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Constant Level Oilers

Constant Level Oilers are designed to maintain a predetermined oil level in a sump. When the oil level drops below the predetermined level required to maintain proper system lubrication, the oiler automatically replenishes the sump, returning it to its original level. Using constant level oilers can increase maintenance efficiencies and minimize maintenance costs and lost production time.

Most constant level oilers are adjustable, allowing use in many applications. They are typically mounted on the side of the equipment, facing the direction of shaft rotation; although, some may be mounted on the bottom on the oil sump. This prevents the oiler from misfeeding in applications that contain currents and turbulence formed by slinger rings, discs, and high rotating speeds.

In most cases, constant level oilers are vented. As a result, especially in harsh, dirty environments, contaminants may enter the lubricating oil as moisture and/or particulates. In such cases, Closed System Oilers can be used to minimize or eliminate the ingression of contaminants into the oil sump. Some closed system oilers contain a pressure balancing line, which is connected from the headspace of the oil sump to an air chamber built into the surge body of the oiler. This air chamber is sealed from the outside atmosphere to prevent the ingression of contaminants. Closed System Oilers are also available that mount directly on the centerline of the oil level to be maintained. The exchange of air between the oil sump and the oiler occurs at the oiler’s base, which is mounted directly to the oil sump.

Contact us to learn more about all the lubrication systems solutions available through U.S. Lubricants.

Opto-Matic Oilers provide an inexpensive method to automatically maintain a constant oil level in a pump bearing housing, gear box, or other oil sump application. Opto-Matic Oilers are heavily used in processing industries. They are available with various reservoir capacities, and in stainless steel models. They provide long life in corrosive environments in the chemical, pulp and paper, and mining industries. “LS”, “EH”, and “EHB” models have a large surge chamber to minimize potential of leakage during oil surge conditions.

Breather Tubes are used to vent Opto-Matic® Oilers and help eliminate vacuums created by abnormally tight bearings or pressures created by high speed bearings. The breather tube helps maintain a constant atmospheric pressure in the bearing housing and is ideal in environments that contain minimal contaminants. Where contamination is a concern, our desiccant breathers can be used to remove contaminants and allow the equipment to breathe.

Closed System Oilers are designed to assure a constant level in an oil sump as well as prevent contamination and spillage. The adjustable collar allows the oil level to be externally adjusted to the desired level and to be used in a wide range of applications. Compared to competitive alternatives, the single-piece glass reservoir prevents any air leakage that would cause the housing to overfill. Side and bottom connections make it simple to install and a 1/8 NPT port is provided for a vent line back to the housing to allow pressure balancing between the oiler and the housing.

Zinc plated and stainless steel wire guards as well as replacement glass reservoir assemblies are available for Opto-Matic® oilers. See Constant Level Oilers - Specifications, Options, Selection Charts.

Color-code any Constant Level Oiler to match lubricant dispensing containers to avoid cross-contamination and misapplication of lubricants.

Watchdog® Closed System Oilers are designed for bearing housings, gear boxes, and other oil sump applications. They are ideal for use in the chemical processing, power generation, pulp and paper, and utility industries. The closed system design prevents contamination and spillage while the integrated viewport provides visual indication of lubricant level and condition. Mounted on the centerline of the desired oil level, these constant level oilers do not require a vent line to the pump bearing housing and do not require any adjustment or level setting making them both easy to install and easy to use.

Use the Opto Laser Level to quickly, easily and precisely install any Opto-Matic® constant level oilers with minimum downtime. It’s a lightweight, portable, easy to use, and easy to read tool that takes the guesswork out with laser level alignment and visual level indicators.

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