Airtac SCJ50 Standard Cylinder SCJ50X75-30TC
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X75-30TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø50mm bore, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke75 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X75-30TC
The SCJ50X75-30TC is a double-acting, single-rod pneumatic cylinder engineered for applications requiring on-machine stroke fine-tuning. Its rear-cap adjusting screw provides up to 30 mm of stroke-end reduction from the 75 mm nominal maximum, letting technicians dial in the exact stopping position during commissioning or format changeovers without removing the cylinder. This model delivers 982 N of push force at 0.5 MPa and features a 20 mm diameter piston rod with an M16x1.5 male thread.
This configuration includes a TC centre trunnion mount, supplied with the TCM1 bracket, which allows the cylinder to pivot and is ideal for swinging or articulating loads. The body length A(SCJ) is 194 mm, and the unit uses PT1/4 ports with an integrated adjustable air cushion to decelerate the piston smoothly at the end of its travel. The standard TPU seal suits operating temperatures from -20 to +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X75-30TC Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X75-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 30 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 SCJ50X75-30TC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ50X75-30TC Is Used
End-Stop Calibration
Use the 30 mm adjusting screw to precisely set the retract or extend stop during machine commissioning, eliminating the need for external hard stops or shims.
Product Changeover
Quickly adjust the stroke end to accommodate different product sizes on a packaging or sorting line, reducing downtime between batch runs.
Wear Compensation
Fine-tune the stroke end position over the cylinder's service life to compensate for mechanical wear in tooling or gripper linkages, maintaining consistent operation.
Is the Airtac SCJ50 Standard Cylinder SCJ50X75-30TC the Right Cylinder?
Choose this 50 mm bore model when your load requires the 982 N push force it provides at standard plant pressure; if you need a more compact unit and can accept lower force, step down to the 40 mm bore (628 N push). For fixed-stroke applications where field adjustment is unnecessary, the standard SC50X75 is a simpler alternative. The TC centre trunnion mount makes this cylinder suitable for pivoting motion, but ensure the load is guided to prevent side-loading on the rod. A direct replacement must match the 50 mm bore, 75 mm nominal stroke, 30 mm adjustment range, PT port thread, and TC mounting style.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ50X75-30TC 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 this is a single-rod cylinder, the push force is greater than the pull force due to the rod area.
A screw in the rear cap lets you shorten the stroke end by up to 30 mm from the 75 mm nominal maximum. It sets a mechanical stop for the piston, allowing field adjustment without changing the cylinder or adding external hardware. It does not adjust force or speed.
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