Airtac SCJ63 Standard Cylinder SCJ63X100-75FA
The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-75FA is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Nominal stroke100 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 28 mm
About the Airtac SCJ63 Standard Cylinder SCJ63X100-75FA
The SCJ63X100-75FA is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, offering a nominal 100 mm stroke that can be shortened by up to 75 mm via the rear-cap adjusting screw. This 63 mm bore model delivers a substantial 1559 N of push force at 0.5 MPa, making it suitable for medium-duty positioning tasks where the end-stop needs frequent, precise tuning without replacing the cylinder.
Equipped with a front rectangular flange (FA) for secure panel mounting, this unit uses a 20 mm diameter piston rod with an M16x1.5 thread and PT1/4 ports. The integral air cushion, with a 28 mm cushion length, ensures quiet deceleration, while the TPU seals provide reliable operation in standard temperatures from -20 to +70 °C.
Airtac SCJ63 Standard Cylinder SCJ63X100-75FA Technical Specifications
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-75FA |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 75 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, 28 mm |
| Max stroke | Up to 1500 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCJ63 Standard Cylinder SCJ63X100-75FA
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ63 Standard Cylinder SCJ63X100-75FA Is Used
Commissioning & Setup
The 75 mm adjustment range allows technicians to dial in the exact stroke end position during machine commissioning, accommodating stack-up tolerances without needing to machine custom end-stops or swap cylinders.
Format Changeovers
On packaging or assembly lines, operators can quickly adjust the cylinder's stroke end to handle different product sizes or box formats, minimizing changeover downtime with a simple screw adjustment.
Wear Compensation
In high-cycle clamping or pressing applications, the adjustable screw can be periodically advanced to compensate for tooling or pad wear, maintaining consistent clamping force and position over the cylinder's service life.
Is the Airtac SCJ63 Standard Cylinder SCJ63X100-75FA the Right Cylinder?
Choose this SCJ63 model when you need a robust 1559 N push force (at 0.5 MPa) and the ability to fine-tune the stroke end position by up to 75 mm on the machine. If your force requirement is lower, stepping down to a 50 mm bore reduces push force to 982 N; for higher demands, an 80 mm bore provides 2513 N. The front flange mount (F-SC63FA) is ideal for attaching the cylinder rigidly to a panel or end-plate.
For a direct replacement, match this cylinder with another AirTAC SCJ adjustable-stroke unit of 63 mm bore, 100 mm nominal stroke, and a 75 mm adjust range, ensuring the PT port thread and FA mounting style are identical. If the stroke end does not require field adjustment after setup, a fixed-stroke SC63X100-FA model is a simpler, more cost-effective alternative.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ63 Standard Cylinder SCJ63X100-75FA FAQ
At the standard operating pressure of 0.5 MPa, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N. The pull force is lower due to the area of the 20 mm piston rod.
A rear-cap adjusting screw lets you shorten the stroke end position by up to 75 mm from the nominal 100 mm maximum. Choose this SCJ model when the required stroke length is not yet finalized, needs to be changed for different product runs, or must be fine-tuned to compensate for mechanical wear. If the stroke is fixed and will never change, a standard SC cylinder is the more economical choice.
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