Airtac SCJ50 Standard Cylinder SCJ50X80-30
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X80-30 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, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke80 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X80-30
The SCJ50X80-30 is a 50 mm bore double-acting single-rod cylinder with a field-adjustable stroke end. A rear-cap screw lets you shorten the effective stroke by up to 30 mm without removing the cylinder, which is ideal for commissioning fine-tuning and format changeovers. It delivers 982 N of push force at 0.5 MPa and 1767 N at 0.9 MPa, with a 20 mm rod and M16x1.5 rod thread.
This tie-rod cylinder uses PT1/4 ports and features an adjustable air cushion (21 mm length) to decelerate the piston near stroke end. The body length A(SCJ) is 194 mm, slightly longer than the fixed-stroke SC version of the same bore. Operating pressure spans 0.15–1.0 MPa, and the standard TPU seal works from -20 to +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X80-30 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X80-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 80 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 SCJ50X80-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×80 | 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 SCJ50X80-30 Is Used
Commissioning Fine-Tuning
Adjust the stroke end by up to 30 mm during machine commissioning to perfectly align the cylinder's stop position with mating tooling or fixtures.
Wear Take-Up
Compensate for gradual wear in gripper jaws or clamping surfaces by dialing the stroke end forward, maintaining consistent clamping force without replacing the cylinder.
Format Changeover
Quickly adapt the stroke for different product sizes on a packaging or assembly line by turning the rear adjusting screw, eliminating the need for external hard stops.
Is the Airtac SCJ50 Standard Cylinder SCJ50X80-30 the Right Cylinder?
Choose the SCJ50X80-30 when you need to dial in the stroke end position during setup or after wear. If 982 N push at 0.5 MPa is marginal, stepping up to the 63 mm bore provides 1559 N push at the same pressure. For applications that never need stroke adjustment, the fixed-stroke SC50 is a simpler, lower-cost alternative. This model replaces another AirTAC SCJ adjustable-stroke cylinder with the same 50 mm bore, 80 mm nominal stroke, 30 mm adjust range, PT ports, and basic mounting.
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 SCJ50X80-30 FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N (reduced by the 20 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N.
No. The SCJ50X80-30 does not lock or hold position without live air pressure. If the load must stay in place when air is exhausted or the valve centres, you need an external rod brake, a mechanical lock, or a pilot-operated check valve.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCJ Adjustable-Stroke Cylinders
Request a Quote for Airtac SCJ50 Standard Cylinder SCJ50X80-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.