Airtac TWG Stop Cylinder TWG50X20C
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG50X20C from the TWG50 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke20 mm
- StopperRound rod
- MagnetNo magnet
- ActionDouble acting
- MountingFlange, adjustable mounting height
- BoreØ50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac TWG Stop Cylinder TWG50X20C
The TWG50X20C is the round rod version of the AirTAC TWG50 adjustable-height stopper cylinder. It has a Dia 50 mm bore, a 20 mm stroke with a +1.0/0 mm tolerance, and double acting operation so air both raises and lowers the stopper. The flange mount lets you set the stopper height on the machine, and the thick piston rod is shaped to resist impact from loads arriving on the line.
Air supply is filtered by a 40 um element and regulated between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa (215 psi) and a working temperature of -20 to +70 C. The port is PT1/8 and the cylinder uses a bumper cushion with no lubrication required, following JIS standards.
Airtac TWG Stop Cylinder TWG50X20C Technical Specifications
| Order code | TWG50X20C |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 20 mm |
| Stopper | Round rod |
| Magnet | No magnet |
| Action | Double acting |
|---|---|
| Mounting | Flange, adjustable mounting height |
| Bore | Ø50 mm |
| Strokes | 20, 25, 30 mm (+1.0/0) |
| Port | PT1/8 |
| Stopper types | Round rod, Flat rod, Roller, Lever roller, adjustable oil cushion |
| Fluid | Air (filtered by 40 µm element) |
| Operating pressure | 0.15-1.0 MPa |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to +70 °C |
| Cushion | Bumper |
| Lubrication | Not required |
Source: AirTAC Products Catalog 2026A (PDF01-P0756..P0757), TWG series specifications and ordering code.
How to choose
Pick TWG50X20C when a simple fixed round rod contact is enough to stop pallets or workpieces and the load can tolerate a firm hit, since the round rod is the basic stopper in the TWG ordering table (C code). If the load is fragile or fast, step up to TWG50X20R (roller) or TWG50X20K (lever roller with adjustable oil cushion). If you need the lever to lock and not spring back, choose TWG50X20KF. Note that this code has no magnet, so TWG50X20S is the variant to order when position sensors must detect the stopper, and TWG50X25C or TWG50X30C give longer lift on the same Dia 50 bore.
Applications
Pallet stopping on conveyor lines
The flange mount sets the stopper height so the round rod catches pallets on the line, and the 20 mm stroke lifts and lowers the rod each cycle with double acting air.
Box accumulation stations
At packaging infeeds the Dia 50 mm bore absorbs impact through its thick piston rod, holding cartons at a gate fed by PT1/8 ports between 0.15 and 1.0 MPa.
Workpiece indexing on transfer rails
The round rod end presents a simple contact face for indexing workpieces on transfer rails, running from -20 to +70 C with no lubrication required.
FAQ
What are the key figures of the TWG50X20C?
Dia 50 mm bore, 20 mm stroke (tolerance +1.0/0 mm), double acting, flange mounting with adjustable height, round rod stopper, PT1/8 port, operating pressure 0.15-1.0 MPa, proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, bumper cushion, no magnet, no lubrication required, air filtered by a 40 um element.
How do I control or sense this cylinder, and can I add a magnet later?
Switching is done externally on the PT1/8 air circuit since this code carries no magnet, so reed or Hall sensors cannot read position on the TWG50X20C itself. The ordering table lists magnet as the S suffix, so order TWG50X20S instead if sensor detection of the stopper position is required; confirm sensor compatibility from the datasheet.