The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-50TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø63mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-50TC is a double-acting, single-rod pneumatic cylinder that delivers 1559 N of push force at 0.5 MPa, making it a robust choice for medium-duty automation tasks. Its defining feature is the rear-cap adjusting screw, which provides up to 50 mm of field-adjustable stroke-end reduction, allowing engineers to fine-tune the piston's stop position without removing the cylinder or adding external hard stops.
This model is configured with a TC centre trunnion mount (supplied with the TCM1 bracket, order code F-SC63TC) for pivoting applications. The 63 mm bore uses a 20 mm diameter piston rod, PT1/4 ports, and an M16x1.5 rod thread. With a 28 mm air cushion and a body length of 197 mm, it operates smoothly within a 30-800 mm/s speed range and can generate up to 2805 N of force at the maximum operating pressure of 0.9 MPa.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-50TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 50 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. |
| -50 | 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.
Quickly adjust the end-stop for different product sizes on packaging or filling lines. The 50 mm adjustment range allows an operator to dial in a new stroke length in seconds without mechanical modifications.
The TC centre trunnion mount is perfect for a diverter gate on a conveyor. The adjustable stroke allows for fine-tuning the gate's open angle to ensure a smooth product transfer without jamming.
In a glue press or welding fixture, the 50 mm adjustment can compensate for tooling wear or material thickness variations over time, maintaining consistent clamping force and position.
Choose the SCJ63X150-50TC when you need a cylinder that can be precisely dialed in on the machine, particularly for swinging or pivoting loads where the TC trunnion mount is ideal. If your force requirements are lower, stepping down to a 50 mm bore reduces push force to 982 N at 0.5 MPa; for significantly higher force, the 80 mm bore provides 2513 N. For applications where the stroke is fixed and never needs adjustment, the standard SC63X150 fixed-stroke cylinder is a simpler, more cost-effective alternative.
As a direct replacement, match this model with another AirTAC SCJ adjustable-stroke cylinder of the same 63 mm bore, 150 mm nominal stroke, and 50 mm adjustment range. Ensure the replacement also has PT ports and a TC centre trunnion mount. For this 150 mm stroke, side-loading is generally not a primary concern, but always ensure the load is guided and aligned with the rod axis to prevent premature seal and bearing wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 1559 N and the pull force is 1402 N. The force increases linearly with pressure, reaching a maximum push force of 2805 N at 0.9 MPa. Because this is a single-rod cylinder, the push force is always greater than the pull force due to the rod area.
It can be a functional replacement if you have the physical space for the slightly longer body and need the adjustment feature. However, for a direct dimensional drop-in replacement for a fixed-stroke SC63, you must use another SC63. The SCJ's rear adjusting screw adds to the overall length, so check the 197 mm body length against your available space.
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