Airtac SCJ50 Standard Cylinder SCJ50X175-100
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X175-100 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, 175mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke175 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X175-100
The SCJ50X175-100 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides a full 100 mm of field-adjustable stroke end. This lets you fine-tune the piston stop position anywhere within the 100 mm range without swapping the cylinder, making it ideal for commissioning trials and format changeovers. The 50 mm bore delivers 982 N of push force at 0.5 MPa, and the 20 mm rod diameter ensures robust linear guidance.
The tie-rod construction houses an adjustable air cushion (21 mm length) for smooth deceleration, while the PT1/4 ports supply filtered air at 0.15-1.0 MPa. With a body length A of 194 mm and a maximum standard stroke of 1200 mm for this bore, the SCJ50X175-100 sits well within standard production limits. The default TPU seal operates reliably from -20 to +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X175-100 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X175-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 175 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 SCJ50X175-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×175 | 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 SCJ50X175-100 Is Used
Commissioning & Setup
The 100 mm adjustment range allows technicians to dial in the exact stroke end during initial machine setup without fabricating mechanical stops, cutting commissioning time on assembly lines.
Product Changeover
Quickly adapt the cylinder stroke for different product sizes on a packaging or sorting line. The rear screw adjusts the end position in seconds, eliminating the need to stock multiple fixed-stroke cylinders.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke end can be periodically advanced to compensate for tooling or pad wear, maintaining consistent clamping force without replacing the actuator.
Is the Airtac SCJ50 Standard Cylinder SCJ50X175-100 the Right Cylinder?
Choose the SCJ50X175-100 when you need a mid-range stroke with generous 100 mm end-position adjustability for a 50 mm bore. If your force requirement is lower, stepping down to the 40 mm bore reduces push force to 628 N at 0.5 MPa; for heavier loads, the 63 mm bore offers 1559 N. This model is a direct replacement for an existing AirTAC SCJ50X175-100 with basic mounting, PT threads, and no magnet. If your application demands a fixed, non-adjustable stroke, the standard SC series is a simpler alternative. For strokes of this length, ensure the rod is not subjected to high side loads; consider an external guide rail or a guided cylinder if lateral forces are present.
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 SCJ50X175-100 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The maximum push force at the 0.9 MPa operating limit is 1767 N. Because it is a single-rod cylinder, push force is always greater than pull force.
A rear-cap screw sets the stroke end position within a 100 mm range, shortening the 175 mm nominal stroke. It is a mechanical end-stop adjustment only. The cylinder does not lock or hold position when air pressure is lost; an external rod brake or pilot-operated check valve is required for load holding.
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