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Needle roller bearing is a roller bearing with cylindrical rollers. Compared with its diameter, the rollers are thin and long. This kind of roller is called needle roller.

Part Number

d - Bore

D - Outer Diameter

B - Width

Cr - Dynamic Radial Rating

Cor - Static Radial Rating

Reference speed

Limiting speed

NKS37-XL - 52 mm - 41500 N 50000 N 7100 rpm 11700 rpm
NAO40X55X17-XL 40 mm 55 mm 17 mm 25500 N 46000 N 5900 rpm 10300 rpm
RNAO40X50X17-XL - 50 mm - 24200 N 41500 N 7000 rpm 11500 rpm
RNAO40X50X34-ZW-ASR1-XL - 50 mm - 41500 N 83000 N 7000 rpm 11500 rpm
RNAO40X55X20-XL - 55 mm - 37000 N 57000 N 6600 rpm 11300 rpm
NKS45-XL - 60 mm - 45500 N 60000 N 6000 rpm 9800 rpm
RNAO45X55X17-XL - 55 mm - 25500 N 46000 N 6300 rpm 10300 rpm
RNAO45X62X40-ZW-ASR1-XL - 62 mm - 76000 N 135000 N 5900 rpm 10000 rpm
NAO50X68X20-IS1-XL 50 mm 68 mm 20 mm 32000 N 66000 N 5100 rpm 8500 rpm
NKS50-XL - 65 mm - 48000 N 67000 N 5500 rpm 8900 rpm
RNAO50X62X20-XL - 62 mm - 30000 N 60000 N 5800 rpm 9300 rpm
RNAO50X65X20-XL - 65 mm - 40500 N 62000 N 5600 rpm 9100 rpm
RNAO50X65X40-ZW-ASR1-XL - 65 mm - 69000 N 124000 N 5600 rpm 9100 rpm
RNAO55X68X20-XL - 68 mm - 32000 N 66000 N 5400 rpm 8500 rpm
RNAO60X78X40-ZW-ASR1-XL - 78 mm - 85000 N 171000 N 4650 rpm 7700 rpm
RNAO65X85X30-XL - 85 mm - 64000 N 123000 N 4550 rpm 7100 rpm
RNAO70X90X30-XL - 90 mm - 68000 N 135000 N 4250 rpm 6600 rpm
NKS75-XL - 95 mm - 81000 N 123000 N 3950 rpm 6000 rpm
NAO80X110X30-XL 80 mm 110 mm 30 mm 76000 N 172000 N 3200 rpm 5200 rpm
NAO90X120X30-XL 90 mm 120 mm 30 mm 80000 N 188000 N 2950 rpm 4700 rpm