousands of cycles, the adjustable stroke end can be extended slightly to restore the original contact position, extending service intervals.
Step up to the 80 mm bore if your load needs more than 2805 N push at 0.9 MPa (the SCJ80 delivers 4523 N at that pressure). For purely fixed-stroke tasks, the standard SC63 is a simpler, slightly shorter alternative. When replacing an existing SCJ63, match the bore, the 80 mm nominal stroke, the 30 mm adjustment range, the PT port thread, and the TC centre trunnion mounting to ensure dimensional and functional interchangeability.
Adjustable-stroke checklist
Because it is a single-rod cylinder, push and pull forces differ. At 0.5 MPa, push force is 1559 N and pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N. The rear adjusting screw changes only the stroke end position, not the force output.
No. The SCJ63 is a standard double-acting cylinder and will drift or drop if pressure is lost or the directional valve is centred. The adjustable stroke screw is not a locking device. If you need to hold a load without live air pressure, add an external rod brake or a pilot-operated check valve.
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