
Genuine AirTAC adjustable mounting height stopper cylinder, order code TWG50X30KF from the TWG50 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
Two suffixes in one order: K for the lever roller with adjustable oil shock absorber, and F for the self-lock that AirTAC offers only on the lever roller stopper. The Dia 50 mm, 30 mm stroke (+1.0/0 mm) double acting body raises and lowers the lever with air at 0.15 to 1.0 MPa, the oil cushion softens each catch, and the self-lock prevents the lever from springing back and pushing the stopped load backwards.
That lock is what separates this code from TWG50X30K, which shares the same lever roller but relies on the internal bumper cushion alone. The unit flange mounts for adjustable stopper height, takes PT1/8 ports and air filtered by a 40 um element, accepts -20 to +70 C (proof pressure 1.5 MPa / 215 psi) and needs no lubrication. It ships without magnet, so position feedback must come from external switches.
| Order code | TWG50X30KF |
|---|---|
| Product | Adjustable mounting height Stopper Cylinder |
| Stroke | 30 mm |
| Stopper | Lever roller, adjustable oil cushion, self-lock |
| Magnet | No 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.
TWG50X30KF is the only 30 mm stroke TWG50 code that adds F, the self-lock available solely with the lever roller stopper. Compared with TWG50X30K you gain spring-back protection at the same Dia 50 bore and stroke; compared with the rod types TWG50X30C, TWG50X30B and TWG50X30R you gain the adjustable oil cushion plus the lock. Order S instead of F only if magnet sensing, not locking, is the priority.
On accumulating conveyors where queued pallets lean into the stopper, the F self-lock holds the lever against spring-back so the oil cushion stops the load without shoving it rearwards.
The Dia 50 body with 30 mm stroke and PT1/8 air feed makes a firm, cushioned gate for pallets entering storage infeed conveyors, with the lever held locked between cycles.
Where gravity-fed loads arrive with momentum, the lever roller plus adjustable oil cushion absorbs impact while the self-lock keeps the stopper positive at the lane exit.
Dia 50 mm bore, 30 mm stroke (+1.0/0 mm tolerance), double acting, lever roller stopper (code K) with adjustable oil cushion and F self-lock, no magnet, PT1/8 port, operating pressure 0.15 to 1.0 MPa with 1.5 MPa (215 psi) proof pressure, -20 to +70 C, bumper cushion, 40 um filtered air, no lubrication required.
F is the self-lock: it stops the lever from springing back and pushing the stopped load backwards after the catch. The catalog offers F only with the lever roller stopper, so it cannot be combined with the C round rod, B flat rod or R roller; it is ordered directly as the final character of codes like TWG50X30KF.