Cylindrical Roller Radial Bearings - Two-Row On The Timken Company

Smarter Bearing Selection Is Here

The Timken^® Syber^® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

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Analyze Bearing Performance in an Application with Timken^® Syber^® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

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Additional radial load-carrying capability compared to single-row product.
Designed to ISO/DIN specified interchangeable dimensions.
Sold as complete assembly.

NNU-1

Outer rings with solid ribs.
Lubrication grooves and holes on outer rings.
One solid brass cage.

The radial internal clearance (RIC) for the bearing assembly must be included when ordering the complete assembly.

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Bore d (mm)

O.D. D (mm)

O.D. D (in)

Width B (mm)

Width B (in)

Dynamic Load Rating C₁ (N)

Dynamic Load Rating C₁ (lbf)

Thermal Speed Ratings - Oil (rpm)

Thermal Speed Ratings - Grease (rpm)

Part Number	Bore d	O.D. D	Width B	DUR/DOR F/E	Static Load Rating C_o	Dynamic Load Rating C₁	Thermal Speed Ratings - Oil	Thermal Speed Ratings - Grease	CAD

NNU49/630MAW33	N/A 630.000 mm	N/A 850 mm33.4646 in	N/A 218 mm8.5827 in	N/A 704 mm27.7165 in	N/A 11520000 N2580000 lbf	N/A 4570000 N1030000 lbf	N/A 270 rpm	N/A 250 rpm	N/A
NNU49/670MAW33	N/A 670 mm	N/A 900 mm35.4331 in	N/A 230 mm9.0551 in	N/A 738 mm29.0551 in	N/A 13460000 N3020000 lbf	N/A 5430000 N1220000 lbf	N/A 240 rpm	N/A 230 rpm	N/A
NNU40/670MAW33	N/A 670 mm	N/A 980 mm38.5827 in	N/A 308 mm12.1260 in	N/A 744 mm29.2913 in	N/A 18840000 N4236000 lbf	N/A 9740000 N2190000 lbf	N/A 210 rpm	N/A 200 rpm	N/A
NNU49/710MAW33	N/A 710 mm	N/A 950 mm37.4016 in	N/A 243 mm9.5669 in	N/A 782 mm30.7874 in	N/A 14660000 N3300000 lbf	N/A 6310000 N1420000 lbf	N/A 220 rpm	N/A 210 rpm	N/A
NNU49/750MAW33	N/A 750 mm	N/A 1000 mm39.3701 in	N/A 250 mm9.8425 in	N/A 831 mm32.7165 in	N/A 16480000 N3700000 lbf	N/A 6230000 N1400000 lbf	N/A 200 rpm	N/A 190 rpm	N/A
NNU49/800MAW33	N/A 800 mm	N/A 1060.000 mm41.7323 in	N/A 258 mm10.1575 in	N/A 880 mm34.6457 in	N/A 17390000 N3909000 lbf	N/A 7070000 N1590000 lbf	N/A 190 rpm	N/A 180 rpm	N/A
NNU49/850MAW33	N/A 850 mm	N/A 1120 mm44.0945 in	N/A 272 mm10.7087 in	N/A 939 mm36.9685 in	N/A 17900000 N4020000 lbf	N/A 6810000 N1530000 lbf	N/A 190 rpm	N/A 170 rpm	N/A
NNU49/900MAW33	N/A 900 mm	N/A 1180 mm46.4567 in	N/A 280 mm11.0236 in	N/A 986 mm38.8189 in	N/A 20650000 N4643000 lbf	N/A 7790000 N1750000 lbf	N/A 160 rpm	N/A 150 rpm	N/A