Hydraulic thermal compensation for bearing systems
AssigneeSchaeffler Technologies AG & Co. KG
InventorJordan Miles
Life of this patent
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Abstract
A thermal compensation element that generates an optimal bearing pre-load. The thermal compensation element has a bearing housing with a recess, a bearing outer ring arranged at least partially within the recess, a bearing shaft with a bearing inner ring arranged axially inward of the bearing outer ring, a piston with an outer sealing ring fixed in the recess axially between the bearing housing and the bearing outer ring, and a fluid supply port. The port increases or decreases pressure at the piston via a pressurized medium, allowing adjustable axial forces applied to the end of the hearing shaft by the piston to generate optimal bearing pre-load conditions.
Claims23
A thermal compensation element, comprising:
- a bearing housing having a recess;
- a bearing outer ring arranged at least partially within the recess;
- a bearing inner ring arranged radially inward of the bearing outer ring and capable of being mounted at one end of a bearing shaft;
- a piston having an outer sealing ring fixed in the recess axially between the bearing housing and the bearing outer ring;
- and
- a fluid supply port in fluid communication between an outside of the bearing housing and a void formed between the recess of the bearing housing and the piston, the piston displacing axially in response to increasing or decreasing pressure in the void using a pressurized medium, allowing adjustable axial forces applied to one end of each of the bearing rings to generate bearing pre-load conditions.
A thermal compensation element, comprising:
- a bearing housing having a recess;
- a bearing outer ring arranged at least partially within the recess;
- a bearing inner ring arranged axially inward of the bearing outer ring and capable of being mounted at one end of a bearing shaft;
- a solid, disc-shaped piston having only an outer sealing ring fixed in the recess axially between the bearing housing and the bearing outer ring;
- and
- a fluid supply port in fluid communication between an outside of the bearing housing and a void formed between the recess of the bearing housing and the piston, the piston displacing axially in response to increasing or decreasing pressure in the void using a pressurized medium, allowing adjustable axial forces applied to one end of each the bearing rings to generate bearing pre-load conditions.
A thermal compensation element, comprising:
- a bearing housing having a recess;
- a bearing outer ring arranged at least partially within the recess;
- a bearing inner ring arranged axially inward of the bearing outer ring and capable of being mounted at one end of a bearing shaft;
- a protrusion extending from the bearing housing into the recess and being in contact with the one end of the bearing shaft;
- a non-solid piston, which has a central opening, having an outer sealing ring fixed in the recess axially between the bearing housing and the bearing outer ring and an inner sealing ring being in contact with the protrusion;
- and
- a fluid supply port in fluid communication between an outside of the bearing housing and a void formed between the recess of the bearing housing and the piston, the piston displacing axially in response to increasing or decreasing pressure in the void using a pressure medium, allowing adjustable axial forces applied to one end of each of the bearing rings to generate bearing pre-load conditions.
Dependencies are inferred from the claim text.