Airtac SCJ50 Standard Cylinder SCJ50X500-100
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X500-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 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-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X500-100
The SCJ50X500-100 is a double-acting, single-rod pneumatic cylinder from AirTAC, offering a nominal 500 mm stroke with a 100 mm rear adjusting screw for fine-tuning the stroke end position on the machine. This 50 mm bore cylinder delivers a push force of 982 N at 0.5 MPa and a maximum theoretical push force of 1767 N at 0.9 MPa, making it a robust actuator for mid-range industrial tasks. The 20 mm diameter piston rod and PT1/4 ports provide a solid connection, while the 21 mm air cushion at each end ensures smooth deceleration.
The adjustable-stroke design allows engineers to dial in the exact end position within a 100 mm range without swapping the cylinder or adding external hard stops. This is particularly useful for commissioning new equipment, accommodating product format changes, or compensating for mechanical wear over time. The body length A(SCJ) is 194 mm plus the 500 mm stroke, making it slightly longer than a fixed-stroke SC of the same bore and stroke.
Airtac SCJ50 Standard Cylinder SCJ50X500-100 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X500-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 100 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 SCJ50X500-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ50X500-100 Is Used
Commissioning & Setup
The 100 mm adjustment range lets technicians fine-tune the actuator end stop during initial machine bring-up, eliminating the need to cut and re-drill mounting brackets for small positional changes.
Product Format Changeover
On packaging or sorting lines, the stroke can be quickly adjusted to handle different box sizes or product widths without replacing the cylinder, reducing downtime between production runs.
Wear Compensation
In clamping or pressing applications, the rear screw can be advanced over time to take up mechanical wear in tooling or linkages, maintaining consistent end pressure without reprogramming a controller.
Is the Airtac SCJ50 Standard Cylinder SCJ50X500-100 the Right Cylinder?
Choose the SCJ50X500-100 when you need a 500 mm stroke with the ability to shorten the end position by up to 100 mm in the field. If your force requirement is lower, stepping down to the 40 mm bore (628 N push at 0.5 MPa) saves space and air consumption; for higher force, the 63 mm bore provides 1559 N push. A fixed-stroke SC cylinder is a simpler, more cost-effective choice if you never need to adjust the stroke end. For strokes of 500 mm, be mindful of side loads on the 20 mm rod—consider an external guide rail or switch to a guided cylinder if the load is not perfectly axial. This SCJ is a direct replacement for another AirTAC SCJ50X500-100 with PT ports and basic mounting.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ50X500-100 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The difference is due to the single 20 mm rod reducing the piston area on the return side. The maximum push force at the 0.9 MPa operating limit is 1767 N.
A screw in the rear cap limits how far the piston can retract. Turning the screw changes the stroke end position within a 100 mm range. It does not adjust force or speed, only the physical stop point. The 500 mm nominal stroke is the maximum achievable when the screw is fully backed out.
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