The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X50-50TC 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, 50mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X50-50TC is a double-acting, single-rod pneumatic cylinder offering a field-adjustable stroke end via a rear-cap screw, with a 50 mm adjustment range on a 50 mm nominal stroke. This 63 mm bore model delivers 1559 N of push force at 0.5 MPa and features a 20 mm piston rod with M16x1.5 threads, making it a robust mid-range actuator.
Equipped with a TC centre trunnion mount, the cylinder body pivots at its midpoint to accommodate swinging loads, supplied complete with the TCM1 bracket. The integrated air cushion decelerates the piston smoothly, and the PT1/4 ports ensure straightforward pneumatic connection for commissioning or format changeover tasks.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X50-50TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 50 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. |
| ×50 | 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.
The 50 mm adjustment range lets operators quickly dial in a new end stop for different product sizes on a packaging line without mechanical modifications.
A pivoting cylinder with a trunnion mount is perfect for actuating a swinging gate on a conveyor, with the stroke fine-tuned to match the lane width.
Adjust the stroke end to accommodate varying workpiece thicknesses in a welding or assembly jig, ensuring consistent clamp force without over-travel.
Select the SCJ63X50-50TC when you need to fine-tune the stroke end position on the machine without swapping the cylinder. For higher force, step up to the 80 mm bore which provides 2513 N of push at 0.5 MPa; for a more compact footprint, the 50 mm bore offers 982 N. The centre trunnion pivot is ideal for applications where the cylinder must arc, but if a rigid fixed mount is needed, consider the basic or LB foot-mounted SCJ variant. For strokes over 300 mm, evaluate an external guide to protect the 20 mm rod from side loads.
Adjustable-stroke checklist
A screw in the rear cap limits the piston's retraction, effectively shortening the stroke end by up to 50 mm. The 50 mm nominal stroke is the maximum; you can set any shorter stroke within that range.
It can replace an SC of the same 63 mm bore and 50 mm stroke if you need adjustability, but you must match the PT port thread and TC mounting. The body is slightly longer to house the adjusting mechanism.
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