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

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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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Unit of Measure

Items	NNU4930MAW33 Cylindrical Roller Radial Bearings - Two-Row	NNU4932MAW33 Cylindrical Roller Radial Bearings - Two-Row	NNU4934MAW33 Cylindrical Roller Radial Bearings - Two-Row	NNU4936MAW33 Cylindrical Roller Radial Bearings - Two-Row	NNU4938MAW33 Cylindrical Roller Radial Bearings - Two-Row
Bore d	N/A 150 mm	N/A 160 mm	N/A 170 mm	N/A 180 mm	N/A 190 mm
O.D. D	N/A 210 mm8.2677 in	N/A 220 mm8.6614 in	N/A 230 mm9.0551 in	N/A 250 mm9.8425 in	N/A 260 mm10.2362 in
Width B	N/A 60 mm2.3622 in	N/A 60 mm2.3622 in	N/A 60 mm2.3622 in	N/A 69 mm2.7165 in	N/A 69 mm2.7165 in
DUR/DOR F/E	N/A 168.5 mm6.6339 in	N/A 178.5 mm7.0276 in	N/A 188.5 mm7.4213 in	N/A 202 mm7.9528 in	N/A 212 mm8.3465 in
Static Load Rating C_o	N/A 668000 N150200 lbf	N/A 692000 N155600 lbf	N/A 696000 N156200 lbf	N/A 850000 N191000 lbf	N/A 890000 N200000 lbf
Dynamic Load Rating C₁¹	N/A 374000 N84100 lbf	N/A 380000 N85300 lbf	N/A 376000 N84600 lbf	N/A 449000 N101000 lbf	N/A 459000 N103000 lbf
Chamfer r_smin	N/A 2 mm0.08 in
Chamfer r_1smin²	N/A 2 mm0.080 in
Backing Shaft Diameter d_s	N/A 165 mm6.5000 in	N/A 175 mm6.8900 in	N/A 185 mm7.2800 in	N/A 198 mm7.8000 in	N/A 207 mm8.1500 in
Backing Housing Diameter D_s	N/A 197 mm7.7600 in	N/A 207 mm8.1500 in	N/A 217 mm8.5400 in	N/A 232 mm9.1300 in	N/A 242 mm9.53 in
Lubrication Groove g	N/A 6.8 mm0.27 in	N/A 6.8 mm0.27 in	N/A 6.8 mm0.27 in	N/A 9.6 mm0.38 in	N/A 9.6 mm0.38 in
Lubrication Hole Diameter h	N/A 3.0 mm0.12 in	N/A 3.0 mm0.12 in	N/A 3.0 mm0.12 in	N/A 4.5 mm0.18 in	N/A 4.5 mm0.18 in
Number of Lubrication Holes	N/A 6
Dimension S³	N/A 2.60 mm0.100 in	N/A 2.80 mm0.110 in	N/A 2.80 mm0.110 in	N/A 3.40 mm0.130 in	N/A 2 mm0.080 in
Geometry Factor C_g⁴	N/A 0.199	N/A 0.206	N/A 0.161	N/A 0.136	N/A 0.1410
Thermal Speed Ratings - Oil	N/A 2100 rpm	N/A 2000 rpm	N/A 1900 rpm	N/A 1700 rpm	N/A 1600 rpm
Thermal Speed Ratings - Grease	N/A 1800 rpm	N/A 1700 rpm	N/A 1600 rpm	N/A 1500 rpm	N/A 1400 rpm
Weight	N/A 6.255 Kg13.90 lb	N/A 6.57 Kg14.6 lb	N/A 6.93 Kg15.4 lb	N/A 10.395 Kg23.1 lb	N/A 10.71 Kg23.8 lb
Full Timken Part Number	N/A
¹ Based on 1 x 10⁶ revolutions L₁₀ life, for the ISO life calculation method. ² Based on 1 x 10⁶ revolutions L₁₀ life, for the ISO life calculation method. ³ Permissible axial displacement from normal position of one bearing ring in relation to the other. ⁴ C_g factor for bearing without inner ring.