What is the best grease for slow moving bearings?
Bearings operating at low speeds face a challenge in forming a lubricating film. We recommend our high base oil viscosity grease. Lubricating bearings with less than 1 RPM or with alternating motion such as in cranes and pitch bearings are even more challenging; Those applications require a grease with high solid content. Please contact us with the bearing number and the application type and we will recommend the right product for you.
Can you recommend a flushing oil for cleaning gearboxes and hydraulic systems?
The traditional flushing process can be time consuming and affect the viscosity of new oil. In most cases, it does not achieve the goal of cleaning. A more modern system cleaner can be mixed into the oil to remove sludge, carbon, and varnish in the oil system. All these residues drain out with the oil change. Ask our technical support to guide you through the process.
How do you calculate the amount of grease required for bearing lubrication?
There is a chart by the bearing manufacturers that determines the quantity of grease needed for the first fill based on the bearing number, bore size, and RPM. Additionally, a simple formula based on the bearing size is used to calculate the amount of grease required for relubrication. It is more difficult to determine the relubrication period than the amount of grease, since the bearings are affected by the operating conditions, contamination and type of lubricant. We can work with you to determine the right grease type, amount, and period for lubrication.
What lubricant used in open gears allows for a gear inspection?
Open gear inspections of kilns and mills in operation are difficult when using black lubricants with asphalt or with solids. But it’s possible to clean the gears without stopping production. It can be done with our special open gear cleaner in less than an hour. Clean gears can be inspected with a strobe light or by stopping for one minute to take a replica imprint of the tooth flank. We can also provide this service. Clear open gear lubricants make the gear inspection easier; however they lack the load carrying capacity of lubricants with solids. Let us know your goals and we will guide you to the best practices for open gear inspection.
To avoid sending so many oil samples to the lab, is there any fast oil test we can do here?
Periodic oil condition tests are a good practice for preventive maintenance and monitoring. However, many plants don’t consistently sample test because of costs. Evaluating the test results is also a challenge. There is a way to simplify oil monitoring by testing one drop of oil on a special membrane. In a few hours, the Fluid Check-Up test can reveal the general oil condition. Uncertain samples can then be sent to the lab. Ask us for the right fast oil analysis test according your oil type.
What can we do to reduce or avoid periodic damage in gears and bearings?
There are surface treatment products you can apply to dramatically reduce the damage of lubricated parts. We recommend Rewitec. Rewitec can be applied while equipment is in operation. It smoothes surfaces and damage that might have already started and protects the metal with a wear resistant layer. There is more information at www.rewitec.us
Would you recommend cleaning hot chains during operation?
High temperature cleaners can be applied on hot chains during operation to soften and release carbon, residues, and varnishes that might have formed on them. This procedure is fast and helps keep up your production schedule. It also avoids the costly and time consuming disassembly required for cleaning.
What is the right lube viscosity for chains?
Chain lubricants should penetrate between the bushing and pin to lubricate. According to the environment under which they operate, chains require a different lubricant viscosity. If they are operating indoors and in a production area, a medium viscosity oil is best for the task and for external protection, even at high temperatures. If the environment is dusty or loaded with pollutants, a very low viscosity is ideal for chain lubrication and to keep the chain clean. On the other hand, in a moist environment or one with water contamination, a high viscosity lubricant is best for protecting chains from corrosion and to prevent water from getting into the bushing. We will be glad to recommend the right product for your application.
How can we filter our oil sump to keep the oil clean?
Some gearboxes, hydraulic tanks, and other oil sumps don’t have proper filtration or require additional filtration. We recommend magnetic filter rods for cleaning those fluids. Magnetic filter rods are currently used by renowned manufacturers as a complement to the traditional media filters. Magnetic filters not only separate out metal particles but also many other contaminants and aging products from the fluids. Please describe your filtration challenge so we can recommend the right magnetic filter device.
If we switch to a synthetic oil, how much longer can we extend the oil drain interval?
Synthetic oils offer advantages over mineral oils. With synthetic oils, a higher operating temperature allows for longer oil change intervals. However, the life of the lubricant is often related to external contamination. The life span of the oil, even if synthetic, is limited by contamination. Please, ask our tech support how long can you extend the drain interval for your specific case with our synthetic lubricants.
How do I select the right lubricating grease for my equipment?
Grease selection depends on the conditions of the application such as load, speed, contamination (water, dust, pollution), maintenance condition (vibration, noise, age, sealing), and even design (open, for-life-lubricated, not accessible, automated lubrication.) Grease selection is more detailed than oil selection. -Start by selecting the type of oil and thickener depending on load, temperature, and application design; -Next choose the base oil viscosity, the higher the speed, the lower the viscosity and vice versa; - Then select the additives required for load and contamination, the higher the load, the higher grade additives required; - Lastly, select the consistency depending how the lubrication is performed. You will find many conflicting conditions in making a selection. For example, in a high speed and water contamination condition, one will require a low viscosity base oil and the other a high viscosity base oil. Our engineers are trained to help you with these decisions. Contact us with your questions.
What is the right oil viscosity grade for a gearbox?
Initially, the gearbox manufacturer should have made a recommendation. However, if the gearbox is in an application not intended by the OEM, the right viscosity can be calculated as the inverse of the √speed. In cases where the gearbox has many reduction wheels, there should be a compromise between the fast and the slow wheel calculation. Wear in gears doesn’t mean that they require higher viscosity; it means that they require a higher quality lubricant. If you increase viscosity, the internal oil friction increases and generates additional heat. Talk to us to find the right solution.
What high temperature grease is right for hot bearings?
Modern lubricating greases resist higher temperatures based on the improvements in thickening technology and innovative synthetic fluids. The question is not what temperature the grease resists, but for how long! Since the relubrication interval directly affects your costs, it should be an important factor in grease selection. High temperature greases today are composed of synthetic ester oils and bentone, calcium, or polyurea thickeners. Even higher temperatures are resisted by greases based on perfluorinated ether PFPE and Polyphenyl ether PPE, temperatures up to around 300°C (~600°F) . Above that, greases with high solids content can lubricate slow movements up to 2,200°F. We offer all these options in our shop, so contact us and we will guide you to the right grease.
Didn’t find the answer?
We will gladly answer your questions about the best practices for lubrication and for optimizing lubricant application in your equipment.