The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-10 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, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X100-10 is a 50 mm bore, single-rod double-acting cylinder with a field-adjustable stroke end. Its rear adjusting screw lets you shorten the stroke by up to 10 mm without removing the cylinder, delivering 982 N of push force at 0.5 MPa. The 20 mm diameter piston rod and PT1/4 ports make it a direct fit for medium-duty pneumatic tasks.
This tie-rod cylinder uses an adjustable air cushion to decelerate the piston smoothly, with a cushion length of 21 mm. The SCJ body length is 194 mm, slightly longer than a fixed-stroke SC of the same bore, to house the adjustment mechanism. It operates on 40 µm filtered air from 0.15 to 1.0 MPa and handles speeds of 30-800 mm/s.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 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.
| 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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.
Fine-tune the stroke end position during machine commissioning without swapping cylinders. The 10 mm adjustment screw allows operators to quickly dial in the exact stop point for a new product format or tooling setup.
In clamping or pressing operations, tooling or contact surfaces can wear over time. The adjustable stroke lets you extend the piston rod's end position by up to 10 mm to compensate for this wear, maintaining consistent clamp force without replacing parts.
Use the SCJ50X100-10 as an adjustable stop gate on a conveyor line. The 10 mm adjustment range allows operators to fine-tune the gate's retracted position to accommodate slightly different product widths without any mechanical disassembly.
Choose the SCJ50X100-10 when a 50 mm bore's force class (982 N push at 0.5 MPa) matches the load and you need to dial in the stroke end precisely during commissioning or changeovers. If you need more force, step up to the 63 mm bore (1559 N push at 0.5 MPa); for a lighter, more compact solution, the 40 mm bore provides 628 N. The 10 mm adjustment range is ideal for fine-tuning end positions, but if you require a wider range of adjustment, consider the -20 or -30 variants.
This cylinder is a direct replacement for another AirTAC SCJ50X100-10 with PT ports and basic mounting. If your application does not require stroke adjustability, a fixed-stroke SC50X100 will be a simpler, more economical choice. For applications with high side loads, add an external guide rail or switch to a guided cylinder.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The pull force is lower because the 20 mm piston rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 1964 N.
The SCJ has a rear-cap adjusting screw that limits the piston's out-stroke, shortening the nominal 100 mm stroke by up to 10 mm. Pick the SCJ when you need to fine-tune the stroke end on the machine for setup, format changes, or wear compensation. Choose a fixed-stroke SC if the stroke length is permanent and you want a simpler, more cost-effective cylinder.
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