Airtac SCJ50 Standard Cylinder SCJ50X50-10
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X50-10 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 SCJ50X50-10
The SCJ50X50-10 is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly on the machine. Its rear-cap adjusting screw provides a 10 mm field-adjustable range, so you can dial in the exact end position during commissioning or changeover without swapping the cylinder. With a 50 mm bore and 20 mm rod, it delivers 982 N of push force at 0.5 MPa, making it a solid mid-range actuator for positioning tasks.
This tie-rod cylinder uses a PT1/4 port and an M16x1.5 rod thread, with a 21 mm air cushion to decelerate the piston quietly at stroke end. The body length A is 194 mm, slightly longer than a fixed-stroke SC of the same size to accommodate the adjusting mechanism. It operates on 40 µm filtered air from 0.15 to 1.0 MPa and handles speeds of 30-800 mm/s.
Airtac SCJ50 Standard Cylinder SCJ50X50-10 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X50-10 |
|---|---|
| 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 SCJ50X50-10
| 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 SCJ50X50-10 Is Used
Commissioning Fine-Tuning
During machine setup, the 10 mm rear screw lets technicians tweak the stroke end precisely without dismounting the cylinder, speeding up the alignment of pushers or clamps.
Wear Take-Up
In repetitive pressing or clamping, the adjustable stroke compensates for pad or tooling wear over time, maintaining consistent contact pressure without reprogramming the PLC.
Small Part Stops
On a packaging line, the SCJ50X50-10 acts as a retractable stop gate. The 10 mm adjuster allows operators to fine-tune the gate's retracted position for different product sizes.
Is the Airtac SCJ50 Standard Cylinder SCJ50X50-10 the Right Cylinder?
Choose the SCJ50X50-10 when you need to fine-tune a 50 mm stroke end by up to 10 mm on the fly. If your force requirement drops, the 40 mm bore SCJ40 offers 628 N push at 0.5 MPa in a lighter package; if you need more muscle, step up to the 63 mm bore at 1559 N. This adjustable-stroke model is ideal for commissioning trials, but if your stroke is permanently fixed, a standard SC50X50 simplifies the bill of materials. For a direct replacement, match the 50 mm bore, 50 mm nominal stroke, 10 mm adjust range, PT thread, and basic mounting. Should you need position sensing, order the -S magnet variant to use CMSG/DMSG sensors.
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 SCJ50X50-10 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N (due to the 20 mm rod reducing the piston area on the return side). At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
Yes, the SCJ50X50-10 is physically interchangeable with an SC50X50 in terms of mounting footprint, but the body is slightly longer (A=194 mm) to house the rear adjusting screw. Ensure you have clearance for the extra length and that the 10 mm stroke reduction range suits your application. The port, rod thread, and mounting accessories remain the same.
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