The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-30S 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-30S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the piston's stop position by up to 30 mm without replacing the unit. Its 20 mm rod and PT1/4 ports deliver 1559 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need commissioning flexibility.
A built-in magnet is integrated into the piston, so CMSG, DMSG, or EMSG solid-state and reed sensors can be clamped directly onto the tie-rod barrel for reliable end-of-stroke detection. The 28 mm air cushion at each end decelerates the piston quietly, and the 197 mm body length keeps the envelope compact for a 63 bore cylinder.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 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. |
| ×150 | 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.
The 30 mm screw adjustment lets technicians quickly fine-tune the actuator's end position during initial machine setup without shimming or moving external stops.
On packaging or assembly lines, the adjustable stroke allows a single cylinder model to be re-set for different product sizes, reducing changeover time and spare parts inventory.
In clamping or pressing fixtures, the stroke end can be periodically adjusted to take up mechanical wear on tooling, maintaining consistent contact force without replacing the cylinder.
Choose this model when you need to dial in a precise stroke end on the machine, such as during format changeovers or wear take-up, without adding external hard stops. The 30 mm adjustment range is set by a rear-cap screw that shortens the nominal 150 mm stroke. If your force requirement is lower, the 50 bore SCJ pushes 982 N at 0.5 MPa; if you need more, the 80 bore delivers 2513 N. For a direct replacement, match an AirTAC SCJ63 with a 150 mm nominal stroke, -30 adjust range, PT ports, basic mount, and the -S magnet option. At this 150 mm stroke, rod bending from side loads is not a major concern, but always align the load axially with the rod for best seal life.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this 63 mm bore cylinder produces 1559 N of push force and 1402 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 318 kgf.
Yes, if the mounting and porting match. The SCJ63X150-30S is a direct dimensional replacement for another AirTAC SCJ63 with a 150 mm nominal stroke and -30 adjust range. It is not an ISO 15552 cylinder, so it will not directly interchange with ISO-dimensioned actuators from other brands without checking the tie-rod layout and body length.
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