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Emerson Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@emersonbearing.com
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Needle Roller Bearings have a high load carrying capacity and can operate at high speeds. They have slim design and are suited where radial space is limited. They are available with or without an inner ring.

Needle roller bearings with inner rings are used if the shaft cannot be used as a raceway.
Needle Roller Bearings NA 4900 Single Row with Inner Ring
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Item #

(d) Bore Diameter

(D) Outside Diameter

(B) Width

(C) Dynamic Load

(Co) Static Load

Weight

NA4911 N/A 55 mm N/A 80.000 mm N/A 25 mm N/A 57200 N N/A 106000 N N/A 0.40 g
NA4912 N/A 60 mm N/A 85.000 mm N/A 25 mm N/A 60500 N N/A 114000 N N/A 0.43 g
NA4913 N/A 65.000 mm N/A 90 mm N/A 25 mm N/A 61600 N N/A 120000 N N/A 0.46 g
NA4914 N/A 70.000 mm N/A 100 mm N/A 30 mm N/A 84200 N N/A 163000 N N/A 0.73 g
NA4915 N/A 75.000 mm N/A 105 mm N/A 30 mm N/A 84200 N N/A 170000 N N/A 0.78 g
NA4916 N/A 80.000 mm N/A 110.000 mm N/A 30 mm N/A 88000 N N/A 183000 N N/A 0.88 g
NA4917 N/A 85.000 mm N/A 120 mm N/A 35 mm N/A 108000 N N/A 250000 N N/A 1.25 g
NA4918 N/A 90.000 mm N/A 125.000 mm N/A 35 mm N/A 112000 N N/A 265000 N N/A 1.30 g
NA4919 N/A 95.000 mm N/A 130.000 mm N/A 35 mm N/A 114000 N N/A 270000 N N/A 1.40 g
NA4920 N/A 100.000 mm N/A 140.000 mm N/A 40 mm N/A 125000 N N/A 280000 N N/A 1.90 g
NA4922 N/A 110.000 mm N/A 150.000 mm N/A 40 mm N/A 130000 N N/A 300000 N N/A 2.10 g
NA4924 N/A 120.000 mm N/A 165.000 mm N/A 45 mm N/A 176000 N N/A 405000 N N/A 2.85 g
NA4926 N/A 130 mm N/A 180.000 mm N/A 50 mm N/A 198000 N N/A 480000 N N/A 3.90 g
NA4928 N/A 140 mm N/A 190.000 mm N/A 50 mm N/A 205000 N N/A 510000 N N/A 4.15 g
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