Airtac SCJ100 Standard Cylinder SCJ100X650-100
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X650-100 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. Ø100mm bore, 650mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke650 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X650-100
The SCJ100X650-100 is a 100 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. Its rear-cap screw provides up to 100 mm of adjustment, letting you fine-tune the 650 mm nominal stroke without removing the cylinder. At 0.5 MPa, it delivers 3927 N of push force and 3681 N on the pull stroke, driven by a 25 mm diameter piston rod.
This adjustable-stroke design is ideal for commissioning and format changeovers on long-stroke machinery. The cylinder body length A(SCJ) is 245 mm, and it uses PT1/2 ports with M20x1.5 rod threads. Cushioning is handled by a 29 mm adjustable air cushion at each end, smoothing deceleration across its 30-800 mm/s speed range.
Airtac SCJ100 Standard Cylinder SCJ100X650-100 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X650-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 650 mm |
| Stroke adjustment | Up to 100 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 SCJ100X650-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×650 | 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 SCJ100 Standard Cylinder SCJ100X650-100 Is Used
Multi-Product Conveyor Stops
The 100 mm adjustment range allows operators to quickly reposition a stop gate for different box or pallet sizes on a shared conveyor line, eliminating mechanical stop changes.
Press-Fit Depth Trials
During commissioning of a 650 mm stroke assembly press, the screw adjusts the final insertion depth in fine increments to dial in the exact press-fit specification before locking it down.
Long-Stroke Wear Compensation
On a high-cycle clamping fixture, the stroke-end screw can be advanced over time to compensate for wear in tooling or linkages, maintaining consistent clamp force without reprogramming.
Is the Airtac SCJ100 Standard Cylinder SCJ100X650-100 the Right Cylinder?
Choose the SCJ100 when you need the 3927 N push force at 0.5 MPa that this 100 mm bore provides. If your application requires more force, stepping up to the 125 mm bore (6136 N push at 0.5 MPa) is the next logical move; for a lighter, more compact installation, the 80 mm bore (2513 N push) may suffice. This model is a direct replacement for another AirTAC SCJ100X650-100 with basic mounting, PT ports, and no magnet. If your stroke is fixed and never needs field changes, a standard SC100X650 will be a simpler, more cost-effective choice.
With a 650 mm stroke, rod deflection under side load is a critical consideration. Ensure the load is guided externally and aligned axially with the rod. For applications with inherent side forces, pair the cylinder with an external linear guide or switch to a guided cylinder assembly to prevent premature seal and bearing wear.
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 SCJ100 Standard Cylinder SCJ100X650-100 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The maximum push force at the 0.9 MPa operating limit is 7068 N. The pull force is lower because the 25 mm rod reduces the effective piston area on the return stroke.
A screw in the rear end cap acts as an internal, adjustable end-stop for the piston. Turning the screw changes the stroke end position by up to 100 mm, shortening the 650 mm nominal stroke. It does not change the cylinder's force or speed, only where the piston stops on the extend stroke.
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