Airtac SCJ50 Standard Cylinder SCJ50X65-10S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X65-10S 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, 65mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke65 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X65-10S
The AirTAC SCJ50X65-10S is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. Its rear-cap adjusting screw lets you fine-tune the stroke end by up to 10 mm, so commissioning trials and format changeovers happen without swapping the cylinder or adding external hard stops. With a 50 mm bore and 20 mm rod, it delivers 982 N of push force at 0.5 MPa, scaling to 1767 N at 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length A(SCJ) is 194 mm, and the adjustable air cushion decelerates the piston smoothly within a 21 mm cushion zone. Operating on 40 µm filtered air from 0.15 to 1.0 MPa, it is a direct replacement for any AirTAC SCJ50 cylinder with the same 65 mm nominal stroke and 10 mm adjust range.
Airtac SCJ50 Standard Cylinder SCJ50X65-10S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X65-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 65 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 SCJ50X65-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×65 | 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 SCJ50X65-10S Is Used
Commissioning & Setup
Fine-tune the end-of-stroke position by up to 10 mm during machine commissioning without removing the cylinder. The rear screw adjustment lets technicians dial in the exact stop point for grippers or pushers quickly.
Product Format Changeover
Adjust the stroke end to handle different box or pallet sizes on a packaging line. The 10 mm range accommodates minor product variations, and the built-in magnet sends a confirmed position signal to the PLC.
Wear Compensation
Compensate for tooling or seal wear in clamping fixtures over time. The adjustable screw lets operators restore the exact clamp position without replacing the cylinder, maintaining consistent 982 N push force at 0.5 MPa.
Is the Airtac SCJ50 Standard Cylinder SCJ50X65-10S the Right Cylinder?
Choose the SCJ50X65-10S when you need a mid-range 50 mm bore with a 10 mm field-adjustable stroke window for fine-tuning end positions. If your force requirement is lower, stepping down to a 40 mm bore (628 N push at 0.5 MPa) saves space and air consumption; for heavier loads, the 63 mm bore provides 1559 N push. This adjustable-stroke SCJ is ideal when the application demands on-machine stroke tweaking—if the stroke is fixed and never changes, the standard SC series offers a simpler, cost-effective alternative. For a drop-in replacement, match the 50 mm bore, 65 mm nominal stroke, 10 mm adjust range, PT port thread, and the -S magnet option. For strokes over 300 mm in this bore, evaluate side-loading and consider an external guide or a guided cylinder to protect the rod bearing.
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 SCJ50X65-10S FAQ
The push force is 982 N at 0.5 MPa and 1767 N at 0.9 MPa. The pull force is lower because the 20 mm rod reduces the effective piston area, delivering 825 N at 0.5 MPa. These values match the standard SC series of the same bore.
No. The SCJ50X65-10S is a standard double-acting cylinder and will not hold position if air pressure is exhausted or the directional valve is centered. The adjustable screw only sets the stroke end position, not a mechanical lock. For load holding without live pressure, you must add an external rod brake or a pilot-operated check valve.
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