Airtac SCJ50 Standard Cylinder SCJ50X100-50FA
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-50FA 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 SCJ50X100-50FA
The SCJ50X100-50FA is a double-acting, single-rod pneumatic cylinder from the AirTAC SCJ adjustable-stroke family, delivering 982 N of push force and 825 N of pull force when operated at 0.5 MPa. Its defining feature is a rear-cap adjusting screw that provides a 50 mm field-adjustable range, allowing you to fine-tune the stroke end position without removing the cylinder from the machine. The 50 mm bore uses a 20 mm diameter piston rod with an M16x1.5 thread and PT1/4 ports, making it a robust mid-range actuator.
This model is configured with an FA front rectangular flange (mounting code F-SC50FA) for secure panel or end-face mounting, ideal for applications where the cylinder body is supported from the rod end. The standard TPU seals offer reliable operation from -20 to +70 °C, and the tie-rod construction ensures easy maintenance. With a 21 mm air cushion and a body length of 194 mm, it provides smooth deceleration at stroke ends, suitable for repetitive positioning tasks.
Airtac SCJ50 Standard Cylinder SCJ50X100-50FA Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-50FA |
|---|---|
| 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 SCJ50X100-50FA
| 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 SCJ50X100-50FA Is Used
Commissioning & Setup
The 50 mm adjust range lets technicians dial in the exact stroke end position during initial machine setup without swapping cylinders or machining custom stops, speeding up production line commissioning.
Format Changeovers
On packaging or assembly lines that handle multiple product sizes, operators can quickly adjust the cylinder stroke to accommodate different box heights or part dimensions, minimizing downtime between batches.
Wear Compensation
In clamping or pressing operations, the rear adjusting screw can be used to take up mechanical wear on tooling or workpieces over time, maintaining consistent contact pressure without reprogramming the machine.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-50FA the Right Cylinder?
Choose the SCJ50X100-50FA when you need a mid-force actuator with the flexibility to adjust the stroke end by up to 50 mm on the fly, such as during commissioning or format changeovers. If 982 N of push force at 0.5 MPa is insufficient, stepping up to the 63 mm bore SCJ63 series provides 1559 N; if space or force requirements are lower, the 40 mm bore SCJ40 series delivers 628 N. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a more cost-effective choice. This cylinder is a direct replacement for another AirTAC SCJ50 cylinder with a 100 mm nominal stroke, 50 mm adjust range, PT ports, and FA front flange mounting.
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 SCJ50X100-50FA FAQ
At the standard operating pressure of 0.5 MPa, this cylinder generates 982 N of push force and 825 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. The maximum theoretical push force at 1.0 MPa is 2000 N.
Yes, it is a direct dimensional and functional replacement for any AirTAC SCJ50 cylinder with a 100 mm nominal stroke, a 50 mm adjustable range, PT ports, and FA front flange mounting. Ensure the mounting accessory code (F-SC50FA) matches your existing setup.
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