Airtac SCJ50 Standard Cylinder SCJ50X80-10S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X80-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø50mm bore, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke80 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X80-10S
The SCJ50X80-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, delivering 982 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides a 10 mm fine-tuning range, letting you dial in the precise stroke end position for commissioning or process tweaks without swapping the cylinder. The 50 mm bore uses a 20 mm diameter piston rod and PT1/4 ports.
This model includes a built-in magnet (-S suffix), so standard CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing. The body length A is 194 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. It operates on filtered air from 0.15 to 1.0 MPa across a -20 to +70 °C temperature range.
Airtac SCJ50 Standard Cylinder SCJ50X80-10S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X80-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 80 mm |
| Stroke adjustment | Up to 10 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 SCJ50X80-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×80 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ50X80-10S Is Used
Commissioning Fine-Tuning
During machine setup, the 10 mm adjustment screw lets technicians precisely set the end-of-stroke position for a pick-and-place arm, compensating for minor fixture variations without machining new stops.
Wear Take-Up in Clamping
In a repetitive clamping operation, the adjustable stroke can be shortened over time to compensate for pad wear, maintaining consistent clamping force without reprogramming the PLC or changing the cylinder.
Format Changeover on Packaging Lines
When a packaging machine switches between box sizes, the operator can quickly adjust the stroke end of a pusher cylinder by up to 10 mm to perfectly align with the new carton dimension.
Is the Airtac SCJ50 Standard Cylinder SCJ50X80-10S the Right Cylinder?
Choose the SCJ50X80-10S when you need to fine-tune the stroke end position on a 50 mm bore platform. If your force requirement grows, stepping up to the 63 mm bore provides 1559 N of push force at the same 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC50X80 is a simpler, cost-effective alternative. This SCJ model is a direct replacement for another AirTAC SCJ50 cylinder with an 80 mm nominal stroke, a 10 mm adjust range, PT ports, basic mounting, and a magnetic piston.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ50X80-10S FAQ
A screw mechanism in the rear cap allows you to shorten the stroke end position by up to 10 mm from its nominal 80 mm maximum. This sets a new mechanical stop for the piston's retraction, enabling fine positional adjustment without affecting the cylinder's push force of 982 N at 0.5 MPa.
No. Like all standard pneumatic cylinders, the SCJ50X80-10S will drift or drop its load if air pressure is lost or the directional valve is centered. The adjustable stroke screw only sets the end position and does not act as a lock. For load holding without pressure, you must add an external rod brake or a pilot-operated check valve.
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