The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-20STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø50mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X100-20STC is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. With a 50 mm bore and 20 mm rod, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it a versatile actuator for mid-range linear tasks that require fine positional tuning without swapping the cylinder.
This model is equipped with a built-in magnet (S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) mount, supplied with the TCM1 bracket, allowing the cylinder to pivot during operation. The body length A(SCJ) is 194 mm, and the adjustable air cushion decelerates the piston smoothly at the stroke end, which can be shortened anywhere within the 20 mm adjustment band.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-20STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 20 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. |
| -20 | 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.
The 20 mm adjustment screw lets operators quickly fine-tune the push stroke for different box or carton sizes without mechanical disassembly, reducing downtime during product changeovers.
With the TC centre trunnion mount, this cylinder is ideal for actuating swinging diverter arms on conveyors, where the stroke end can be dialled in to perfectly align with the receiving lane.
The built-in magnet and 20 mm stroke-end adjustment allow precise clamp positioning with magnetic sensor confirmation, useful in assembly fixtures where part thickness varies slightly between batches.
Choose the SCJ50X100-20STC when your application demands a 100 mm nominal stroke that can be precisely shortened on the machine by up to 20 mm, particularly for pivoting loads where the centre trunnion mount is ideal. If you need more force, stepping up to the 63 mm bore provides 1559 N of push force at the same pressure; for a lighter, more compact solution, the 40 mm bore offers 628 N. The built-in magnet simplifies sensor integration for end-of-stroke detection.
For a fixed, non-adjustable stroke, the standard SC series is a simpler alternative. If the 100 mm stroke is used in a side-loaded orientation, consider an external guide rail or a guided cylinder to prevent rod bending. This SCJ directly replaces another AirTAC SCJ50X100-20STC with PT ports, TC mount, and magnet.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this 50 mm bore cylinder produces 982 N of push force and 825 N of pull force. The maximum push force at 0.9 MPa is 1767 N. The rear adjusting screw does not alter the cylinder's force output.
A fixed-stroke SC50X100 can physically fit, but you will lose the field-adjustable stroke feature. The SCJ50X100-20STC is the direct replacement if you need to retain the 20 mm stroke-end adjustment, centre trunnion mount, and built-in magnet for sensor compatibility.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.