Airtac SCJ50 Standard Cylinder SCJ50X800-100S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X800-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø50mm bore, 800mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke800 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X800-100S
The SCJ50X800-100S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a nominal 800 mm stroke with up to 100 mm of retraction adjustment via the rear-cap screw. This model delivers a push force of 982 N at 0.5 MPa and a maximum theoretical push of 1767 N at 0.9 MPa, making it suitable for mid-range force applications that require precise end-position tuning without replacing the cylinder.
Equipped with a built-in magnet (-S suffix), this cylinder is ready for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along its tie-rod barrel for reliable end-of-stroke detection. The 50 mm bore features a 20 mm piston rod, PT1/4 ports, and a 21 mm air cushion for smooth deceleration, with a body length A(SCJ) of 194 mm plus stroke.
Airtac SCJ50 Standard Cylinder SCJ50X800-100S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X800-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 800 mm |
| Stroke adjustment | Up to 100 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 SCJ50X800-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×800 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ50X800-100S Is Used
Commissioning & Setup
Fine-tune the 800 mm stroke end by up to 100 mm on new automation lines to perfectly align with mating tooling or stops, speeding up initial machine setup and debugging.
Format Changeovers
Quickly adjust the stop position for different product sizes on packaging or sorting conveyors without swapping out the 50 mm bore cylinder, minimizing downtime between production runs.
Wear Compensation
Compensate for mechanical wear in linkages or gripper pads over time by incrementally adjusting the stroke end, maintaining precise part placement without replacing the actuator.
Is the Airtac SCJ50 Standard Cylinder SCJ50X800-100S the Right Cylinder?
Choose the SCJ50X800-100S when your application needs a long, 800 mm stroke with the flexibility to fine-tune the end position by up to 100 mm during commissioning or changeovers. If 982 N of push force at 0.5 MPa is insufficient, stepping up to the SCJ63 series provides 1559 N of push force. For a fixed, non-adjustable stroke, the standard SC series is a more economical choice. This cylinder is a direct replacement for another AirTAC SCJ adjustable-stroke cylinder with a 50 mm bore, 800 mm nominal stroke, 100 mm adjust range, PT ports, and a magnet.
For strokes of 800 mm, carefully manage side loads to prevent rod bending or uneven seal wear. If the load is not perfectly guided, use an external guide rail or consider a guided cylinder to ensure the rod moves in a straight line and to protect the rod bearings from excessive radial force.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ50X800-100S FAQ
The push force is 982 N at 0.5 MPa and 1767 N at 0.9 MPa. The pull force is lower due to the single 20 mm rod, providing 825 N at 0.5 MPa. The rear adjusting screw only changes the stroke end position and does not alter the cylinder's output force.
A rear-cap screw allows you to shorten the stroke end by up to 100 mm from the 800 mm nominal maximum. This lets you fine-tune the piston's stop position in the field. A fixed-stroke SC cylinder has a non-adjustable stroke length and would need to be physically replaced or modified to change the stop point.
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