Airtac SCJ50 Standard Cylinder SCJ50X175-30
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X175-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 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-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X175-30
The SCJ50X175-30 provides a nominal 175 mm stroke with a 30 mm rear-end adjustment range, letting you fine-tune the piston stop position on the machine without swapping the cylinder. Its 50 mm bore and 20 mm rod deliver 982 N of push force at 0.5 MPa, scaling to 1767 N at the maximum operating pressure of 0.9 MPa.
Built on the standard SCJ tie-rod platform, this double-acting, single-rod unit includes an adjustable air cushion (21 mm length) and PT1/4 ports. The body length A is 194 mm, and it accepts the full SCJ mounting subset: basic, FA front flange, LB foot, or TC centre trunnion with TCM1 bracket.
Airtac SCJ50 Standard Cylinder SCJ50X175-30 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X175-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 175 mm |
| Stroke adjustment | Up to 30 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 SCJ50X175-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×175 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ50X175-30 Is Used
Commissioning & Setup
Use the 30 mm rear screw to quickly find the optimal stroke end during machine build and debug, then lock it in place without re-plumbing or changing the cylinder.
Format Changeovers
Adjust the stop position on a packaging or assembly line when switching between product sizes, eliminating the need for multiple fixed-stroke cylinders or hard stops.
Wear Compensation
Take up mechanical play in linkages or tooling over time by advancing the stroke end, maintaining precise part contact without a full cylinder replacement.
Is the Airtac SCJ50 Standard Cylinder SCJ50X175-30 the Right Cylinder?
Choose this cylinder when you need to dial in a precise end-of-stroke position during commissioning or product changeovers, with 30 mm of field-adjustable take-up. If the 982 N push force at 0.5 MPa is marginal, stepping up to the 63 mm bore provides 1559 N; if space or force requirements are lower, the 40 mm bore offers 628 N. For applications where the stroke is fixed and never needs field adjustment, the standard SC50X175 is a simpler, cost-effective alternative.
For a drop-in replacement, match the 50 mm bore, 175 mm nominal stroke, 30 mm adjustment range, PT thread, and any SCJ mounting accessory (FA, LB, or TC). At this 175 mm stroke, rod bending under side load is not typically a concern, but always align the load axially or add an external guide if any radial force is present.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ50X175-30 FAQ
At the standard 0.5 MPa operating pressure, it generates 982 N pushing and 825 N pulling. At the maximum 0.9 MPa, push force rises to 1767 N. The rear adjustment screw changes only the stroke end position, not the output force.
Yes, if you need field-adjustable stroke. The SCJ50X175-30 shares the same bore, rod, port, and mounting interfaces as the SC series. Ensure the 30 mm adjustment range suits your application and match the port thread (PT) and any mounting accessory (FA, LB, or TC).
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