Airtac SCJ50 Standard Cylinder SCJ50X75-10
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X75-10 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, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke75 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X75-10
The SCJ50X75-10 is a 50 mm bore, double-acting single-rod pneumatic cylinder with a 75 mm nominal stroke and a 10 mm rear-end stroke adjuster. At 0.5 MPa it delivers 982 N push and 825 N pull, making it a capable mid-range actuator for tasks that need fine position tuning during commissioning or changeover.
The 20 mm diameter piston rod and 21 mm air cushion provide smooth deceleration, while the PT1/4 ports keep plumbing simple. The rear adjusting screw lets you shorten the stroke end by up to 10 mm without swapping the cylinder, so you can dial in the exact stop position on the machine.
Airtac SCJ50 Standard Cylinder SCJ50X75-10 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X75-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 75 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 SCJ50X75-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×75 | 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 SCJ50X75-10 Is Used
End-Stop Fine Tuning
Use the 10 mm rear screw to precisely dial in the retract stop position on a pick-and-place unit, compensating for minor fixture variations without reprogramming the controller.
Format Changeover
Adjust the stroke end to accommodate different product sizes on a packaging line. The 75 mm nominal stroke covers a wide range, and the 10 mm trim lets operators fine-tune each format quickly.
Wear Take-Up
On a conveyor diverter gate, the adjustable stroke compensates for pad wear over time. A simple screw turn restores full gate closure without replacing the cylinder or adding shims.
Is the Airtac SCJ50 Standard Cylinder SCJ50X75-10 the Right Cylinder?
Step up to the 63 mm bore (1559 N push at 0.5 MPa) if you need roughly 60% more force, or down to the 40 mm bore (628 N push) for a lighter, more compact actuator. If your application does not require field-adjustable stroke, the fixed-stroke SC50X75 offers the same force and mounting envelope without the rear screw. For direct replacement, match the 50 mm bore, 75 mm nominal stroke, 10 mm adjust range, PT thread, and basic mounting style.
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 SCJ50X75-10 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
Yes, if you need the 10 mm stroke adjustability. The SCJ50X75-10 shares the same 50 mm bore, 20 mm rod, PT1/4 ports, and mounting envelope as the SC50 series. Ensure the rear adjusting screw does not interfere with your machine layout. If you do not need the adjustment feature, the standard SC50X75 is a direct dimensional match.
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