Airtac SCJ50 Standard Cylinder SCJ50X160-40S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X160-40S 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. Ø50mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke160 mm
- Stroke adjust-40 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X160-40S
The SCJ50X160-40S is a 50 mm bore double-acting single-rod cylinder with a rear-cap adjusting screw that provides up to 40 mm of field-adjustable stroke reduction. At 0.5 MPa it delivers 982 N of push force and 825 N of pull force, suiting it to medium-force positioning tasks where the end stop needs fine-tuning during commissioning or after tooling wear.
This model includes a built-in magnet (-S suffix), so CMSG/DMSG/EMSG reed or solid-state sensors can be clamped directly onto the tie-rod barrel for non-contact position sensing. The 20 mm diameter rod runs in a 194 mm long body (A dimension), and the standard adjustable air cushion decelerates the piston smoothly at both ends of the 160 mm nominal stroke.
Airtac SCJ50 Standard Cylinder SCJ50X160-40S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X160-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 160 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, 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 SCJ50X160-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×160 | 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 SCJ50 Standard Cylinder SCJ50X160-40S Is Used
Commissioning & Fine-Tuning
The 40 mm adjust range allows engineers to dial in the exact stroke end position during machine setup without swapping cylinders or machining external hard stops, speeding up production line commissioning.
Wear Take-Up in Clamping
In clamping or pressing fixtures where tooling faces wear over time, the rear adjusting screw can be advanced to compensate for material loss, maintaining consistent clamp force and position without replacing the actuator.
Format Changeovers
On packaging or sorting conveyors that handle multiple product sizes, the adjustable stroke lets operators quickly reset the pusher or diverter end position for a new format, reducing downtime between batches.
Is the Airtac SCJ50 Standard Cylinder SCJ50X160-40S the Right Cylinder?
Choose the SCJ50X160-40S when you need a 50 mm bore force class (982 N push at 0.5 MPa) and the ability to shorten the stroke end by up to 40 mm without changing the cylinder. If you require more force, step up to the 63 mm bore which provides 1559 N push at the same pressure; for a lighter, more compact solution, the 40 mm bore offers 628 N push. If the stroke adjustment is not needed, the fixed-stroke SC50X160 is a simpler, slightly shorter alternative.
For a drop-in replacement, match the 50 mm bore, 160 mm nominal stroke, 40 mm adjust range, PT port thread, basic mounting, and the built-in magnet. The 160 mm stroke is well within the 1200 mm maximum standard stroke for this bore, so side-load concerns are minimal for on-axis loads; if the rod must support a transverse load, add an external linear guide or switch to a guided cylinder.
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 SCJ50 Standard Cylinder SCJ50X160-40S FAQ
At the standard 0.5 MPa operating pressure, this 50 mm bore cylinder produces 982 N of push force and 825 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 200 kgf. The pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
Yes, if you need the adjustable stroke feature. The SCJ50X160-40S shares the same 50 mm bore, PT1/4 port, and basic mounting footprint as the SC50 series, but the body length is slightly longer to accommodate the adjusting screw. Ensure the 40 mm adjust range and the built-in magnet meet your application requirements.
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