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Recent News

+Where are national bearings made?

What you need to know, If you are buying Chinese bearingsJan 25, 2018 — I have personally made over 500 visits to Chinese bearing factories over the past 22 years and it is astonishing...  Read More

+When testing for loose wheel bearings you should?

Wheel Bearing Warning Signs & Symptoms | Auto Repair BlogMay 14, 2019 — How will you know when it's time for a wheel bearing replacement or at Another revealing sign of bad wheel...  Read More

+What is reliability of bearing?

Calculation of service life | Basic Bearing Knowledge | KoyoThe term "reliability" is defined as "for a group of apparently identical rolling bearings, operating under the same...  Read More

+What is reliability of bearing?

Calculation of service life | Basic Bearing Knowledge | KoyoThe term "reliability" is defined as "for a group of apparently identical rolling bearings, operating under the same...  Read More

+What is 2rs bearing?

6001-2RS Dunlop Sealed Ball Bearing 12mm x 28mm x 8mm6001-2RS Dunlop Sealed Ball Bearing 12mm x 28mm x 8mm (Dunlop Ball Bearings) at BearingBoys - £1.62 exc VAT. Brand: Dunlop, Inside...  Read More

+What can I use to polish a crankshaft?

Polish crankshaft journals - Technical Discussions - TireRackI can see mirror reflections but if I look really close I can see some "scratches". It's not a perfect mirror finish....  Read More

FAQS

QWhat is a double row bearing?

ADouble Row. Two-row, or double-row, cylindrical bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard.

QWhat is a single row deep groove ball bearing?

ASingle-row deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread. In addition to open type bearings, these bearings often have steel shields or rubber seals installed on one or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery.

QWhat sizes are ball bearings?

AThe specification limits under which the ball bearing can operate are 0.74 inch (lower) and 0.76 inch (upper). Past experience has indicated that the actual diameter of the ball bearings is approximately normally distributed with a mean of 0.753 inch and a standard deviation of 0.004 inch.

QWhat is a double row angular contact bearing?

ADouble row bearings are angular contact designed to meet the demand of increased axial and radial load where the application design limits the operating space. Being slightly wider than the 6200 and 6300 series, double row bearings are capable of loads where the single row bearing is inadequate.