Airtac TWG Stop Cylinder TWG40X30SR
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG40X30SR from the TWG40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke30 mm
- StopperRoller
- 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 TWG40X30SR
Choose the R ending and the TWG40 stopper ends in a roller rather than a rod: contact with the arriving load is rolling instead of sliding, which is the point of this code for painted cartons, shrink-wrapped packs and finished surfaces. The 40 mm bore lifts the stopper through a 30 mm stroke with a +1.0/0 mm tolerance, and the fitted S magnet gives position feedback to the machine controller.
The cylinder is double acting - air raises and lowers the stopper - with flange mounting and adjustable mounting height for setting the stopper height on the machine. Air supply is 0.15-1.0 MPa through a PT1/8 port, proof pressure is 1.5 MPa (215 psi), the working range is -20 to +70 C, the cushion is a bumper and no lubrication is needed.
Airtac TWG Stop Cylinder TWG40X30SR Technical Specifications
| Order code | TWG40X30SR |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 30 mm |
| Stopper | Roller |
| 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
This SR code sits between the rod-type stoppers and the damped lever: TWG40X30SC and TWG40X30SB give a round rod or flat rod contact, while TWG40X30SK adds a lever roller with an adjustable oil cushion and TWG40X30SKF a self-lock on top (F fits the lever roller only). Pick SR when rolling contact is enough and you want the simplest 30 mm, 40 mm bore option; 20 mm and 25 mm strokes share the same bore.
Applications
Carton stop on a belt line
The roller meets the moving carton with a rolling contact point, so printed carton faces are not dragged across a fixed rod during the stop.
Machine infeed gating
At the infeed of a filling or assembly machine the stopper releases one workpiece at a time, with the magnet confirming the 30 mm lift state to the PLC.
Storage lane end stop
Totes and bins roll down a gravity lane into the stopper; the flange with adjustable mounting height lines the roller up with the load edge.
FAQ
What are the key figures of the TWG40X30SR?
40 mm bore, 30 mm stroke (+1.0/0 mm tolerance), double acting, flange with adjustable mounting height, PT1/8 port, operating pressure 0.15-1.0 MPa (proof 1.5 MPa / 215 psi), temperature -20 to +70 C, bumper cushion, roller stopper, magnet fitted, lubrication not required.
When is the roller stopper the right TWG40 choice?
Pick the R stopper when loads arrive gently and a rolling contact point protects the product surface. For hard arrivals add the adjustable oil cushion of the TWG40X30SK, and where the load must not push the stopper back order the TWG40X30SKF with the F self-lock - that option is available on the lever roller stopper only.