Airtac SCJ50 Standard Cylinder SCJ50X80-10
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X80-10 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, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke80 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X80-10
The SCJ50X80-10 delivers a push force of 982 N at 0.5 MPa (1767 N at 0.9 MPa) from a 50 mm bore, making it a capable mid-range actuator for tasks that need on-machine stroke fine-tuning. Its rear adjusting screw provides up to 10 mm of stroke-end reduction, so you can dial in the exact stopping position without swapping the cylinder or adding external hard stops.
This double-acting, single-rod cylinder uses a 20 mm diameter rod and PT1/4 ports, with an adjustable air cushion that decelerates the piston smoothly over the last 21 mm of travel. The SCJ body length A is 194 mm, slightly longer than a fixed-stroke SC to house the adjustment mechanism, and it accepts the SCJ mounting subset: basic, FA, LB, or TC with TCM1 bracket.
Airtac SCJ50 Standard Cylinder SCJ50X80-10 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X80-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 80 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 SCJ50X80-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×80 | 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 SCJ50X80-10 Is Used
Commissioning Fine-Tuning
During machine setup, the 10 mm rear screw lets technicians precisely set the retract stop for a clamp or ejector without iterative cylinder swaps, speeding up the debug process on packaging lines.
Wear Compensation
On a pressing or staking operation, the adjustable stroke end can be advanced slightly over time to compensate for tooling wear, maintaining consistent part contact without reprogramming the machine.
Format Changeover
When a conveyor diverter handles different box widths, the operator can quickly adjust the cylinder's end position by up to 10 mm to align the pusher plate with the new product size.
Is the Airtac SCJ50 Standard Cylinder SCJ50X80-10 the Right Cylinder?
Choose the SCJ50 when your application needs roughly 1000 N of push force at standard plant air. If you need more force, step up to the 63 mm bore (1559 N push at 0.5 MPa); if your space or load is smaller, the 40 mm bore provides 628 N. The 10 mm adjustment range on this model suits commissioning tweaks and wear take-up on short-stroke clamps and stops.
For replacement, match the bore (50 mm), nominal stroke (80 mm), and 10 mm adjust range, along with the PT port thread and any mounting accessory. If your stroke is fixed and never needs field adjustment, the standard SC50X80 is a simpler, slightly shorter alternative. For strokes over 300 mm in this bore, evaluate side-loading and consider an external guide rail.
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 SCJ50X80-10 FAQ
At 0.5 MPa, push force is 982 N and pull force is 825 N (the difference is due to the 20 mm single rod). At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 1964 N. Always design for your specific working pressure.
Yes, provided the slightly longer body length (A=194 mm) fits your mounting space. The SCJ50X80-10 gives you up to 10 mm of stroke-end adjustment that the fixed SC lacks. Ensure the port thread (PT), mounting style, and any magnet sensor option match your existing setup.
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