The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X275-100 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. Ø63mm bore, 275mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X275-100 is a double-acting, single-rod pneumatic cylinder with a 100 mm rear adjusting screw, allowing you to fine-tune the stroke end position anywhere between 175 mm and 275 mm without removing the cylinder from the machine. With a 20 mm diameter piston rod and PT1/4 ports, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, scaling up to 2805 N push at the maximum operating pressure of 0.9 MPa.
This 63 mm bore tie-rod cylinder features a 28 mm air cushion for smooth deceleration and a body length of 197 mm. The adjustable stroke is ideal for commissioning trials, format changeovers, and wear take-up, giving you precise control over the end-stop position. It is a genuine AirTAC SCJ unit built for reliable field adjustment in industrial automation tasks.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X275-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 275 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, 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. |
| ×275 | 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.
The 100 mm adjustment range lets technicians fine-tune the end-stop position during initial machine setup, eliminating the need to swap fixed-stroke cylinders or fabricate external hard stops.
On packaging or assembly lines that handle multiple product sizes, the rear screw allows operators to quickly dial in a new stroke length for each format, reducing downtime between production runs.
In clamping or pressing applications, the adjustable stroke can be used to take up mechanical wear in tooling or workpieces over time, maintaining consistent contact and force without reprogramming the machine.
Choose the SCJ63 bore when your application needs between roughly 1400 N and 2800 N of push force. If you need more force, stepping up to an 80 mm bore provides 2513 N of push at 0.5 MPa; if you need less, the 50 mm bore delivers 982 N. This adjustable-stroke model is the right pick when you need to dial in the stroke end on-site. If your stroke is fixed and never changes, a standard SC63 fixed-stroke cylinder is a simpler, more cost-effective alternative.
For a drop-in replacement, match the 63 mm bore, 275 mm nominal stroke, 100 mm adjustable range, PT1/4 port thread, and basic mounting. At this 275 mm stroke, ensure the rod is not subjected to high side loads; if lateral forces are present, add an external guide rail or consider a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the cylinder generates 1559 N of push force and 1402 N of pull force. At the maximum operating pressure of 0.9 MPa, the push force increases to 2805 N. The push force is higher than the pull force because the piston rod reduces the effective area on the return stroke.
The rear cap has an adjusting screw that sets the stroke end position. You can shorten the nominal 275 mm stroke by up to 100 mm. It does not adjust speed or force. For a direct replacement, order an SCJ63X275-100 with PT1/4 ports and basic mounting. If you need magnetic piston sensing, add the -S suffix to the model code.
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