Airtac SCJ50 Standard Cylinder SCJ50X275-10S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X275-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø50mm bore, 275mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke275 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X275-10S
The SCJ50X275-10S delivers a field-adjustable stroke end, letting you fine-tune the 275 mm nominal stroke by up to 10 mm without swapping the cylinder. This single-rod, double-acting unit provides 982 N of push force at 0.5 MPa, making it a solid mid-range actuator for commissioning and format changes.
A built-in magnet allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. With a 20 mm rod, PT1/4 ports, and a 21 mm air cushion, it shares the same robust architecture as the fixed-stroke SC series while adding on-machine adjustability.
Airtac SCJ50 Standard Cylinder SCJ50X275-10S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X275-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 275 mm |
| Stroke adjustment | Up to 10 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 SCJ50X275-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×275 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ50X275-10S Is Used
Commissioning Fine-Tuning
Dial in the exact end-stop position during machine setup with the rear adjusting screw, eliminating the need for hard stops or shims.
Format Changeover
Quickly adapt the stroke for different product sizes on a packaging line, reducing downtime between batches.
Wear Compensation
Adjust the stroke end to take up mechanical wear in grippers or linkages, maintaining consistent clamping force over time.
Is the Airtac SCJ50 Standard Cylinder SCJ50X275-10S the Right Cylinder?
For applications needing more force, stepping up to a 63 mm bore provides 1559 N of push at 0.5 MPa. If your stroke is fixed and never needs field adjustment, a standard SC50X275 cylinder is a simpler, cost-effective alternative. This SCJ matches any SCJ50 with a 275 mm nominal stroke, 10 mm adjust range, PT ports, and a magnet. At this 275 mm stroke, ensure the rod is guided externally if significant side loads are present to prevent bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ50X275-10S FAQ
At 0.5 MPa, it generates 982 N pushing and 825 N pulling. The maximum push force at the 0.9 MPa operating limit is 1767 N.
Yes, if you need the 10 mm stroke adjustability. It matches the SC50's 275 mm nominal stroke, PT1/4 ports, and tie-rod mounting footprint, but adds the rear adjusting screw and built-in magnet for sensors.
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