Airtac SCJ32 Standard Cylinder SCJ32X550-50S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X550-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø32mm bore, 550mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke550 mm
- Stroke adjust-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X550-50S
The SCJ32X550-50S is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that lets you fine-tune the stroke end position by up to 50 mm without replacing the unit. With a 12 mm diameter rod and M10x1.25 knuckle thread, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa, making it a compact yet capable actuator for light automation tasks.
The built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke detection. Its 550 mm nominal stroke exceeds the standard maximum of 1000 mm for a 32 mm bore, so this is a non-standard, made-to-order configuration. The PT1/8 ports and 21 mm air cushion ensure smooth deceleration, while the 182 mm body length keeps the footprint compact.
Airtac SCJ32 Standard Cylinder SCJ32X550-50S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X550-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 550 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCJ32 Standard Cylinder SCJ32X550-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×550 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ32 Standard Cylinder SCJ32X550-50S Is Used
Commissioning Fine-Tuning
During machine setup, the 50 mm adjustment range allows technicians to dial in the exact stroke end position for a pick-and-place mechanism, eliminating the need to swap cylinders or machine custom stops.
Wear Compensation on Stops
In a conveyor diverting station, the adjusting screw can be periodically turned to compensate for wear on a mechanical end-stop, maintaining precise alignment without any disassembly.
Format Changeover
For a light-duty packaging machine handling different box sizes, operators can quickly adjust the stroke end of the pusher cylinder by up to 50 mm, enabling a rapid format changeover.
Is the Airtac SCJ32 Standard Cylinder SCJ32X550-50S the Right Cylinder?
Choose the SCJ32X550-50S when you need a field-adjustable stroke end in a light-duty, long-stroke application. If your force requirements increase, stepping up to the 40 mm bore provides 628 N of push force at the same 0.5 MPa. For applications where the stroke length is fixed after commissioning, the standard SC32 series offers a simpler, more cost-effective solution without the rear adjustment mechanism.
As a direct replacement, match this model with another AirTAC SCJ adjustable-stroke cylinder of 32 mm bore, a 550 mm nominal stroke, a 50 mm adjustment range, PT ports, and a built-in magnet. Given the 550 mm stroke, be mindful of potential rod bending under side loads; using an external guide rail or switching to a guided cylinder is recommended to protect the rod and seals.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ32 Standard Cylinder SCJ32X550-50S FAQ
A screw in the rear cap acts as an internal, adjustable end-stop for the piston. Turning the screw changes the physical stroke end position within a 50 mm range, shortening the 550 mm nominal stroke. It does not alter the cylinder's force, speed, or bore size.
The theoretical push force at 0.5 MPa is 402 N, and the pull force on the return stroke is 345 N due to the 12 mm rod reducing the effective piston area. At the maximum operating pressure of 0.9 MPa, the push force increases to 724 N.
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