Airtac SCJ50 Standard Cylinder SCJ50X150-100
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-100 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke150 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X150-100
The SCJ50X150-100 is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. Its rear-cap adjusting screw lets you shorten the stroke end by up to 100 mm from the 150 mm nominal maximum, making it ideal for commissioning trials, format changeovers, and wear take-up without dismounting the cylinder. The 50 mm bore delivers 982 N of push force at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa, driven by a 20 mm diameter piston rod.
This tie-rod cylinder uses a PT1/4 port and an M16x1.5 rod thread, with an adjustable air cushion that decelerates the piston over the final 21 mm of travel. The SCJ body length A measures 194 mm, slightly longer than a fixed-stroke SC of the same bore to accommodate the adjusting mechanism. Standard strokes for this bore extend to 1200 mm, so this 150 mm unit is well within the standard range and available as a stock item.
Airtac SCJ50 Standard Cylinder SCJ50X150-100 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 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 SCJ50X150-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×150 | 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 SCJ50X150-100 Is Used
Format Changeover Stops
Packaging or labelling machines that switch between product sizes use the 100 mm adjust range to quickly reposition the end stop for different box heights or label positions without mechanical rework.
Commissioning & Setup
During press-fit or insertion station setup, technicians can back the screw out to find the exact insertion depth, then lock it. The 1767 N push at 0.9 MPa handles firm seating forces.
Wear Compensation
In clamping or pressing fixtures where tooling surfaces wear over time, the adjusting screw can be advanced incrementally to take up the resulting slack and maintain consistent clamping pressure.
Is the Airtac SCJ50 Standard Cylinder SCJ50X150-100 the Right Cylinder?
Choose the SCJ50X150-100 when you need to dial in a precise stroke end position repeatedly on a 50 mm bore platform. If 982 N of push force at 0.5 MPa is insufficient, stepping up to a 63 mm bore SCJ provides 1559 N at the same pressure; if space or force requirements are lower, the 40 mm bore delivers 628 N. The 100 mm adjustment range is the largest standard option for this series, giving maximum flexibility for applications where the final stop position may need significant alteration over the machine's life.
For applications where the stroke is permanently fixed after commissioning, a standard SC fixed-stroke cylinder is a more economical choice. If the 150 mm stroke creates a risk of rod bending under side load, consider adding an external linear guide or switching to a guided cylinder assembly. A direct replacement must match the 50 mm bore, 150 mm nominal stroke, 100 mm adjust range, PT1/4 port thread, basic mounting, and the absence of a magnet.
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 SCJ50X150-100 FAQ
At 0.5 MPa, it generates 982 N pushing and 825 N pulling. The push force increases to 1767 N at the maximum operating pressure of 0.9 MPa. The pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
You can if the mounting envelope accepts the slightly longer SCJ body (194 mm A-length) and you need the adjustable stroke feature. The port size (PT1/4), rod thread (M16x1.5), and mounting patterns are identical to the SC series, but you must match the 50 mm bore and ensure the 100 mm adjustment range suits your application.
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