RKB Bearings Continue to Lead the Industry

Nathan Brimmer

Introduction to RKB Bearing Industries Group

Established in 1936, the RKB Bearing Industries Group stands tall as a stalwart in Europe's bearing manufacturing sector. Over the decades, RKB has honed its craft, now boasting an impressive monthly production capacity exceeding 350 tons of meticulously machined steel. Such robust production capabilities are indicative of RKB's unwavering commitment to excellence.

With a rich reservoir of experience, RKB leverages its expertise to craft industrial bearings of unparalleled quality, boasting outer diameters reaching up to an impressive 1925 mm. This mastery over precision engineering has solidified RKB's position as a leading player in the global bearings market.

What sets RKB apart is not merely its manufacturing prowess but also its steadfast dedication to customer satisfaction. RKB's ethos revolves around delivering reliable and cost-effective solutions tailored to meet the unique needs of its clientele. This commitment is evident through a myriad of avenues, including the integration of cutting-edge technology, operational flexibility, and a seamless service experience.

Moreover, RKB takes pride in its extensive stock availability and short delivery times, ensuring that customers receive their orders promptly, no matter where they are located. The company's global footprint is further bolstered by a vast distribution network spanning over 50 countries, facilitating easy access to its premium class bearings worldwide.

Revered as "The Alternative Power" in the bearing industry, RKB is synonymous with unmatched quality and performance. This reputation is not merely earned but meticulously maintained through rigorous quality control measures and a relentless pursuit of innovation.

Furthermore, RKB recognizes the importance of accessibility, offering customers the convenience of sourcing specific bearings that may not be readily available in their inventory. A simple inquiry is all it takes for RKB to mobilize its resources and procure the desired product, ensuring that customer needs are met comprehensively.

For customers in North America, finding RKB Bearings is a breeze with Big Rock Mountain. Offering same-day shipping on most products across the US and Canada, Big Rock Mountain serves as the gateway to RKB's premium offerings, further enhancing accessibility and convenience for customers across the continent.

In essence, RKB Bearing Industries Group stands as a beacon of excellence in the realm of industrial bearings, driven by a relentless pursuit of quality, innovation, and customer satisfaction. With RKB, precision meets performance, setting new benchmarks in the ever-evolving landscape of bearing manufacturing.

Check out Big Rock Mountain's complete RKB Bearings line on sale here.

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Bearings - Proper Care & Pinpointing Failure

Nate Brim

A little effort goes a long way, and that's just as true for bearings inspection and maintenance as it is for anything else worth doing. Here are a couple of notes to keep in mind when you're reviewing the wear on your bearings, as well as simple storage reminders.

The following content has been selected from Big Rock Mountain partner SKF:

Rolling bearing defect frequency analysis

Every bearing generates a low frequency signal. Every time a bearing defect is over-rolled, a high frequency signal is generated, which causes a peak in the amplitude of the signal. The rate of these peaks is a function of speed as well as the position of the defect on the bearing and the internal geometry of the bearing.

To monitor the condition of a bearing, a technique called enveloped acceleration or enveloping is used. Enveloping isolates the high frequency signal generated by the defect from other naturally occurring rotational or structural frequencies in the machine. In cases where it is difficult or time consuming to gain access to the bearings for inspection, an Endoscope can be a valuable tool. An endoscope, available on Big Rock Mountain soon in the field, is a good tool. It should have a small diameter insertion tube, an LCD display and a picture recording function.


Storage time is the period that a bearing can remain in storage in order to avoid adverse effects on operational performance of the bearing. Bearings are coated with a high-quality preservative oil to protect them from corrosion. Long storage times can be attained by storing bearings in their original, unopened and undamaged, packaging. The storage time of bearings also depends on their storage environment conditions. To maintain the potential operating performance of a bearing, it is recommended that  a "first in, first out" inventory policy be developed.

Storage time for open bearings

Typical storage times for open (unsealed) and not lubricated bearings are listed in table 1:

table 1 - Storage time for open (unsealed) and not lubricated bearings


Storage environment conditions

Storage time

Relative air humidity

Ambient temperature






20 to 25

70 to 75



20 to 25

70 to 75



35 to 40

95 to 105


Uncontrolled tropical conditions1)



Storage time for capped bearings

Capped bearings (bearings with seals or shields) should be stored for a maximum of three years to avoid deterioration of their grease fill.

Additional storage-related factors

To avoid deterioration of your bearings while in storage, consider these factors:

  • Store indoors, in a frost- and condensation-free environment, at a maximum ambient temperature of 40 °C (105 °F), avoiding air flow.
  • Store in vibration-free conditions. Vibration can cause damage to raceways.
  • Store horizontally, preferably, to avoid damage that could be caused by the bearing falling over.
  • Do not open or damage the original packaging.

If you're unsure about whether or not your bearings merely require cleaning and relubrication, if they're misaligned or damaged and in need of replacement, you can always contact our team at sales@bigrockmountain.com at your convenience. 

Find the right bearings by clicking here.

Big Rock Mountain's line of lubricants and cleaning products to service bearings can be found here.


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