Airtac SCJ63 Standard Cylinder SCJ63X100-30
The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-30 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. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Nominal stroke100 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 28 mm
About the Airtac SCJ63 Standard Cylinder SCJ63X100-30
The SCJ63X100-30 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, built around a 63 mm bore and a 20 mm diameter piston rod. Its rear-cap adjusting screw provides a 30 mm range to fine-tune the stroke end position, making it ideal for commissioning and process changeovers without swapping the cylinder. At a standard 0.5 MPa operating pressure, this unit delivers 1559 N of push force and 1402 N on the pull stroke, offering a robust force class for medium-duty linear tasks.
This tie-rod cylinder uses PT1/4 ports and an M16x1.5 rod thread, with an integrated air cushion length of 28 mm for smooth end-of-stroke deceleration. The SCJ body is slightly longer than a fixed-stroke SC of the same bore, with a body length A(SCJ) of 197 mm. It is rated for a maximum standard stroke of 1500 mm and operates reliably at speeds from 30 to 800 mm/s with filtered air.
Airtac SCJ63 Standard Cylinder SCJ63X100-30 Technical Specifications
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 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, 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 SCJ63X100-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×100 | 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 SCJ63 Standard Cylinder SCJ63X100-30 Is Used
Commissioning & Setup
The 30 mm adjustable stroke allows engineers to precisely dial in the actuator's end position during machine commissioning, eliminating the need for shims or custom mechanical stops.
Format Changeovers
Quickly adapt the cylinder's stroke for different product sizes on a packaging or assembly line. The rear screw adjustment makes format changes fast and repeatable without disassembling the tooling.
Wear Compensation
In clamping or pressing applications, the stroke can be incrementally extended over time to compensate for wear on pads or tooling surfaces, maintaining consistent process force and position.
Is the Airtac SCJ63 Standard Cylinder SCJ63X100-30 the Right Cylinder?
Choose the SCJ63X100-30 when you need a 1559 N push force at 0.5 MPa and the ability to adjust the stroke end by up to 30 mm on the machine. If your application requires more force, stepping up to an 80 mm bore provides 2513 N of push force; for a lighter, more compact solution, a 50 mm bore delivers 982 N. This adjustable-stroke model is the right choice over a fixed-stroke SC when you anticipate needing to fine-tune the end position for different batches or to compensate for tooling wear.
For a direct replacement, match the 63 mm bore, 100 mm nominal stroke, 30 mm adjust range, PT port thread, and basic mounting. If your application involves a stroke of 300 mm or more, consider the potential for side-loading and rod bending; an external guide rail or switching to a guided cylinder will protect the rod and bearing from premature wear.
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 SCJ63 Standard Cylinder SCJ63X100-30 FAQ
The theoretical push force at 0.5 MPa is 1559 N, and the pull force is 1402 N, due to the single-rod design. At the maximum operating pressure of 1.0 MPa, the push force reaches 2805 N.
Yes, you can replace an SC63X100 with an SCJ63X100-30 if you need the stroke-end adjustability. Ensure the port size (PT1/4), mounting style, and magnet option match your existing setup. The SCJ body is slightly longer to accommodate the adjusting screw mechanism.
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