Airtac TWG Stop Cylinder TWG40X20SC
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG40X20SC from the TWG40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke20 mm
- StopperRound rod
- MagnetMagnet
- ActionDouble acting
- MountingFlange, adjustable mounting height
- BoreØ40 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 TWG40X20SC
TWG40X20SC is the round rod stopper variant of the AirTAC TWG40 with the S magnet option. The round rod presents a simple, narrow contact point, and the piston magnet allows reed switches on the body to signal raised and lowered positions, so the machine knows exactly when the stopper is holding the load. The flange mount keeps the stopping height adjustable on installation, which is the defining feature of the TWG series.
It is double acting on a 40 mm bore with a 20 mm stroke (tolerance +1.0/0 mm), fed through a PT1/8 port at 0.15-1.0 MPa; proof pressure is 1.5 MPa (215 psi) and the operating temperature spans -20 to +70 C. The series follows JIS standards, uses a bumper cushion, requires no lubrication, and the air should be filtered by a 40 um element.
Airtac TWG Stop Cylinder TWG40X20SC Technical Specifications
| Order code | TWG40X20SC |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 20 mm |
| Stopper | Round rod |
| Magnet | Magnet |
| Action | Double acting |
|---|---|
| Mounting | Flange, adjustable mounting height |
| Bore | Ø40 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
Choose TWG40X20SC when a point-style round rod contact is acceptable and you want position feedback from the S magnet; the unmagnetized TWG40X20C omits that sensing option. If your load needs a flat bearing face, step to TWG40X20SB, or to the roller head TWG40X20R for gentler arrival, or the lever roller TWG40X20SK with adjustable oil cushion and optional F self-lock for dampened stops. Longer lift is available on the same round rod head as TWG40X25SC and TWG40X30SC.
Applications
Sensed pallet release points
The magnet lets switches confirm the stopper is down before the conveyor is allowed to feed the next pallet past the round rod.
Single-piece flow separation
The narrow round rod isolates one workpiece on the line, with magnet feedback tying the stopper state into the station cycle.
Machine-mounted fixture stops
Adjustable flange height plus a 20 mm lift makes the round rod a simple fixed-position stop for jigs and fixtures fed on small conveyors.
FAQ
What are the key figures of the TWG40X20SC?
40 mm bore, 20 mm stroke (+1.0/0 mm tolerance), double acting, round rod stopper, magnet included (S option), flange mounting with adjustable height, 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 lubrication required, JIS standards.
How does the round rod head differ from the other stopper options on the TWG40?
The C round rod gives a simple point contact, the B flat rod gives a wide face, the R roller lets the load roll onto the stopper, and the K lever roller adds an adjustable oil cushion with the F self-lock option. For the round rod, the main choice is with magnet (TWG40X20SC) or without (TWG40X20C), depending on whether you need position switches on the body.