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Commercial vehicle hub bearing lubricating grease and preparation method thereof

A technology for bearing lubrication and wheels, which is applied in the direction of lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of not containing compound polyurea thickeners, etc., to reduce the risk of fat rejection, reduce consistency changes, and improve shear stability effect

Active Publication Date: 2019-12-27
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the thickener disclosed in this invention does not contain complex polyurea thickener

Method used

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  • Commercial vehicle hub bearing lubricating grease and preparation method thereof
  • Commercial vehicle hub bearing lubricating grease and preparation method thereof
  • Commercial vehicle hub bearing lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A commercial vehicle hub bearing lubricating grease, comprising the following raw material components in parts by weight: 81.4% of base oil, 15% of composite thickener, 1.8% of composite adhesive, 0.9% of antioxidant, and 0.9% of extreme pressure and antiwear agent %, antirust agent 0.005%, wherein, composite polyurea thickener: composite calcium sulfonate thickener: composite lithium thickener=2:1:7.

[0045] The preparation method comprises the following steps:

[0046] 1) Add 1.16wt% overbased calcium petroleum sulfonate and 0.20wt% water into the reaction kettle, stir, heat up to 90-100°C, and stir at constant temperature for 35 minutes;

[0047] 2) Add 0.10wt% lauryl hydroxystearic acid and 0.05wt% calcium hydroxide (dilute with 3 times water to form a suspension when used), heat up to 140-150°C, and stir at constant temperature for 35 minutes;

[0048] 3) Cool to 90-100°C, add 30wt% base oil and 6.62wt% lauryl hydroxystearic acid, and stir at constant temperature...

Embodiment 2

[0059] A commercial vehicle hub bearing lubricating grease, comprising the following raw material components in parts by weight: 81.4% of base oil, 15% of composite thickener, 1.8% of composite adhesive, 0.9% of antioxidant, and 0.9% of extreme pressure and antiwear agent %, antirust agent 0.005%, wherein, composite polyurea thickener: composite calcium sulfonate thickener: composite lithium thickener=3:2:5.

[0060] The preparation method comprises the following steps:

[0061] 1) Add 2.31wt% overbased calcium petroleum sulfonate and 0.39wt% water into the reaction kettle, stir, heat up to 90-100°C, and stir at constant temperature for 35 minutes;

[0062] 2) Add 0.18wt% lauryl hydroxystearic acid and 0.09wt% calcium hydroxide (dilute with 3 times water to form a suspension when used), raise the temperature to 140-150°C, and stir at constant temperature for 35 minutes;

[0063] 3) Cool to 90-100°C, add 30wt% base oil and 4.72wt% lauryl hydroxystearic acid, and stir at consta...

Embodiment 3

[0074] A commercial vehicle hub bearing lubricating grease, comprising the following raw material components in parts by weight: 87.8% of base oil, 10% of composite thickener, 1.2% of composite adhesive, 0.5% of antioxidant, and 0.5% of extreme pressure and antiwear agent %, antirust agent 0.001%, wherein, composite polyurea thickener: composite calcium sulfonate thickener: composite lithium thickener=2:1:7.

[0075] The preparation method comprises the following steps:

[0076] 1) Add 0.77wt% overbased calcium petroleum sulfonate and 0.13wt% water into the reaction kettle, stir, heat up to 90-100°C, and stir at constant temperature for 35 minutes;

[0077] 2) Add 0.06wt% lauryl hydroxystearic acid and 0.03wt% calcium hydroxide (dilute with 3 times water to form a suspension when used), heat up to 140-150°C, and stir at constant temperature for 35 minutes;

[0078] 3) Cool to 90-100°C, add 30wt% base oil and 4.41wt% lauryl hydroxystearic acid, and stir at constant temperature...

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Abstract

The invention discloses commercial vehicle hub bearing lubricating grease and a preparation method thereof. The invention belongs to the technical field of commercial vehicle hub bearing lubricating grease. The invention aims to improve the high-temperature stability and colloid stability of the lubricating grease, to reduce the grease separation amount of the lubricating grease, to improve the extreme pressure property and the shearing resistance of the lubricating grease, and to reduce consistence changes and grease-water separation of the lubricating grease. A composite polyurea thickeningagent, a composite calcium sulfonate thickening agent and a composite lithium thickening agent are compounded through an integrated synthesis method, so that the high-temperature stability and colloidstability of the lubricating grease are obviously improved, the oil separation amount of the lubricating grease is reduced, the service lifetime of a high-temperature bearing is prolonged, the oil leakage risk of the lubricating grease is reduced, the extreme pressure property and shearing resistance of the lubricating grease are improved, the consistency change of the lubricating grease is reduced and the grease-water separation risk is reduced. A composition of a synthetic adhesive and a natural adhesive has a synergistic effect, the shear stability of the lubricating grease is obviously improved, the consistency change of the lubricating grease is reduced, the lubricating grease is well adhered to the surface of a friction pair, and the grease-water separation risk of the lubricating grease is reduced.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease for hub bearings of commercial vehicles. Background technique [0002] Bearings are divided into open bearings and closed bearings according to their sealing conditions. With the development of bearings towards unitization, the use of bearing units based on closed bearings has increased. The sealed bearing can be lubricated with lubricating oil, but the lubricating oil has higher requirements on the oil resistance of the seal, and the lubricating grease is still the main lubricating medium of the bearing. [0003] Commercial wheel bearings are divided into open paired bearings and closed bearing units. The closed bearing unit is usually lubricated with lubricating oil, which can realize the long life of the bearing without maintenance. Open paired bearings cannot be lubricated with lubricating oil. Lithium-based grease and lithium complex grease are usually used for lubricating. main...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M115/10C10M119/24C10M117/04C10M117/06C10M113/00C10N50/10C10N40/02C10N30/06C10N30/08
CPCC10M169/06C10M115/10C10M119/24C10M117/04C10M117/06C10M113/00C10M2203/1025C10M2219/0466C10M2207/1285C10M2217/0456C10M2207/1276C10M2201/0876C10M2209/08C10M2207/026C10M2223/045C10M2215/223C10N2030/06C10N2030/08C10N2030/68C10N2040/02C10N2050/10Y02T10/86
Inventor 许扬王彦冬闫瑾徐小鹏王清国桃春生汪玉瑄
Owner FAW JIEFANG AUTOMOTIVE CO
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