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High Temperature Bearing Grease with WS2
MK-WS2-HT is a high temperature bearing grease for industrial bearings and lubrication points exposed to elevated temperature, high load, impact load, moisture or high shear. It is made with high-viscosity synthetic base oil, tungsten disulfide (WS2) particles and special additives.
Lowerfriction supplies MK-WS2-HT high temp grease in NLGI grades 0, 1 and 2 and in cartridge, jar, pail and drum packaging. The product brochure reports a dropping point above 320 °C, low oil separation, low evaporation loss and resistance to water, rust and humid environments.
Product availability: NLGI grades 0, 1 and 2 are included in the brochure, with packaging from a 400 g cartridge to a 170 kg drum. Verify the current grade, stock, packing, pricing and product documents before purchase.
MK-WS2-HT product overview
Specification note: The brochure specifies a synthetic high-viscosity base oil, whereas the SDS lists both mineral oil and polyalphaolefin as constituents. Do not describe MK-WS2-HT as fully synthetic unless the current technical documentation states this.
Available pack sizes
| Product | SKU | NLGI grade | Packaging | Purchase |
|---|---|---|---|---|
| MK-WS2-HT High Temperature Bearing Grease with WS2 | MK-WS2-HT | 0, 1 and 2 | 400 g Cartridge | View Product |
| MK-WS2-HT High Temperature Bearing Grease with WS2 | MK-WS2-HT | 0, 1 and 2 | 1 kg Jar | View Product |
| MK-WS2-HT High Temperature Bearing Grease with WS2 | MK-WS2-HT | 0, 1 and 2 | 18 kg Pail | View Product |
Technical specifications
| Test / property | Typical data | Test method |
|---|---|---|
| Cone penetration (NLGI class) | 0, 1 and 2 | ASTM D217 / GB/T269 |
| Penetration (0.1 mm) | 310–340 / 259–265 / 220–250 | ASTM D217 / GB/T269 |
| Dropping point | >320 °C | ASTM D2265 / GB/T3498 |
| Oil separation on steel net (100 °C, 24 h) | <0.3% | ASTM D1742-94 / SH/T0324 |
| Copper corrosion (100 °C, 24 h) | No colour change | ASTM D4048 / GB/T7326(II) |
| Evaporation loss (150 °C, 22 h) | <0.4% | ASTM D972-02 / SH/T0337 |
| Water washout (38 °C, 1 h) | <3.5% | ASTM D1264 / SH/T0109 |
| Coefficient of friction | 0.015 | Brochure-listed value |
| Free alkali, NaOH | <0.05% | SH/T0329 |
Performance note: The brochure lists a temperature range of -20 °C (-4 °F) to 800 °C (1472 °F). Confirm suitability for continuous or intermittent service in the actual equipment. The 300,000 psi figure applies to WS2 as a material and is not a certified load rating for the finished grease.
Selection factors for bearings
| Selection factor | MK-WS2-HT selection consideration |
|---|---|
| Operating temperature | Select based on the actual equipment temperature, duty cycle and operating conditions. The brochure lists a dropping point above 320 °C. |
| Load requirement | Consider high load and impact load applications. Validate equipment load requirements before selection. |
| Speed | Confirm grease consistency and equipment speed requirements before choosing the NLGI grade. |
| Water / humidity exposure | Review water resistance, washout performance and maintenance frequency for exposed lubrication points. |
| NLGI grade | Available NLGI grades: 0, 1 and 2. Select according to the lubrication system and equipment specification. |
| Relubrication requirement | Set the relubrication interval based on temperature, load, environment and operating conditions. |
Industrial applications of high temp bearing grease
| Application / requirement | How MK-WS2-HT is used | Selection note |
|---|---|---|
| Industrial bearings | For elevated temperature, load and friction. | Confirm grade and equipment requirements. |
| High or impact loads | EP and abrasion resistance support severe-duty contact. | Validate load and relubrication interval. |
| Water or humidity | Water, rust and humidity resistance supports exposed lubrication points. | Review washout and maintenance frequency. |
| High shear | Mechanical stability supports repeated shear conditions. | Confirm consistency and compatibility. |
Choosing an NLGI grade
The brochure gives NLGI 0 at 310–340, NLGI 1 at 259–265 and NLGI 2 at 220–250 penetration (0.1 mm). Select the grade on the equipment specification, lubrication system and application method, not on the temperature claim alone.
Need help selecting a high temperature grease? Send Lowerfriction the NLGI grade, temperature, load, moisture exposure, application method and quantity for product and purchasing guidance.
Packaging, storage and handling
| Item | Supplied information |
|---|---|
| Documented packaging | 400 g cartridge; 1 kg jar; 18 kg pail; 170 kg drum. Check availability. |
| Storage | Store in authorized containers in a cool, dry, well-ventilated place away from heat and sources of ignition, firmly closed. |
| Incompatible materials | Avoid contact with acids or strong oxidizers. |
| Handling and PPE | Avoid skin and eye contact. Use suitable gloves and eye or face protection. |
| Environmental precautions | Avoid release to the environment and collect spillage. |
| Transport | Based on the supplied SDS, the product is not regulated under DOT/TDG, IMDG and ICAO/IATA transportation regulations. |
| Shelf life / MOQ | Not provided in the supplied documents. |
Safety note: The SDS uses the signal word Danger and lists skin irritation, serious eye damage and long-term aquatic hazard. Review the latest SDS before use. The supplied revision is dated July 5, 2020.
Product documents
| Document | Download |
|---|---|
| Product Brochure | Download MK-WS2-HT High Temperature Grease Brochure (PDF) |
| Safety Data Sheet | Download MK-WS2-HT Safety Data Sheet (PDF) |
Frequently asked questions
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What is high temperature grease used for?
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Which NLGI grades are available for MK-WS2-HT?
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What is the listed temperature range?
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Is MK-WS2-HT a fully synthetic grease?
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What packaging is available for bulk orders?
Buy high temperature grease or request a quote
Order or request a quote: Select the required MK-WS2-HT product from the category page, or contact Lowerfriction to confirm current pricing, NLGI grade, packaging, bulk quantity, technical documents and purchasing support.
Technical information notice: Product information is for preliminary evaluation only and does not guarantee performance or suitability. Review the current SDS, TDS, and product specifications, try a small sample first, and confirm suitability before bulk use. Read the full disclaimer