Airtac TWG Stop Cylinder TWG50X25SR
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG50X25SR from the TWG50 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
- 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 TWG50X25SR
TWG50X25SR uses the R stopper option: a roller rod end that lets arriving pallets and boxes roll up onto the stopper surface instead of hitting a fixed rod, reducing scuffing and impact noise. The cylinder behind it is the Ø50 mm double acting TWG50 body on a 25 mm stroke, flange mounted with adjustable height so the stopper can be raised or lowered to suit the conveyor deck. The S in the code means a magnet is built in for position detection.
Operation is through a PT1/8 port at 0.15-1.0 MPa, with proof pressure of 1.5 MPa (215 psi) and a -20 to +70 C temperature range. The bumper cushion plus the thicker piston rod absorb repeated impacts, and the unit follows JIS standards while needing no lubrication.
Airtac TWG Stop Cylinder TWG50X25SR Technical Specifications
| Order code | TWG50X25SR |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 25 mm |
| Stopper | Roller |
| Magnet | 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
In the ordering code the stopper letter decides the contact element: C round rod and B flat rod are fixed surfaces, R is this roller, and K is the lever roller with adjustable oil cushion. Choose TWG50X25SR when loads roll gently onto the stop and you want low wear on the product surface, without paying for the oil-cushioned lever of TWG50X25SK. If the stopped load must never push the lever back, the K plus F combination TWG50X25SKF is the locking alternative. Strokes of 20 mm and 30 mm are the neighbors to this 25 mm build.
Applications
Carton transport lines
The roller end lets boxes run onto the stopper smoothly, limiting label and corner damage on high-frequency stops along the 25 mm stroke.
Tote sorting modules
The magnet in this code feeds stop-position signals to the sorter controller while the flange mounting sets the roller height per lane.
Indexing stations
Double acting air raises and lowers the roller stopper between cycles, and the bumper cushion plus thick piston rod take the impact of each indexed part.
FAQ
What are the key figures of the TWG50X25SR?
Bore 50 mm, stroke 25 mm (tolerance +1.0/0 mm), double acting, flange mounting with adjustable height, roller stopper (R), magnet fitted (S), port PT1/8, operating pressure 0.15-1.0 MPa, proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, bumper cushion, lubrication not required, air filtered by a 40 um element.
When is the R roller stopper the right choice over the K lever roller?
The R code gives a roller rod end that rolls the load onto the stop, which reduces surface wear and impact noise but offers no adjustable oil cushion and no self-lock. If your loads arrive hard or on a slope, the K option (TWG50X25SK) adds the lever roller with adjustable oil cushion, and K plus F adds self-lock. Confirm the exact roller geometry from the datasheet before ordering.