Tandhjulsfyllare

Tandhjulsfyllare is a term used in Nordic mechanical engineering to describe a device or method for filling lubricants into gear assemblies. The exact form of a tandhjulsfyllare can vary by equipment and manufacturer, but it generally refers to a tool or fitting designed to introduce oil or grease into a gear housing or gear cavity during assembly or maintenance.

Function and operation: The filler is attached to the designated fill port and delivers lubricant from a reservoir, cartridge, or factory supply into the gear teeth, bearings, and galleries. The filling process aims to place the correct amount of lubricant and to displace air pockets. Many designs feature a controlled flow, a shut-off valve, and sometimes a dipstick or sight glass for level checking.

Design and types: Common forms include manual hand-pump fillers, gravity feed fittings, and cartridge-based systems. Some units are integrated into the gearbox housing as a fixed filler plug with a dedicated cap, while others use external hoses and adaptors. The choice depends on gear size, lubricant type, and maintenance procedures.

Applications and considerations: Tandhjulsfyllare are used in automotive transmissions, industrial gearboxes, and large mechanical systems where precise lubrication is essential. Proper filling requires using the specified lubricant grade and avoiding overfill, which can cause pressure buildup or leakage, and underfill, which risks inadequate lubrication and wear.

See also: Gearbox, Lubrication, Filler plug.