H2KV-21-C flender corporation Helical gear unit H2

Flender/Flender Gear Units/Helical gear unit H2

at both ends with taconite at gear unit face 3 (right) and twin shaft seal at gear unit face 6 (left)9 M0R Shaft d2 with taconite - For gear units with hollow shaft with keyway (...) or hollow shaft for shrink disk (...), design: taconite seal at both ends and cover cap at one end as protection against accidental contact6 Shaft d2 with taconite - For gear units with hollow shaft with keyway (...), design: taconite seal at driven machine end and dustproof cover cap at opposite end7 Shaft d2 with taconite - For gear units with hollow shaft for shrink disk (...), design: taconite seal at driven machine end and dustproof cover cap at opposite end8 Not for types B2, B3, B4 in conjunction with motor bell housing. Siemens AG 2 Options for operation Shaft seals Labyrinth seal 1/4 Siemens MD 3.1 2Overview Labyrinth seal Labyrinth seals are especially suitable for higher operating speeds. They can only be used with gear units of H1SH type. For special protection when the gear unit is at standstill, the labyrinth seal can be combined with -ring seal that is attached to the outer surface of the labyrinth. Other features are: Contact-free and therefore wear-free No heat generated locally, so maintenance-free Minimal installation space The following criteria must be taken into account when selecting labyrinth seals: For use with stationary drives only (.. not for traveling gears) With dip lubrication or oil circulation lubrication only (other lubrication variants available on request), Extremely dusty installation locations or those subject to polluted water hazards must be avoided Shaft planes must be horizontal Refer to table for minimum input speed 1 required for dip lubrication. If the input speed is lower than the minimum input speed n1, it may be possible to use the labyrinth seal in combination with oil circulation lubrication. Radial shaft seals must otherwise be provided. To achieve preservation life in excess of 6 mont