Airtac SCJ50 Standard Cylinder SCJ50X500-10
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X500-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø50mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke500 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X500-10
The SCJ50X500-10 is a 50 mm bore double-acting single-rod cylinder whose rear-cap adjusting screw provides up to 10 mm of field-adjustable stroke-end reduction. With a nominal stroke of 500 mm and a push force of 982 N at 0.5 MPa (1767 N at 0.9 MPa), it suits mid-range linear tasks where commissioning or format changes demand fine position tuning without swapping the cylinder.
This tie-rod cylinder uses a 20 mm diameter piston rod, PT1/4 ports, and an M16x1.5 rod thread. The adjustable air cushion decelerates the piston over the final 21 mm, and the SCJ body length A measures 194 mm plus stroke. The screw shortens only the stroke end position; it does not alter the bore force or the nominal 500 mm rating.
Airtac SCJ50 Standard Cylinder SCJ50X500-10 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X500-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 10 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCJ50 Standard Cylinder SCJ50X500-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ50 Standard Cylinder SCJ50X500-10 Is Used
Commissioning Fine-Tuning
During machine setup, the 10 mm rear screw lets technicians dial in the exact stroke end for a 500 mm transfer or clamping move without re-plumbing or replacing the cylinder.
Wear Take-Up on Stops
In repetitive end-stop applications, the adjustable stroke compensates for pad or workpiece wear over time, maintaining precise positioning without mechanical shims.
Format Changeover
When a packaging line switches product sizes, the operator can quickly adjust the cylinder's stroke end by up to 10 mm to match the new format, reducing downtime.
Is the Airtac SCJ50 Standard Cylinder SCJ50X500-10 the Right Cylinder?
Choose the SCJ50X500-10 when the application needs a 500 mm stroke that can be trimmed back by up to 10 mm on the machine. If more force is needed, step up to the 63 mm bore (1559 N push at 0.5 MPa); for a lighter, compact build, the 40 mm bore offers 628 N. A fixed-stroke SC cylinder is a better pick when the stroke length is permanently fixed and an adjusting screw is unnecessary. For direct replacement, match the 50 mm bore, 500 mm nominal stroke, 10 mm adjust range, PT1/4 port thread, basic mounting, and confirm the magnet option is absent. At this 500 mm stroke, ensure the rod is guided externally if side loads are present, or consider a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ50 Standard Cylinder SCJ50X500-10 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N (the pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke). At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 1964 N.
No. The rear screw only sets the stroke end position within a 10 mm range. It does not hold the piston rod or the load when air pressure is removed or the valve is centered. For load holding without live pressure, an external rod lock or pilot-operated check valve is required.
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