Airtac SCJ50 Standard Cylinder SCJ50X175-100S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X175-100S 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 SCJ50X175-100S
The SCJ50X175-100S is a 50 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a nominal maximum stroke of 175 mm and a generous 100 mm adjustment range via the rear-cap screw. This model delivers a push force of 982 N at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa, making it a robust actuator for mid-range industrial tasks where the end position needs fine-tuning during commissioning or changeovers.
Equipped with a built-in magnet (denoted by the -S suffix), this cylinder is ready for direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors for precise end-of-stroke detection. It features a 20 mm diameter piston rod with an M16x1.5 male thread, PT1/4 ports, and a 21 mm air cushion for smooth deceleration, all within a tie-rod body that has a base length of 194 mm.
Airtac SCJ50 Standard Cylinder SCJ50X175-100S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X175-100S |
|---|---|
| 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 SCJ50X175-100S
| 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 SCJ50X175-100S Is Used
Commissioning & Setup
The 100 mm adjustment range allows engineers to precisely dial in the actuator's end-stop on a new machine without fabricating custom mechanical stops, drastically reducing setup time.
Format Changeovers
Ideal for packaging lines where the push or eject stroke length must be quickly altered for different product sizes. The rear screw makes the changeover a simple manual adjustment, not a cylinder swap.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke can be periodically extended to compensate for wear on tooling or contact surfaces, maintaining consistent process force and position over time.
Is the Airtac SCJ50 Standard Cylinder SCJ50X175-100S the Right Cylinder?
Select the SCJ50X175-100S when you need a 50 mm bore actuator with a long 100 mm field-adjustable stroke range for fine-tuning the end position. If the 982 N push force at 0.5 MPa is insufficient, stepping up to the SCJ63 bore provides 1559 N, while a step down to the SCJ40 bore offers 628 N. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a more economical alternative.
This model is a direct replacement for another AirTAC SCJ50X175-100S cylinder with a magnet, PT ports, and basic mounting. With a 175 mm stroke, ensure the piston rod is adequately supported against side loads; if the application involves significant lateral force, consider adding an external guide rail or switching to a guided cylinder assembly to prevent rod bending and premature seal wear.
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 SCJ50X175-100S FAQ
The theoretical push force at 0.5 MPa is 982 N, and the pull force on the rod side is 825 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N. These values are identical to a fixed-stroke SC50 cylinder.
Yes, the rear adjusting screw allows you to shorten the stroke end by any amount up to 100 mm from the nominal 175 mm maximum. It sets the physical end-stop position and does not control air pressure or speed. The minimum achievable stroke for this model is 75 mm.
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