Airtac SCJ63 Standard Cylinder SCJ63X100-75
The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-75 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. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Nominal stroke100 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 28 mm
About the Airtac SCJ63 Standard Cylinder SCJ63X100-75
This SCJ63X100-75 adjustable-stroke cylinder provides a nominal 100 mm stroke that you can shorten by up to 75 mm using the rear-cap adjusting screw, giving an effective stroke range of 25–100 mm for fine-tuning end positions on the machine. The 63 mm bore delivers 1559 N of push force at 0.5 MPa and 2805 N at 0.9 MPa, driven by a 20 mm diameter piston rod with a 28 mm air cushion for smooth deceleration.
The body length A(SCJ) is 197 mm, slightly longer than a fixed-stroke SC of the same bore to accommodate the stroke-adjust mechanism. PT1/4 ports and an M16x1.5 rod thread are standard, and the cylinder operates on 40 µm filtered air from 0.15–1.0 MPa across a -20 to +70 °C temperature range.
Airtac SCJ63 Standard Cylinder SCJ63X100-75 Technical Specifications
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 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, 28 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCJ63 Standard Cylinder SCJ63X100-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 63 | 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 SCJ63 Standard Cylinder SCJ63X100-75 Is Used
Commissioning & Setup
Fine-tune the stroke end position during machine commissioning without removing the cylinder or fabricating external hard stops, cutting setup time on packaging and assembly lines.
Format Changeover
Adjust the push stroke for different product sizes on conveyors or diverters. The 75 mm adjustment range lets one cylinder handle multiple formats, reducing changeover parts inventory.
Wear Compensation
Take up mechanical wear in gripper jaws, press tools, or clamp mechanisms by advancing the stroke end with the adjusting screw, extending service intervals without replacing the actuator.
Is the Airtac SCJ63 Standard Cylinder SCJ63X100-75 the Right Cylinder?
Choose the SCJ63X100-75 when you need to dial in the stroke end position during commissioning or format changes without swapping the cylinder. If 1559 N push at 0.5 MPa is marginal, stepping up to an 80 mm bore (2513 N push at 0.5 MPa) adds force; if the load is lighter and space is tight, a 50 mm bore (982 N push) may fit. For applications where the stroke never needs field adjustment, the fixed-stroke SC63 is a simpler, lower-cost alternative.
A direct replacement must match the 63 mm bore, 100 mm nominal stroke, 75 mm adjustable range, PT1/4 ports, basic mounting, and TPU seals. At 100 mm stroke, rod buckling is unlikely under axial loads, but if the application introduces side forces, consider adding an external guide rail or switching to a guided cylinder.
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 SCJ63 Standard Cylinder SCJ63X100-75 FAQ
Push force is 1559 N at 0.5 MPa, 2182 N at 0.7 MPa, and 2805 N at the 0.9 MPa maximum operating pressure. Pull force is lower because the 20 mm rod reduces the piston area on the return side: 1402 N at 0.5 MPa. The adjusting screw does not change the force output.
Yes, if you need field-adjustable stroke. The SCJ63X100-75 has the same bore, rod diameter, port size, and mounting footprint as an SC63, but the body is slightly longer to house the rear adjusting screw. Ensure the 75 mm adjustment range covers your stroke variation needs and that the longer body fits your machine envelope.
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