The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø63mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-20 is a double-acting, single-rod pneumatic cylinder that puts 1559 N of push force at your command at 0.5 MPa, with a 20 mm rear-end stroke adjustment for precise end-position tuning. Its 20 mm rod and 28 mm air cushion deliver smooth deceleration, while the PT1/4 port and M16x1.5 rod thread integrate easily into standard pneumatic circuits.
This adjustable-stroke design allows machine builders to fine-tune the stroke end on the fly during commissioning or format changes without swapping the cylinder. The body length A is 197 mm, and the operating range spans 0.15 to 1.0 MPa, making it a robust choice for general industrial automation tasks.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 20 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. |
| -20 | 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 20 mm adjustment screw lets technicians dial in the exact stroke end position during machine setup, eliminating the need for shims or external hard stops.
Quickly adapt the cylinder's stroke for different product sizes on a packaging or sorting line by adjusting the rear screw, reducing downtime between batches.
In clamping or pressing operations, the adjustable stroke can be extended slightly to compensate for tooling or pad wear over time, maintaining consistent contact force.
Choose the SCJ63X150-20 when you need a field-adjustable end stop within a 20 mm range. If your force requirement is lower, the SCJ50 series provides 982 N push at 0.5 MPa; for higher force, the SCJ80 delivers 2513 N. For a direct replacement, match the 63 mm bore, 150 mm nominal stroke, 20 mm adjust range, PT thread, and basic mounting. If your application requires a fixed, non-adjustable stroke, the standard SC series is a more economical alternative.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The maximum push force at the 0.9 MPa operating limit is 2805 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
Yes, if the mounting envelope allows for the slightly longer body. The SCJ63X150-20 matches the 63 mm bore and 150 mm maximum stroke. Ensure your port size (PT1/4) and mounting style are compatible. The key benefit is gaining 20 mm of on-machine stroke adjustment.
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