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.
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Item #

(d) Bore Diameter

(D) Outside Diameter

(C) Width

(C) Dynamic Load

(Co) Static Load

Weight

NKI 5/12 TN N/A 5 mm N/A 15 mm N/A 12 mm N/A 3800 N N/A 4250 N N/A 0.01 g
NKI 5/16 TN N/A 5 mm N/A 15 mm N/A 16 mm N/A 5010 N N/A 5850 N N/A 0.02 g
NKI 6/12 TN N/A 6 mm N/A 16 mm N/A 12 mm N/A 4400 N N/A 5200 N N/A 0.01 g
NKI 6/16 TN N/A 6 mm N/A 16 mm N/A 16 mm N/A 5720 N N/A 7200 N N/A 0.02 g
NKI 7/12 TN N/A 7 mm N/A 17 mm N/A 12 mm N/A 4570 N N/A 5700 N N/A 0.01 g
NKI 7/16 TN N/A 7 mm N/A 17 mm N/A 16 mm N/A 5940 N N/A 8000 N N/A 0.02 g
NKI 9/12 N/A 9 mm N/A 19 mm N/A 12 mm N/A 6710 N N/A 8150 N N/A 0.02 g
NKI 9/16 N/A 9 mm N/A 19 mm N/A 16 mm N/A 9130 N N/A 12000 N N/A 0.02 g
NKI 10/16 N/A 10 mm N/A 22 mm N/A 16 mm N/A 10200 N N/A 12500 N N/A 0.03 g
NKI 10/20 N/A 10 mm N/A 22 mm N/A 20 mm N/A 12800 N N/A 16600 N N/A 0.04 g
NKI 12/16 N/A 12 mm N/A 24 mm N/A 16 mm N/A 11700 N N/A 15300 N N/A 0.03 g
NKI 12/20 N/A 12 mm N/A 24 mm N/A 20 mm N/A 14500 N N/A 20000 N N/A 0.04 g
NKI 15/16 N/A 15 mm N/A 27 mm N/A 16 mm N/A 13400 N N/A 19000 N N/A 0.04 g
NKI 15/20 N/A 15 mm N/A 27 mm N/A 20 mm N/A 16500 N N/A 25500 N N/A 0.05 g
NKI 17/16 N/A 17 mm N/A 29 mm N/A 16 mm N/A 13800 N N/A 20400 N N/A 0.04 g
NKI 17/20 N/A 17 mm N/A 29 mm N/A 20 mm N/A 17200 N N/A 27000 N N/A 0.05 g
NKI 20/16 N/A 20 mm N/A 32 mm N/A 16 mm N/A 15400 N N/A 24500 N N/A 0.05 g
NKI 20/20 N/A 20 mm N/A 32 mm N/A 20 mm N/A 19000 N N/A 32500 N N/A 0.06 g
NKI 22/16 N/A 22.000 mm N/A 34 mm N/A 16 mm N/A 15700 N N/A 26000 N N/A 0.05 g
NKI 22/20 N/A 22.000 mm N/A 34 mm N/A 20 mm N/A 19400 N N/A 34500 N N/A 0.07 g
NKI 25/20 N/A 25 mm N/A 38 mm N/A 20 mm N/A 22000 N N/A 36500 N N/A 0.08 g
NKI 25/30 N/A 25 mm N/A 38 mm N/A 30 mm N/A 31900 N N/A 60000 N N/A 0.12 g
NKI 28/20 N/A 28.000 mm N/A 42.000 mm N/A 20 mm N/A 23300 N N/A 40500 N N/A 0.10 g
NKI 28/30 N/A 28.000 mm N/A 42.000 mm N/A 30 mm N/A 34100 N N/A 65500 N N/A 0.15 g
NKI 30/20 N/A 30 mm N/A 45 mm N/A 20 mm N/A 24600 N N/A 45000 N N/A 0.11 g
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