Airtac SCJ63 Standard Cylinder SCJ63X100-50STC
The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-50STC 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Nominal stroke100 mm
- Stroke adjust-50 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 28 mm
About the Airtac SCJ63 Standard Cylinder SCJ63X100-50STC
The SCJ63X100-50STC delivers a robust 1559 N push force at 0.5 MPa, combining a 63 mm bore with a 20 mm single rod for demanding linear tasks. Its rear-cap adjusting screw provides a 50 mm field-adjustable range, letting you fine-tune the stroke end position for commissioning or format changes without swapping the cylinder.
This model is configured with a built-in magnet for direct mounting of CMSG/DMSG sensors and a centre trunnion (TC) pivot for smooth swinging loads. The body length A(SCJ) is 197 mm, and the 28 mm air cushion at each end decelerates the piston quietly, protecting end caps during high-cycle operation.
Airtac SCJ63 Standard Cylinder SCJ63X100-50STC Technical Specifications
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-50STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 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.
Theoretical Output Force (Ø63mm)
| 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.
Model Code: Airtac SCJ63 Standard Cylinder SCJ63X100-50STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×100 | 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.
Where the Airtac SCJ63 Standard Cylinder SCJ63X100-50STC Is Used
Format Changeovers
Quickly dial in a new stroke end position with the 50 mm adjust screw when packaging lines switch between product sizes, eliminating mechanical stop changes.
Clamping & Pressing
Fine-tune the final clamp depth on assembly fixtures to accommodate part tolerances, using the 2805 N push force at 0.9 MPa for secure holding during bonding or welding.
Diverter Gates
The centre trunnion mount allows the cylinder to pivot as it extends, while the adjustable stroke sets the precise gate angle for sorting conveyors without reprogramming the PLC.
Is the Airtac SCJ63 Standard Cylinder SCJ63X100-50STC the Right Cylinder?
Step up to an 80 mm bore (2513 N push at 0.5 MPa) if the 1559 N force is marginal for your load, or down to 50 mm (982 N) for a lighter, faster actuator. Choose a fixed-stroke SC when the stroke never changes, or a guided cylinder if the 100 mm stroke creates side-load concerns. For a direct replacement, match the 63 mm bore, 100 mm nominal stroke, 50 mm adjust range, PT port thread, TC mount (F-SC63TC), and the -S magnet option.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ63 Standard Cylinder SCJ63X100-50STC FAQ
At 0.5 MPa, it generates 1559 N pushing and 1402 N pulling due to the single 20 mm rod. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. Always size for the lower pull force if the cylinder does work in both directions.
Yes, if your existing cylinder has a 63 mm bore, 100 mm nominal stroke, and at least a 50 mm adjust range. You must also match the centre trunnion mount (TC), the built-in magnet for sensors, and the PT port thread to ensure a drop-in fit.
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