Airtac TWG Stop Cylinder TWG40X20KF
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG40X20KF from the TWG40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke20 mm
- StopperLever roller, adjustable oil cushion, self-lock
- MagnetNo magnet
- 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 TWG40X20KF
The TWG40X20KF is the fully optioned lever roller stopper of the AirTAC TWG40 range: K selects the lever with roller tip and adjustable oil cushion for a soft, rolling stop, and the trailing F in the order code adds the self-lock. That self-lock stops the lever from springing back and pushing the stopped load backwards, which matters wherever the conveyor keeps driving against the stopper or the line is inclined.
The 40 mm double acting bore raises and lowers the stopper on air at 0.15-1.0 MPa, with a 1.5 MPa (215 psi) proof pressure and a flange whose mounting height is adjusted on the machine to suit the load carrier. Stroke is 20 mm with a +1.0/0 mm tolerance, the connection is PT1/8, temperature range is -20 to +70 C, and the unit runs without lubrication on air filtered by a 40 um element. This code includes no magnet.
Airtac TWG Stop Cylinder TWG40X20KF Technical Specifications
| Order code | TWG40X20KF |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 20 mm |
| Stopper | Lever roller, adjustable oil cushion, self-lock |
| Magnet | No 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
TWG40X20KF is the code to specify when the stopped load must stay put: the F self-lock is only available on the lever roller stopper, so if you need soft deceleration and anti-push-back together, this is the configuration. Against its siblings, TWG40X20K gives the same lever roller and oil cushion without self-lock, while TWG40X20C, TWG40X20B and TWG40X20R are plain rod, flat rod and roller faces with no cushion lever at all. For position sensing on this stopper, order the magnetic variant TWG40X20KFS instead.
Applications
Inclined or driven conveyor stops
The self-lock holds the lever down against conveyor drive force so the pallet cannot be shoved backwards through the stopper.
Pallet hand-off points at pick-up stations
The roller plus adjustable oil cushion eases the pallet to a halt, and the self-lock keeps the stop face positive while the forklift collects it.
Accumulation before an automated workhead
Sequential stops with a locked lever give a repeatable reference position for the following station, on a flange whose height is set to match the pallet.
FAQ
What are the key figures of the TWG40X20KF?
Dia 40 mm bore, 20 mm stroke (+1.0/0 mm), double acting, adjustable mounting height flange, lever roller stopper with adjustable oil cushion and F self-lock, PT1/8 port, 0.15-1.0 MPa operating pressure, 1.5 MPa (215 psi) proof pressure, -20 to +70 C, bumper cushion, 40 um air filtration, no lubrication required, no magnet.
When is the self-lock option actually needed?
Use it wherever the load or the conveyor keeps pushing after the stop: driven accumulation, inclined sections, or hand-off points where a shoved-back stopper would misplace the part. The catalog notes that without F the lever can spring back and push the stopped load backwards; with F it is held. The same lever roller with oil cushion but no lock is TWG40X20K.