Feeder rollers
The "Feeder rollers" are the idlers installed in a conveyor belt system in the area where the bulk material is fed onto the conveyor belt.
These idlers are usually highly loaded: they not only support the conveyor belt and the bulk material, but also absorb the forces of the impact of the bulk material on the conveyor belt.
To dampen the impact forces, the feed rollers are usually equipped with buffer rings in a dense configuration.
If the loads are particularly high, hot vulcanized rubber coating is used instead of the buffer rings.
In the case of extremely high loads (e.g. individual chunks weighing up to 1t at a feed height >5m), even the highest-quality rubber lining cannot withstand the impact forces for long without additional constructive measures to dampen them. In extreme cases, it is therefore better to dispense with the rubber coating of the idlers and at the same time take other constructive measures to dampen the impact forces (see Forking garlands, Heavy duty feeding garlands).
For detailed information on idler dimensions, see "Dimensions and designs".
Quality classes of feed rolls in comparison
We have three quality classes ("Compact", "Compact Plus" and "Premium") have been defined, which we recommend as the optimum solution depending on the application-specific case. Each quality class corresponds to the type of operating conditions on site and the requirements placed on the idlers, respectively, also the manufacturing effort.
|
|
| ||
Support roller shell | ||||
Pipes | Welded, dimensionally rolled steel pipes according to EN 10305-3 | Welded, dimensionally rolled steel pipes according to EN 10305-3; with narrowed tolerances (Küpper standard) | Welded, dimensionally rolled steel pipes according to EN 10305-3; with narrowed tolerances (Küpper standard) | |
Material | S235JR according to EN 10025-2 | S235JR according to EN 10025-2 | S235JR according to EN 10025-2 | |
Bearing housing (roller bottoms) | ||||
type | Deep-drawn part | forging part | forging part | |
Materials | steel DD13 according to EN 10111 | steel C15 according to EN 10267-2 or S235JR according to EN 10025-2 | steel C15 according to EN 10267-2 or S235JR according to EN 10025-2 | |
Bearing seat | IT7 | IT7 | IT7 | |
axes | ||||
type | full axle | full axle or bending hollow axle | Full axle or bending resistant hollow axle | |
Materials | Round steel according to EN 10277 | round steel according to EN 10083-2 / pipe according to EN 10305-3 | Round steel according to EN 10083-2 / Pipe according to EN 10305-3 | |
Bearing seat | IT9 | IT6 | IT6 | |
Bearing | ||||
Factory | AKT | AKT | AKT | |
Bearing type | Deep groove ball bearing | Deep groove ball bearing | Deep groove ball bearings | Spherical roller bearings |
Bearing sizes | 6204 - 6306 | 6306 - 6312 | 6306 - 6312 | 21312 - 22318 |
Sealing | 2Z | 2Z | 2Z | - |
Storage air | C4 | C4 | C4H | C3 |
Tolerance classes | P0 | P0 | P5 | P0 |
Cage | Plastic cage | Plastic cage | Plastic cage | Sheet steel cage Brass cage |
Lubrication | 50 - 60% of free bearing volume | 50 - 60% of free bearing volume | Application specific design | |
Gasket | ||||
type | QLR Hybrid Seal | QLR Hybrid Seal | weather-shield | |
running characteristics | ||||
roundness [mm/m] | - | - | ≤ 0.2 | |
Buffer rings / lining | ||||
type | Buffer rings or hot-vulcanized rubber lining | Buffer rings or hot-vulcanized rubber lining | - | |
material | rubber | rubber | - |
Your contact person
-
Idlers sales
-
+49 (2041) 177 - 227
-
Idlers and conveyor belt rollers
-
+49 (2041) 177 - 0