Airtac SCJ50 Standard Cylinder SCJ50X500-100S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X500-100S 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. Ø50mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke500 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X500-100S
The AirTAC SCJ50X500-100S is a double-acting, single-rod pneumatic cylinder with a 50 mm bore and a nominal 500 mm stroke, equipped with a rear-cap adjusting screw that provides a full 100 mm of field-adjustable stroke-end reduction. This allows precise fine-tuning of the piston stop position without replacing the cylinder or adding external hard stops, making it ideal for commissioning and format changeovers. The built-in magnet enables direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
With a push force of 982 N at 0.5 MPa and a maximum push of 1767 N at 0.9 MPa, this cylinder delivers substantial power for medium-duty automation tasks. The 20 mm piston rod and PT1/4 port ensure robust air flow, while the 21 mm adjustable air cushion decelerates the piston smoothly at both ends. The body length A(SCJ) is 194 mm plus the 500 mm stroke, and the operating range spans -20 to +70 °C with the standard TPU seal.
Airtac SCJ50 Standard Cylinder SCJ50X500-100S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X500-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 100 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCJ50 Standard Cylinder SCJ50X500-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×500 | 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 SCJ50 Standard Cylinder SCJ50X500-100S Is Used
Commissioning & Setup
The 100 mm adjust range lets technicians fine-tune the end-stop on a new assembly line without machining custom spacers, speeding up the initial machine bring-up and debugging phase.
Product Format Changeover
On a packaging line switching between box sizes, the adjustable stroke can be quickly dialed in to match a new pusher distance, eliminating mechanical change parts and reducing downtime.
Wear Compensation
In long-running clamping or pressing fixtures, the stroke can be incrementally extended over time to compensate for pad or tooling wear, maintaining consistent clamping force without immediate part replacement.
Is the Airtac SCJ50 Standard Cylinder SCJ50X500-100S the Right Cylinder?
Choose the SCJ50X500-100S when you need a robust 50 mm bore cylinder with a long 500 mm reach and the ability to dial in the exact stroke end during setup. If the 982 N push force at 0.5 MPa is slightly over your requirement, stepping down to a 40 mm bore (628 N push) can save energy and space. For applications needing a fixed, non-adjustable stroke, the standard SC50X500 is a direct alternative. For a drop-in replacement, match the 50 mm bore, 500 mm nominal stroke, 100 mm adjust range, PT thread, and the integrated magnet.
At a 500 mm stroke, the piston rod is fully extended and susceptible to side-loading and bending. Ensure the load is guided externally with a linear rail or rod guide, or consider a guided cylinder if lateral forces are present. This model uses the basic mounting style, but foot (LB) or trunnion (TC) mounts are available as accessories to suit different machine frames.
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 SCJ50 Standard Cylinder SCJ50X500-100S FAQ
The theoretical push force at 0.5 MPa is 982 N, and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N. The pull force is lower due to the area of the 20 mm piston rod.
No, the SCJ50X500-100S is a standard double-acting cylinder and will not hold its position if air pressure is exhausted. The adjustable screw only sets the stroke end, not a lock. To hold a load safely without pressure, you must add an external rod lock or a pilot-operated check valve.
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