Airtac SCJ50 Standard Cylinder SCJ50X100-50
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø50mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke100 mm
- Stroke adjust-50 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X100-50
The SCJ50X100-50 is a tie-rod, double-acting single-rod cylinder that puts stroke-end tuning directly in your hands. Its rear-cap adjusting screw provides a 50 mm adjustment range, letting you dial in the exact stroke position from 50 to 100 mm on the machine without swapping cylinders or adding external hard stops. With a 20 mm piston rod and PT1/4 ports, this 50 mm bore unit delivers 982 N of push force at a standard 0.5 MPa supply, scaling to 1767 N at the maximum operating pressure of 0.9 MPa.
This model features the standard TPU seal for reliable operation from -20 to +70 °C and a 21 mm air cushion to decelerate the piston quietly at end of travel. The body length A dimension is 194 mm, making it a compact solution for applications where stroke length must be fine-tuned during commissioning or changeovers. As a genuine AirTAC component, it offers consistent performance and straightforward maintenance in industrial automation tasks.
Airtac SCJ50 Standard Cylinder SCJ50X100-50 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 50 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 SCJ50X100-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ50X100-50 Is Used
Commissioning & Setup
The 50 mm adjustment range allows technicians to fine-tune the actuator's end-stop during initial machine setup without changing hard tooling, dramatically reducing commissioning time on assembly fixtures.
Product Changeovers
On packaging or sorting lines, quickly adjust the stroke to accommodate different product sizes. The screw mechanism enables a repeatable, precise stop position for each format, ensuring consistent handling.
Wear Compensation
In clamping or pressing applications, the adjustable stroke can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force and cycle timing without replacing the cylinder.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-50 the Right Cylinder?
Choose the SCJ50X100-50 when you need a mid-range force actuator with field-adjustable stroke. If your load requires less force, stepping down to the 40 mm bore SCJ40 series reduces push force to 628 N at 0.5 MPa, saving air consumption and physical space. For higher force demands, the 63 mm bore SCJ63 provides a substantial jump to 1559 N of push force at the same pressure. The 50 mm adjustment range on this model is ideal for processes that need significant end-position variability.
This cylinder is a direct replacement for any AirTAC SCJ50X100-50 with PT ports and basic mounting. If your application requires a fixed, non-adjustable stroke, the standard SC50X100 is a more cost-effective choice. For strokes of 300 mm or longer in this bore size, be mindful of side-loading on the 20 mm rod; an external guide rail or a switch to a guided cylinder is recommended to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ50X100-50 FAQ
The push force is 982 N at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa. The pull force is lower due to the single rod, providing 825 N at 0.5 MPa. These values are identical to a fixed-stroke SC50 cylinder.
Yes, if you need the adjustable stroke feature. The SCJ50X100-50 has the same bore, rod diameter, and port size as an SC50, but its body is slightly longer to accommodate the adjusting screw. Ensure your mounting space can accept the 194 mm body length and that the 50 mm adjustment range meets your stroke-end variability needs.
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