Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-40
The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Nominal stroke500 mm
- Stroke adjust-40 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-40
The SCJ63X500-40 brings field-adjustable stroke control to a 63 mm bore tie-rod cylinder, delivering 1559 N of push force at 0.5 MPa and up to 2805 N at the 0.9 MPa maximum operating pressure. A rear-cap adjusting screw lets you shorten the stroke end by as much as 40 mm without swapping the cylinder, making it practical for commissioning trials, format changeovers, or taking up mechanical wear on long-stroke tooling.
This double-acting, single-rod unit uses a 20 mm diameter piston rod and PT1/4 ports, with a 28 mm air cushion at each end to decelerate the piston quietly. The body length A(SCJ) is 197 mm, and the standard stroke reaches 500 mm—well within the 1500 mm maximum for this bore. The default seal is TPU, rated for -20 to +70 °C, and the port thread is PT.
Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-40 Technical Specifications
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 40 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 AIRTAC SCJ63 Standard Cylinder SCJ63X500-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -40 | 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 AIRTAC SCJ63 Standard Cylinder SCJ63X500-40 Is Used
Commissioning & Fine-Tuning
Dial in the exact stroke end position on a new assembly line without cutting brackets or re-machining stops. The 40 mm adjustment range covers most trial-and-error setup needs.
Product Format Changeover
Quickly adapt a pusher or diverter station to a new box or pallet size. Operators adjust the rear screw to shorten the stroke, eliminating mechanical stop changes between production runs.
Wear Compensation
Take up gradual tooling or seal wear on a long-stroke clamp or press. The adjustable stroke end restores the original tool-contact position without replacing the cylinder or adding shims.
Is the Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X500-40 the Right Cylinder?
Step up to an 80 mm bore SCJ when you need more than 1559 N of push force at 0.5 MPa—the SCJ80 delivers 2513 N at the same pressure. If your application does not require in-field stroke changes, the fixed-stroke SC63X500 saves cost and is dimensionally shorter. For a direct replacement, match the 63 mm bore, 500 mm nominal stroke, 40 mm adjustment range, PT ports, and basic mounting; add the -S suffix if your existing cylinder uses a magnetic piston for CMSG/DMSG sensors.
At 500 mm of stroke, side-loading and rod buckling become real concerns. Use an external guide rail or consider a guided cylinder if the load is not perfectly axial, and avoid cantilevered masses that could bend the 20 mm rod.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 AIRTAC SCJ63 Standard Cylinder SCJ63X500-40 FAQ
The adjusting screw only sets the stroke end position; it does not alter the cylinder's output force. At 0.5 MPa, the SCJ63X500-40 delivers 1559 N pushing and 1402 N pulling. At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N.
Yes, if you need the 40 mm adjustable stroke feature. The SCJ shares the same bore, rod diameter (20 mm), PT1/4 ports, and mounting accessories (FA, LB, TC) as the SC63. The SCJ body is slightly longer to house the adjusting screw, so check your machine envelope. If you do not need adjustability, the SC63X500 is the direct fixed-stroke equivalent.
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