The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-50STC 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, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X200-50STC is a double-acting, single-rod pneumatic cylinder that puts stroke-end tuning directly in your hands. With a 63 mm bore and a nominal 200 mm stroke, it delivers 1559 N of push force at 0.5 MPa, and the rear adjusting screw lets you shorten the stroke end by up to 50 mm without dismounting the unit. Its 20 mm rod and 28 mm air cushion handle deceleration smoothly.
This model is factory-equipped with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) pivot for swinging loads. The trunnion ships with the TCM1 bracket (order code F-SC63TC), making it ready to install on rotating machine members. Ports are PT1/4, the body length A(SCJ) is 197 mm, and the standard TPU seals work from -20 to +70 °C.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-50STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 200 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. |
| ×200 | 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.
During machine setup, use the 50 mm rear screw to dial in the exact stroke end position for gripper close points or ejector extensions without iterative cylinder swaps.
On packaging lines, quickly adjust the push stroke for different box sizes. The SCJ63X200-50STC lets operators reset the end stop in seconds, minimizing downtime between batches.
In clamping or pressing fixtures, the adjustable stroke compensates for tooling wear or material thickness variation over time, maintaining consistent contact force without reprogramming.
Choose this 63 mm bore when a 50 mm cylinder’s 982 N push at 0.5 MPa is borderline and you need the next force class. If your stroke is fixed after commissioning, the standard SC63X200 may be a simpler choice, but the SCJ’s 50 mm adjustment range is invaluable for format changeovers or wear take-up. For replacement, match the bore, 200 mm nominal stroke, 50 mm adjust range, PT ports, TC trunnion mount, and magnet option exactly.
At 200 mm stroke, rod bending is not yet a primary concern for this bore, but if the load applies a side force, add an external guide rail or switch to a guided cylinder. The centre trunnion mount handles pivoting motion well, but ensure the trunnion pins are aligned to avoid binding.
Adjustable-stroke checklist
At 0.5 MPa, push force is 1559 N and pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N. The pull force is lower because the rod reduces the piston area on the return side.
Yes, if you need field-adjustable stroke. The SCJ63X200-50STC has the same bore, port size (PT1/4), and rod thread (M16x1.5). Ensure your mounting accepts the slightly longer body length A(SCJ) of 197 mm and that you order the matching TC trunnion kit (F-SC63TC) if you need the pivot mount.
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