Airtac SCJ50 Standard Cylinder SCJ50X600-75
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X600-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 600mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke600 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X600-75
The SCJ50X600-75 is a 50 mm bore double-acting single-rod cylinder with a 600 mm nominal stroke and a 75 mm rear adjusting screw. At 0.5 MPa it delivers 982 N push and 825 N pull, scaling to 1767 N push at 0.9 MPa. The 20 mm piston rod and PT1/4 ports suit medium-force positioning tasks where the stroke end must be fine-tuned during commissioning or format changes.
Because the rear screw shortens the stroke end by up to 75 mm, you can dial in the exact stop position without changing the cylinder or adding external hard stops. The body length A(SCJ) is 194 mm plus stroke, making it slightly longer than the fixed-stroke SC of the same bore. Adjustable air cushion, standard TPU seals, and a -20 to +70 °C temperature range come as standard.
Airtac SCJ50 Standard Cylinder SCJ50X600-75 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X600-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 600 mm |
| Stroke adjustment | Up to 75 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 SCJ50X600-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×600 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ50X600-75 Is Used
Commissioning & Setup
Dial in the exact 600 mm stroke end-stop during machine commissioning. The 75 mm adjustment range lets technicians fine-tune the position without swapping cylinders or machining external stops.
Format Changeovers
On packaging or material-handling lines, quickly adjust the cylinder stroke to match different product sizes. The rear screw provides repeatable end-position changes within the 75 mm window.
Wear Compensation
Take up mechanical wear in linkages or tooling over time by advancing the stroke end. The 1767 N push force at 0.9 MPa handles medium-duty clamping and pressing with adjustable reach.
Is the Airtac SCJ50 Standard Cylinder SCJ50X600-75 the Right Cylinder?
Step up to the 63 mm bore SCJ if you need more force—the SCJ63 delivers 1559 N push at 0.5 MPa. If your application does not require field adjustment of the stroke end, the fixed-stroke SC50 is a simpler, shorter alternative. For guided loads where side forces are present, pair the cylinder with an external linear guide or consider a guided cylinder series.
At 600 mm stroke, rod bending under side load becomes a real concern. Ensure the load is guided externally or the cylinder is used in pure axial push/pull. For direct replacement, match the 50 mm bore, 600 mm nominal stroke, 75 mm adjust range, PT port thread, basic mounting, and no magnet. The SCJ mounting subset includes FA front flange, LB foot, and TC centre trunnion with TCM1 bracket—no FB or CA/CB options.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ50X600-75 FAQ
At 0.5 MPa, push force is 982 N and 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 20 mm rod reduces the effective piston area on the return stroke.
Yes, if you need field-adjustable stroke. The SCJ50X600-75 matches the 50 mm bore and 600 mm nominal stroke of an SC50, but adds a rear adjusting screw that shortens the stroke end by up to 75 mm. Mounting accessories from the SCJ subset (FA, LB, TC/TCM1) are required; SC flange or clevis mounts do not fit.
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