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LHHT 250 High-Temperature Chain Oil

Model LHHT 250 / LHMT 68/LHHT 250 / SKF (Official website) / Listed on page 164 of the document

Ester-based high-temperature, high-load chain oil. Usable up to 250°C with minimal residue formation.

Last verified: (date the content was verified against the source document)

LHHT 250 High-Temperature Chain Oil on page 164 of SKF "SKFメンテナンス製品と潤滑製品"
Source: SKF「SKFメンテナンス製品と潤滑製品」page 164
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Specifications

Operating Temperature Range Max. 250 °C
Flash Point >250 °C
Pour Point ≤-40 °C
Kinematic viscosity (40°C) Approx. 250 mm2/s
Kinematic viscosity (100°C) Approx. 24 mm2/s
Density (20°C) 0.94 g/cm3
Storage Period 5 年

LHMT 68/LHHT 250 model comparison

Compare 2 models in the same series by specification.

Model Kinematic viscosity (40°C) Kinematic viscosity (100°C) Operating Temperature Range Flash Point Pour Point Density (20°C) Storage Period
LHHT 250 This product Approx. 250 mm2/s Approx. 24 mm2/s Max. 250 °C >250 °C ≤-40 °C 0.94 g/cm3 5 年
LHMT 68 ISO VG 68 Approx. 9 mm2/s -20～+100 °C >200 °C <-30 °C 0.88 g/cm3 5 年

How to choose Lubricating oils

Points to check when selecting, with the values for this product (LHHT 250).

  1. 1. Match the viscosity grade to the machine specification

    ISO VG is a viscosity grade classified by the midpoint kinematic viscosity at 40°C, such as VG 68, 100 and 220. If the viscosity is too low, oil film breakdown causes wear; if it is too high, penetration is insufficient and power loss increases. First confirm the grade specified by the machine manufacturer, and choose a higher grade for high loads.

  2. 2. Also check viscosity at high temperature

    This product: Kinematic viscosity (100°C) Approx. 24 mm2/s

    Oil viscosity decreases as temperature rises, so check the kinematic viscosity at 100°C as well as at 40°C. Listed products range from 9 to 25 mm2/s. For applications at high temperature, such as in-oven chains, selecting a product that retains sufficient viscosity at high temperature helps maintain the oil film.

  3. 3. Confirm the operating temperature range suits the environment

    This product: Operating Temperature Range Max. 250 °C

    Products are rated for different temperature conditions, such as high-temperature, medium-temperature and low-temperature environments. Check not only the maximum temperature but also the minimum temperature for startup in freezers or cold regions. At high temperatures, evaporation and sludge formation are issues, while at low temperatures, reduced fluidity becomes a problem.

  4. 4. Select a base oil suited to the application

    Mineral oils are general-purpose and easy to handle, PAO offers low-temperature fluidity and oxidation stability, and esters offer low evaporation at high temperature and minimal residue. Listed examples differentiate use as follows: mineral oil for medium temperature, ester-based for high temperature, and PAO-based for low-temperature or humid environments.

  5. 5. Check the pour point at low temperature

    This product: Pour Point ≤-40 °C

    The pour point is a guide to the lowest temperature at which oil remains fluid. Listed products range from -50 to -30°C. In freezing and refrigeration equipment or outdoor cold environments, selecting a product with a pour point well below the minimum operating temperature prevents lubrication failure at startup.

  6. 6. Verify certifications for food and pharmaceutical plants

    Production lines in food and pharmaceutical manufacturing may require NSF H1-registered lubricants, which permit incidental food contact. Silicone-free products may also be specified near painting processes. Confirm the certifications and labeling match the plant's hygiene standards and process constraints.

This guide was written by AI based on the listed products' documents and specification items.

About Lubricating oils and all products

Description

A synthetic amber-colored oil formulated for chain lubrication under high temperature and high load. Resists lacquer and residue formation even at high temperatures, with excellent oxidation stability. Silicone-free.

Features

  • High temperature and high load
  • Excellent wear resistance
  • Excellent oxidation stability
  • Silicone-free

Applications

  • Chains under high temperature and high load
  • Ovens

FAQ

Q. For which high-temperature, high-load chains can LHHT 250 High-Temperature Chain Oil be used?
A. It can be used on chains under high temperature and high load, and in ovens. The maximum operating temperature range is 250 °C.
Q. Does LHHT 250 High-Temperature Chain Oil resist residue and lacquer formation at high temperatures?
A. Yes. It resists lacquer and residue formation even at high temperatures and has excellent oxidation stability.
Q. Does LHHT 250 High-Temperature Chain Oil contain silicone?
A. No, it is silicone-free.
Q. What are the flash point, pour point, and density of LHHT 250 High-Temperature Chain Oil?
A. The flash point is >250 °C, the pour point is ≤-40 °C, and the density at 20°C is 0.94 g/cm3.
Q. What are the kinematic viscosity and shelf life of LHHT 250 High-Temperature Chain Oil?
A. The kinematic viscosity is approximately 250 mm2/s at 40°C and approximately 24 mm2/s at 100°C. The shelf life is 5 years.

Written by AI based on the content of the source documents.

Source documents

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