Airtac SCJ50 Standard Cylinder SCJ50X100-75S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 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-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X100-75S
The SCJ50X100-75S delivers 982 N of push force at 0.5 MPa, stepping up to 1767 N at the 0.9 MPa maximum operating pressure. Its 75 mm rear adjusting screw allows the effective stroke end to be fine-tuned anywhere within that range, making it a practical choice for commissioning tasks where the final stop position is determined on the machine.
This 50 mm bore model uses a 20 mm diameter piston rod with an M16x1.5 rod thread and PT1/4 ports. The integrated magnet, denoted by the -S suffix, allows standard CMSG/DMSG/EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position feedback without extra brackets.
Airtac SCJ50 Standard Cylinder SCJ50X100-75S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 75 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 SCJ50X100-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ50X100-75S Is Used
Commissioning Fine-Tuning
Dial in the exact end-stop position during initial machine setup without swapping out hard stops or cutting rods, saving hours of mechanical adjustment.
Format Changeovers
Quickly adapt the cylinder stroke for different product sizes on a packaging or sorting line by adjusting the rear screw, reducing downtime between batches.
Wear Compensation
Take up mechanical play or tooling wear over time by slightly extending the effective stroke via the rear adjuster, maintaining consistent process quality.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-75S the Right Cylinder?
For applications needing slightly less force, the 40 mm bore SCJ provides 628 N of push at 0.5 MPa, while stepping up to the 63 mm bore yields 1559 N. If the stroke does not require field adjustment, a fixed-stroke SC50X100 cylinder is a direct dimensional match. This SCJ50X100-75S is a direct replacement for another AirTAC adjustable-stroke unit with a 50 mm bore, 100 mm nominal stroke, a 75 mm adjustment range, PT ports, and a magnet.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ50X100-75S FAQ
At 0.5 MPa, it provides 982 N pushing and 825 N pulling. The maximum push force at the 0.9 MPa operating limit is 1767 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
The 75 mm range means the rear adjusting screw can shorten the stroke end by up to 75 mm from the 100 mm nominal maximum. It sets a new mechanical end position for the piston, allowing the stroke to be field-adjusted anywhere between 25 mm and 100 mm.
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