The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X300-10TC 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, 300mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X300-10TC is a double-acting, single-rod pneumatic cylinder with a 63 mm bore and a 300 mm nominal stroke, equipped with a rear-cap adjusting screw that provides a 10 mm field-adjustable range for fine-tuning the stroke end position. This model delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, with a 20 mm piston rod and PT1/4 ports, making it a robust choice for applications requiring mid-stroke precision adjustments.
Supplied with a TC centre trunnion mount (including the TCM1 bracket, order code F-SC63TC), this cylinder is designed for pivoting applications where the load needs to swing. The body length A(SCJ) is 197 mm, and it features a 28 mm adjustable air cushion for smooth deceleration. This is a standard-stroke model within the 1500 mm maximum for the 63 bore.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X300-10TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 300 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. |
| ×300 | 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.
The 10 mm rear adjuster allows technicians to quickly fine-tune the end-stop position during machine commissioning without swapping hard stops or reprogramming, reducing setup time on new assembly fixtures.
With the TC centre trunnion mount, this cylinder is ideal for actuating diverter gates on conveyors. The adjustable stroke lets operators compensate for wear on the gate seal or fine-tune the open/close position over time.
In a welding or bonding fixture, the 10 mm adjustment range is perfect for setting a precise, repeatable clamp position for different part thicknesses, ensuring consistent pressure without over-stroking the mechanism.
Choose the SCJ63 when you need the force of a 63 mm bore—1559 N push at 0.5 MPa—with the ability to dial in the stroke end. If your force requirement is lower, stepping down to a 50 mm bore (982 N push) can reduce air consumption and physical size; for a significant force increase, the 80 mm bore provides 2513 N push. For this 300 mm stroke, be mindful of side-loading: if the rod is not guided externally, consider adding a guide rod or switching to a guided cylinder to prevent rod bending and premature seal wear.
This cylinder is a direct replacement for an existing AirTAC SCJ63X300-10TC with a centre trunnion mount. The TC mounting style is for loads that must pivot during the stroke. If your application requires a fixed, non-pivoting mount, the basic, FA front flange, or LB foot mount versions of the SCJ63 would be the correct alternative to a fixed-stroke SC cylinder.
Adjustable-stroke checklist
The theoretical push force is 1559 N at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa. The pull force is lower due to the 20 mm piston rod area, providing 1402 N at 0.5 MPa. These values are identical to a fixed-stroke SC63 cylinder.
The rear-cap adjusting screw limits the piston's out-stroke end position within a 10 mm range, shortening the 300 mm nominal stroke. It is a mechanical end-stop, not a locking device. The cylinder will not hold its position if air pressure is lost; an external rod lock or pilot-operated check valve is required for load holding.
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