Airtac TWG Stop Cylinder TWG40X25SR
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG40X25SR from the TWG40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke25 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 TWG40X25SR
Within the TWG40 family, order code TWG40X25SR selects the roller stopper head together with the S magnet. Like every TWG40 it is double acting and flange mounted with an adjustable mounting height, and the series is offered in 20, 25 and 30 mm strokes; this code uses the 25 mm stroke.
The Dia 40 mm bore and thicker piston rod help the stopper resist impact from loads arriving on the line. It runs on filtered air (40 um element) at 0.15-1.0 MPa through a PT1/8 port, works from -20 to +70 C, uses a bumper cushion and requires no lubrication.
Airtac TWG Stop Cylinder TWG40X25SR Technical Specifications
| Order code | TWG40X25SR |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 25 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
TWG40X25SR is the roller choice within the TWG40X25 family: it rolls at the contact point instead of the round rod (TWG40X25C), flat rod (TWG40X25B) or lever roller of TWG40X25SK and TWG40X25SKF. The lever roller codes add an adjustable oil cushion, and SKF adds self-lock, so step up only when arrival impact or spring-back is a concern. If 25 mm lift is wrong for the line, TWG40X20SR and TWG40X30SR change the stroke on the same Dia 40 flange body.
Applications
Roller conveyor pallet stop
The roller head meets loads arriving on roller conveyor, with the adjustable-height flange set to the pallet height on the frame.
Transfer points in warehouses
The Dia 40 bore double acting stopper holds totes and cartons at hand-off points between conveyor segments, raised and lowered by air.
Position-confirmed box stops
The S magnet confirms stopper position so line controls know when boxes are held at a workstation or released downstream.
FAQ
What are the key figures of the TWG40X25SR?
Double acting stopper cylinder, Dia 40 mm bore, 25 mm stroke with tolerance +1.0/0, roller stopper, magnet fitted, PT1/8 port, 0.15-1.0 MPa operating pressure, 1.5 MPa (215 psi) proof pressure, -20 to +70 C, bumper cushion, no lubrication required.
When is the R roller head the right choice versus K or C?
The roller suits lines where the load rolls onto the stopper. The K lever roller (TWG40X25SK) adds an adjustable oil cushion for a softer stop, F on TWG40X25SKF adds self-lock against spring-back, and the C round rod is the plainest head. Match the bore with the impact load and speed charts in the catalog.