Airtac SCJ50 Standard Cylinder SCJ50X160-20
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X160-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 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-20 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X160-20
The SCJ50X160-20 is a double-acting, single-rod tie-rod cylinder that puts 982 N of push force at 0.5 MPa into a compact, field-adjustable package. Its rear-cap adjusting screw provides up to 20 mm of stroke-end shortening, letting you fine-tune the piston’s stop position without swapping the cylinder or adding external hard stops. The 20 mm rod and PT1/4 ports handle standard pneumatic flows, while the 21 mm air cushion decelerates the load smoothly.
Built for commissioning trials and format changeovers, this 50 mm bore unit delivers 1767 N of push force at the maximum 0.9 MPa operating pressure. The body length A is 194 mm, and the adjustable range is ideal for taking up mechanical wear or dialling in precise end positions on the fly. Standard TPU seals cover -20 to +70 °C, and the basic mounting configuration accepts the SCJ subset of AirTAC accessories.
Airtac SCJ50 Standard Cylinder SCJ50X160-20 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X160-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 20 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 SCJ50X160-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ50X160-20 Is Used
Commissioning & Setup
The 20 mm rear screw adjustment allows technicians to quickly dial in the exact stroke end position during machine commissioning without changing the cylinder or adding external stops.
Format Changeover
On packaging or sorting lines, the adjustable stroke lets operators fine-tune the pusher or stop position for different product sizes, reducing changeover time.
Wear Compensation
The stroke-end screw can be adjusted to compensate for mechanical wear in tooling or linkages over time, maintaining precise positioning without replacing components.
Is the Airtac SCJ50 Standard Cylinder SCJ50X160-20 the Right Cylinder?
Choose the SCJ50X160-20 when you need a mid-range force actuator whose stroke end can be tuned in the field. If you require more push force, stepping up to the 63 mm bore provides 1559 N at 0.5 MPa; for a lighter, more compact solution, the 40 mm bore delivers 628 N. The adjustable stroke makes this model a better pick than a fixed-stroke SC when your application involves trial-and-error positioning or periodic wear take-up. For replacement, match the 50 mm bore, 160 mm nominal stroke, 20 mm adjust range, PT thread, and basic mounting. If side loads are present, add an external guide rail.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ50X160-20 FAQ
At 0.5 MPa, the push force 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 because the rod reduces the effective piston area on the return stroke.
A rear-cap screw shortens the stroke end by up to 20 mm, letting you fine-tune the stop position. Choose SCJ over a fixed-stroke SC when you need to adjust the stroke on the machine for commissioning, format changes, or wear take-up without swapping cylinders.
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