Differential drive

A differential drive comprising:

• a differential carrier rotatably supported in a differential housing;
• two axle shaft gears rotatably held in cylindrical bores in the differential carrier and arranged coaxially relative to one another;
• a plurality of groups of differential gears supported in an axis-less way in bores or pockets in the differential carrier and arranged to as to be axis-parallel, one group of the differential gears engaging one of the axle shaft gears and the other group engaging the other of the axle shaft gears and each one of the differential gears of one group engaging the at least one of the differential gears of the other group;
• helically extending grooves provided in at least the tooth heads of the differential gears;
• wherein different helical grooves are oriented in opposite directions and intersect one another.

A differential drive comprising:

• a differential carrier rotatably supported in a differential housing;
• two axle shaft gears rotatably held in cylindrical bores in the differential carrier and arranged coaxially relative to one another;
• a plurality of groups of differential gears supported in an axis-less way in bores or pockets in the differential carrier and arranged to as to be axis-parallel, one group of the differential gears engaging one of the axle shaft gears and the other group engaging the other of the axle shaft gears and each one of the differential gears of one group engaging the at least one of the differential gears of the other group;
• grooves provided in at least the tooth heads of the differential gears;
• wherein the surfaces of the bores for the axle shaft gears include grooves configured substantially the same as the grooves in the tooth heads of the differential gears.

A differential drive comprising:

• a differential carrier rotatably supported in a differential housing;
• two axle shaft gears rotatably held in cylindrical bores in the differential carrier and arranged coaxially relative to one another;
• a plurality of groups of differential gears supported in an axis-less way in bores or pockets in the differential carrier and arranged so as to be axis-parallel, one group of the differential gears engaging one of the axle shaft gears and the other group engaging the other of the axle shaft gears and each one of the differential gears of one group engaging at least one of the differential gears of the other group;
• and
• honing traces provided in at least the bores or pockets for the differential gears.