The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X275-10 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. Ø63mm bore, 275mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X275-10 delivers a nominal 275 mm stroke with a 10 mm rear-cap adjusting screw, letting you dial in the exact stroke end without removing the cylinder. At 0.5 MPa it pushes with 1559 N and pulls with 1402 N, making it a strong mid-bore actuator for tasks that need a precise mechanical stop.
This 63 mm bore tie-rod cylinder uses a 20 mm piston rod, PT1/4 ports, and a 28 mm air cushion to decelerate the load. The body length A(SCJ) is 197 mm, and the push force climbs to 2805 N at the 0.9 MPa maximum operating pressure.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X275-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 275 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, 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. |
| -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.
During machine bring-up, the 10 mm screw lets technicians nudge the stroke end to match the exact tooling position without swapping cylinders or machining hard stops.
In a pneumatic clamp or press, the adjustable stroke compensates for jaw or pad wear over time, maintaining consistent clamping force without reprogramming the PLC.
On a packaging line, the SCJ63X275-10 acts as an adjustable product gate. Operators can shift the stop position by 10 mm to handle a new box size without changing the cylinder.
Choose the SCJ63 when the 50 mm bore’s 982 N push at 0.5 MPa is marginal and the 80 mm bore’s 2513 N is more force than the fixture needs. The 10 mm adjust range is ideal for fine end-stop tweaks on a machine that already has a well-defined stroke window. If your application needs a fixed, non-adjustable stroke, the standard SC63 is a simpler alternative.
For a drop-in replacement, match another AirTAC SCJ63 with a 275 mm nominal stroke, a 10 mm adjust range, PT1/4 ports, and the basic mounting style. At this 275 mm stroke, the rod is well-supported inside the bearing, but if you are pushing an off-centre load, add an external guide rail or switch to a guided cylinder to protect the rod from bending.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. The pull force is always lower because the 20 mm piston rod reduces the effective area on the return stroke.
The rear-cap adjusting screw sets the mechanical end position of the stroke, shortening it by up to 10 mm from the nominal 275 mm. It is a position limiter, not a speed control. To decelerate the load, use the built-in 28 mm air cushion and an external flow control valve.
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