BMI is proud to offer an online edition of the Industrial catalogue for users engaged in designing, development and purchasing of bearings. The catalogue provides an overview of the entire range of bearings that BMI is able to offer. Beside the standard catalogue bearings BMI also regularly manufacturing obsolete and nonstandard bearings from samples by reverse engineering as well.
The catalogue covers the entire range of Inch taper and special taper roller bearings as well for the American market. Given the wide variety of bearing sizes used in the industrial market. BMI will constantly try to update the range.
However if you are unable to find any size in the catalogue feel free to contact our team and we will be happy to help you.
BMI is now able to offer the entire range of sealed spherical roller bearings starting from BS2-2206- 2CS in regular production. The design is similar to European standard with similar load carrying capacity. Lithium complex EP grease from SKF (LGWA 2/1) grease is used for higher than normal life expectancy of the bearing.
The quality of seals used along with the super finishing of raceways provide higher life.
Lithium complex EP grease from SKF (LGWA 2/1) grease is used for higher than normal life expectancy of the bearing. Downsizing is possible.
BMI sealed spherical roller bearings are designed to high load, mis-alignment, contaminants and more. Sealed spherical enhance service life of bearings by keeping solid contaminants and moisture of the bearing.
From designers’ perspective downsizing is possible as service life is higher. Application: for continuous casting plant conveyor belts, food industry.
MAINTENANCE TIPS: Bearing Heating
Heating is a standard method for mounting medium to large-sized bearings onto a shaft (smaller bearings are typically pressed on cold). This process must be performed carefully using one of the following three approved methods:
Induction Bearing Heaters
Electric Ovens
Hot Oil Baths
Critical Considerations:
Temperature Control: Accurate temperature control is essential to prevent bearing damage. Exceeding 250 degrees Fahrenheit (approx. 121°C) risks altering the bearing’s metallurgical grain structure, leading to a loss of hardness and reduced wear life.
Sealed Bearings Warning: Sealed or shielded bearings must never be heated and should only be mounted cold, as heat will damage the seal material.
Prohibited Method:Never apply an open flame (e.g., a torch) directly to a bearing. Flame temperatures far exceed safe limits, and this practice almost guarantees premature bearing failure.
BMI’s engineering team was approached by a European customer with a requirement for a special full-complement CRB (with self-holding rollers). With a total weight of around 9 kg and an outer diameter of 170 mm, the bearing features an offset track and special spring seals for a contaminated working environment. The bearing, intended for a steel mill application, was to be used in harsh conditions.
Special full-complement CRB (with self-holding rollers) with an offset track and special spring seals for contaminated working environments.
After preliminary analysis, engineering confirmed the possibility of developing the bearing for the customer. BMI then developed the entire design of components and manufacturing process based on the application. Engineering suggested a radius of 3500 mm (for line contact) on the outer diameter of the outer ring after evaluating the application in detail.
BMI’s production team proceeded with the manufacturing and development of the special bearing. Within 12 weeks, production was able to hand over the finished product, including development time for tooling. After successful testing of 8 pieces, BMI is now engaged in the development of 3 more special bearings for the European customer.
MAINTENANCE TIPS: Alignment
Correct alignment of all devices in contact with the bearing shaft cannot be overemphasized. All components of the shaft must work together in correct alignment to prevent damage. A misaligned motor shaft will eventually cause abnormal wear of the bearing, leading to even greater misalignment. This can be an even greater hazard if a driving gear set is attached to the shaft—not only can this misalignment be transferred to the gears, but it may also go on to cause bearing damage and misalignment in the driven components.
Along the same lines, a soft foot within a large bearing housing or pillow block can cause uneven bearing wear. Prior to aligning a unit, a soft foot check should be performed on the bearing housing. This check must be completed to guarantee the proper reaction of any realignment shim changes that will be made.
Combined bearings represent a special range both for dimensions and technical features.
They are used both for big size fork lift masts and for different industrial applications in the following fields: ship, aircraft, steel industry.
High load capacity and a limited width represent the fundamental features of this bearing.
Technical Characteristics
Outer ring, axial little roll and little pin are manufacture in 16CrNi4 steel . This kind of material has a very high core resistance and is particularly suitable to endure shocks and to support the applied loads. These components reach a hardness of 60-2 HRC.
The inner ring is manufactured in 100Cr6 steel with hardness 60+2 HRC. They are normally supplied with seals in ZZ execution. They can also be supplied in 2RS execution on request. Combined bearings are provided with a lubrication system of the radial part.
Also the thrust ring is manufactured in cementation steel.
The central pivot is manufactured in 16CrNi4 steel which guarantees the maximum resistance to fatigue and a good welding.
We understand what the heavy truck industry demands from their bearings and provide quality bearings that keep fleet operating more cost effectively.
BMI offers the entire range of matched inner & outer wheel end application bearings in single box. Sets are now available for the most popular heavy duty truck sixes of tapered roller bearings.
