Airtac SCJ100 Standard Cylinder SCJ100X650-50
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X650-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø100mm bore, 650mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke650 mm
- Stroke adjust-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X650-50
The SCJ100X650-50 is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides up to 50 mm of field-adjustable stroke reduction. With a 100 mm bore, it delivers 3927 N of push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks where the end-stop must be fine-tuned during commissioning or format changes without replacing the cylinder.
This tie-rod cylinder uses a 25 mm diameter rod and PT1/2 ports, with an adjustable air cushion to decelerate the piston near the stroke end. The body length A(SCJ) is 245 mm, and the maximum standard stroke for this bore is 1500 mm. The adjustable screw only sets the stroke end position; it does not alter the cylinder's force output or speed.
Airtac SCJ100 Standard Cylinder SCJ100X650-50 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X650-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 650 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X650-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×650 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ100 Standard Cylinder SCJ100X650-50 Is Used
End-Stop Calibration
Precisely dial in the retract stroke end during machine commissioning on a large press or clamping fixture, using the 50 mm adjustment range to compensate for varying tooling or workpiece thicknesses without mechanical stops.
Format Changeovers
Quickly adapt a material handling pusher or diverter on a conveyor line for different product sizes. The adjustable stroke allows operators to change the push distance in minutes, minimizing downtime between production runs.
Wear Compensation
Take up mechanical play or seal wear in a long-stroke actuator system over time. The rear screw can be adjusted to restore the original precise end position, extending the service life of the tooling and maintaining process accuracy.
Is the Airtac SCJ100 Standard Cylinder SCJ100X650-50 the Right Cylinder?
Choose the SCJ100X650-50 when you need to dial in a precise stroke end point on a 100 mm bore platform. If the application requires less force, stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa; for more force, the 125 mm bore provides 6136 N. A fixed-stroke SC100 cylinder is a better choice if the stroke length is permanently fixed and never needs adjustment, as it is a simpler, more cost-effective unit.
For this 650 mm stroke, consider the potential for side loading and rod bending. An external guide rail or a switch to a guided cylinder should be evaluated if the load is not purely axial. As a direct replacement, match an SCJ cylinder with a 100 mm bore, a nominal 650 mm stroke, a 50 mm adjust range, PT ports, and the same basic mounting configuration.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ100 Standard Cylinder SCJ100X650-50 FAQ
At the standard operating pressure of 0.5 MPa, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. Maximum push force at 0.9 MPa is 7068 N.
You can replace a fixed-stroke SC100X650 with an SCJ100X650-50 if you need the added benefit of a field-adjustable stroke. The SCJ has a longer body to house the adjusting screw. Ensure the mounting, port type (PT), and any magnet sensor options match your existing setup. The force output is identical.
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