Airtac SCJ50 Standard Cylinder SCJ50X50-10S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X50-10S 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, 50mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke50 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X50-10S
The SCJ50X50-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, delivering 982 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides a 10 mm range to fine-tune the stroke end position, making it ideal for applications requiring precise mechanical stop settings without cylinder replacement. The 20 mm diameter piston rod and PT1/4 ports handle standard industrial air supply.
This model includes a built-in magnet, allowing direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. With a body length of 194 mm and an adjustable air cushion, it offers smooth deceleration. The operating range is -20 to +70 °C with the default TPU seals, suitable for general-purpose pneumatic tasks.
Airtac SCJ50 Standard Cylinder SCJ50X50-10S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X50-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 50 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 SCJ50X50-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×50 | 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 SCJ50X50-10S Is Used
Commissioning Fine-Tuning
During machine setup, the 10 mm adjustment screw allows technicians to dial in the exact cylinder stop position to align with tooling or fixtures, eliminating the need for shims or external hard stops.
Wear Compensation
In clamping or pressing operations, the adjustable stroke can be periodically shortened to compensate for wear on contact surfaces or tooling, maintaining consistent clamp force without reprogramming a controller.
Format Changeovers
For packaging or assembly lines that handle multiple product sizes, operators can quickly adjust the stroke end to accommodate different box heights or part dimensions, reducing changeover time.
Is the Airtac SCJ50 Standard Cylinder SCJ50X50-10S the Right Cylinder?
Choose this 50 mm bore for applications needing around 982 N of push force. If your load requires less force, stepping down to a 40 mm bore provides 628 N, while moving up to a 63 mm bore delivers 1559 N, both at 0.5 MPa. The SCJ is the correct choice when you need to fine-tune the stroke end on the machine; if a fixed stroke is sufficient, the standard SC series is a more economical alternative. This unit is a direct replacement for any AirTAC SCJ50X50-10S with PT ports and a magnet.
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 SCJ50X50-10S FAQ
At the standard operating pressure of 0.5 MPa, this cylinder provides 982 N of push force and 825 N of pull force. The maximum push force at 0.9 MPa is 1767 N. The pull force is lower due to the area of the 20 mm piston rod.
A screw mechanism in the rear cap limits the piston's retraction, allowing you to shorten the effective stroke by up to 10 mm from its nominal 50 mm maximum. It sets a new mechanical end-stop, but does not alter the cylinder's force or speed. The built-in magnet enables sensor-based position confirmation.
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