WD Bearing Group
WD Bearings America LLC
5845 W 82nd Street, Suite 102,
Indianapolis, IN 46278.
Tel: +1 317 661 3293
Email: Contact@wd-bearing.com
WD Waelzlager GmBH
Ost Strasse 74A 40724,
Hilden, Germany
Tel: +49 2103 968 6352
Email: Contact@wd-bearing.com
WD Bearing Group
No. 100, Zhenyang Road,
Jiangyin, Wuxi, P.R China, 214401
Tel: 0510-8655 7067
Fax: 0510-8655 7065
Email: Contact@wd-bearing.com
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Heavy-Duty-Needle-Roller-Bearings-With-Inner-Ring---NA-Series---3D
Unit of Measure
1 2 3 4 

Item #

Bore Diameter

Outside Diameter

Dimension C

Dynamic (Cr) Basic Load Rating

CAD

NKI25/20 N/A 25 mm N/A 38 mm N/A 20 mm N/A 21900 N N/A
NKI25/30 N/A 25 mm N/A 38 mm N/A 30 mm N/A 31500 N N/A
NKIS25 N/A 25 mm N/A 47 mm N/A 22 mm N/A 32000 N N/A
NA49/28 N/A 28 mm N/A 45 mm N/A 17 mm N/A 27500 N N/A
NA69/28 N/A 28 mm N/A 45 mm N/A 30 mm N/A 45500 N N/A
NKI28/20 N/A 28 mm N/A 42 mm N/A 20 mm N/A 23000 N N/A
NA4906 N/A 30 mm N/A 47 mm N/A 17 mm N/A 28500 N N/A
NA6906 N/A 30 mm N/A 47 mm N/A 30 mm N/A 49000 N N/A
NKI30/20 N/A 30 mm N/A 45 mm N/A 20 mm N/A 24000 N N/A
NKI30/30 N/A 30 mm N/A 45 mm N/A 30 mm N/A 36500 N N/A
NA49/32 N/A 32 mm N/A 52 mm N/A 20 mm N/A 34500 N N/A
NA69/32 N/A 32 mm N/A 52 mm N/A 36 mm N/A 53000 N N/A
NKI32/20 N/A 32 mm N/A 47 mm N/A 20 mm N/A 24900 N N/A
NA4907 N/A 35 mm N/A 55 mm N/A 20 mm N/A 35500 N N/A
NA6907 N/A 35 mm N/A 55 mm N/A 36 mm N/A 54000 N N/A
NKI35/30 N/A 35 mm N/A 50 mm N/A 30 mm N/A 22200 N N/A
NKIS35 N/A 35 mm N/A 58 mm N/A 22 mm N/A 33000 N N/A
NA4908 N/A 40 mm N/A 62 mm N/A 22 mm N/A 48500 N N/A
NA6908 N/A 40 mm N/A 62 mm N/A 40 mm N/A 74000 N N/A
NKI40/20 N/A 40 mm N/A 55 mm N/A 20 mm N/A 22000 N N/A
NKI40/30 N/A 40 mm N/A 55 mm N/A 30 mm N/A 35000 N N/A
NKI42/20 N/A 42 mm N/A 57 mm N/A 20 mm N/A 26000 N N/A
NA4909 N/A 45 mm N/A 68 mm N/A 22 mm N/A 51000 N N/A
NA6909 N/A 45 mm N/A 68 mm N/A 40 mm N/A 79000 N N/A
NKI45/25 N/A 45 mm N/A 62 mm N/A 25 mm N/A 36000 N N/A
Unit of Measure
1 2 3 4