The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-10 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, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X75-10 is a double-acting, single-rod pneumatic cylinder that integrates a rear-cap adjusting screw, giving you up to 10 mm of field-adjustable stroke-end reduction without removing the cylinder from the machine. With a 63 mm bore and a 20 mm piston rod, it delivers 1559 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need a precise, tunable end position.
Its tie-rod construction keeps service simple, while the 28 mm air cushion at each end quietly decelerates the piston. The body length A(SCJ) is 197 mm, and the standard PT1/4 port and M16x1.5 rod thread fit common pneumatic plumbing and tooling. This model ships in a basic configuration with no magnet, TPU seals, and PT threads, ready for standard industrial air systems.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 75 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. |
| ×75 | 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.
Use the 10 mm rear screw to dial in the exact stroke end during machine setup, eliminating the need to shim or reposition the cylinder body when sensors and tooling are aligned.
In clamping or pressing stations, the adjustable stroke compensates for pad wear or material thickness variation over time, maintaining consistent contact pressure without reprogramming.
Quickly adapt the cylinder's end position for different product sizes on a packaging or assembly line by turning the rear screw, reducing changeover time compared to swapping fixed-stroke cylinders.
Step up to an 80 mm bore SCJ when you need more than the 1559 N push force this 63 mm unit provides at 0.5 MPa—the SCJ80 delivers 2513 N. If your application requires a fixed, repeatable stroke with no field adjustment, the standard SC63 fixed-stroke cylinder is a simpler, more cost-effective choice. For a drop-in replacement, match the 63 mm bore, 75 mm nominal stroke, 10 mm adjust range, PT1/4 ports, and basic mounting. When using strokes longer than 300 mm on this bore, consider an external guide rail to protect the 20 mm rod from side-load bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N (the difference is due to the single 20 mm rod). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 3118 N.
Yes, if you need the adjustable stroke feature. The SCJ shares the same bore, rod, port, and mounting accessories (FA, LB, TC) as the SC63. Just ensure the 10 mm stroke reduction range suits your process, as the SCJ body is slightly longer to house the adjusting screw.
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