Airtac SCJ50 Standard Cylinder SCJ50X175-10
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X175-10 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, 175mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke175 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X175-10
The SCJ50X175-10 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 10 mm of field-adjustable stroke reduction. With a 50 mm bore and 20 mm piston rod, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it a versatile actuator for mid-range linear tasks where the end position needs fine-tuning after installation.
This tie-rod cylinder uses a PT1/4 pneumatic port and features an adjustable air cushion (21 mm long) for smooth deceleration. The SCJ body is slightly longer than a fixed-stroke SC of the same nominal length to accommodate the adjusting mechanism. Its standard TPU seals and PT threads suit general industrial environments operating between -20 and +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X175-10 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X175-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 175 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 SCJ50X175-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×175 | 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 SCJ50X175-10 Is Used
Commissioning & Setup
The 10 mm adjustment screw lets technicians fine-tune the stroke end on a new machine without re-plumbing or machining external hard stops, speeding up initial line bring-up.
Wear Take-Up on Stops
In material handling, a mechanical stop can wear over time. The adjustable stroke compensates for this wear, maintaining precise part placement without immediate hardware replacement.
Format Changeover
When a packaging line switches between product sizes, the operator can quickly adjust the cylinder's end position by up to 10 mm to match the new format, reducing downtime.
Is the Airtac SCJ50 Standard Cylinder SCJ50X175-10 the Right Cylinder?
Choose the SCJ50X175-10 when you need to dial in a precise stroke end during commissioning or format changes without swapping the cylinder. If 982 N of push force is insufficient, stepping up to the 63 mm bore provides 1559 N at the same pressure. For applications that do not require stroke adjustability, the simpler fixed-stroke SC50 series is a more economical alternative. A direct replacement must match the 50 mm bore, 175 mm nominal stroke, 10 mm adjust range, and PT port thread. This basic model ships without a magnet or mounting bracket; add an FA front flange or LB foot mount if panel or surface mounting is required.
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 SCJ50X175-10 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The pull force is lower due to the 20 mm piston rod reducing the effective piston area on the retract stroke. The maximum theoretical push force at 1.0 MPa is 2000 N (200 kgf).
A screw in the rear cap limits how far the piston can extend, effectively shortening the stroke by up to 10 mm from the nominal 175 mm. It only adjusts the stroke end position and does not change the cylinder's force, speed, or the retract position.
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