The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-50TC 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, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X200-50TC is a double-acting, single-rod pneumatic cylinder that puts a 50 mm field-adjustable stroke range at your fingertips, letting you fine-tune the end position without swapping the unit. Its 63 mm bore generates 1559 N of push force at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa, driven by a 20 mm piston rod through PT1/4 ports.
This model comes ready to pivot with a factory-fitted TC centre trunnion mount, supplied with the TCM1 bracket (order code F-SC63TC). The rear adjusting screw shortens the nominal 200 mm stroke by up to 50 mm, making it ideal for commissioning trials, format changeovers, or taking up mechanical wear. The 28 mm air cushion at each end decelerates the piston smoothly, protecting your tooling.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-50TC |
|---|---|
| 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.
Quickly dial in a new stroke end position for different product sizes on packaging or labelling machines using the 50 mm adjustment screw, eliminating mechanical stop changes.
The centre trunnion mount allows the cylinder to swing as it actuates a gate or stop on a conveyor line, with the adjustable stroke setting the precise open or closed angle.
Fine-tune the final clamp position with the rear screw to accommodate varying workpiece thicknesses or tool wear in assembly and pressing fixtures.
Choose this 63 mm bore when a 50 mm cylinder (982 N push at 0.5 MPa) is borderline but an 80 mm unit (2513 N) is physically too large. The 200 mm nominal stroke with a 50 mm adjust range is a sweet spot for medium-reach applications that need regular end-point tuning. If your stroke never needs field adjustment, the fixed-stroke SC63X200 is a simpler, cost-effective alternative. For a direct replacement, match the SCJ63 bore, 200 mm nominal stroke, 50 mm adjust range, PT ports, and TC centre trunnion mounting. At this 200 mm stroke, side-loading is generally manageable, but for off-centre loads consider an external guide rail or a guided cylinder to protect the rod bearing.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, push force increases to 2805 N. The pull force is always lower because the 20 mm rod reduces the effective piston area on the retract stroke.
Yes, provided the mounting style matches. The SCJ63X200-50TC has a TC centre trunnion mount and a 50 mm adjustable stroke range. It is a direct dimensional replacement for an SC63 of the same nominal stroke and mounting, adding the ability to shorten the stroke end by up to 50 mm. The port size (PT1/4) and rod thread (M16x1.5) are identical.
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