Product line includes full-complement, one-, twoand four-row designs, all developed to meet our application requirements. These bearings offer higher radial load capacity than other bearing types, and they effectively reduce friction and help transmit power.
NU2236EMAC3
NU: See the structural diagram above.
22: Dimension Series Width Series + Diameter Series
10= width series 1; diameter series 0 (dimension series 10)
2= width series 0; diameter series 2 (dimension series 02)
22= width series 2; diameter series 2 (dimension series 22)
3= width series 0; diameter series 3 (dimension series 03)
23= width series 2; diameter series 3 (dimension series 23)
36: Inner Ring Bore Size
02 = 15 mm 03 = 17 mm
(for inner ring bore ≥ 20 mm):
bore code x 5 = bore diameter
04 = 4 x 5 = 20 mm
E: Enhanced Geometry
MA：Cage Type
MA = Single-piece, land-riding, machinedbrass cage
C3：Radial Internal Clearance
200RU02OA107R3
200： Bore Inch Metric
200 (20.0 in.) 200 (200 mm)
42 (4.25 in.) 210 (210 mm)
43 (4.375 in.) 220 (220 mm )
standard sizes standard sizes
are 4 – 27.20 inch are 100 – 600 mm
RU: See structure in the diagram above. “I” indicates an imperial size bearing.
02: Series
two digits indicates metric envelope dimensions
three digits indicates inch envelope dimensions
OA107: Modifications
(First two letters are assigned by Timken engineers)
Letter other than “O” in first position indicates modification to inner ring.
Letter other than “O” in second position indicates modification to outer ring.
R3: Radial Internal Clearance
R1 < R2 < R3 (Standard) < R4 < R5
NCF2944VC3
NCF: Bearing Type (ISO)
29: Dimension Series Width Series + Diameter Series
10 = width series 1; diameter series 0 (dimension series 10)
2 = width series 0; diameter series 2 (dimension series 02)
22 = width series 2; diameter series 2 (dimension series 22)
3 = width series 0; diameter series 3 (dimension series 03)
23 = width series 2; diameter series 3 (dimension series 23)
44: Inner Ring Bore Size
02 = 15 mm
03 = 17 mm
(for inner ring bore ≥ 20 mm):
bore code x 5 = bore diameter
04 = 4 x 5 = 20 mm
V: FullComplement
C3: Radial Internal Clearance
280RYL1782W33W30BC3
280: Inner Ring Bore Diameter
Standard sizes are140 mm – 1500 mm (5.5118 in. – 59.0551 in.)
RYL: Identifies Type of Design
RY, RYL, RX, RXL
1782: Series: outside diameter, assembly width, diameter under roller
W33 = Holes and grooves on O.D.
W30B = Face slots on inner ring.
C3: Radial Internal Clearance (RIC)
CF = semi-finished
C2 < C0
C0 = standard
C3 > C0
C4 > C3
C5 > C4
C6 = Special Clearance
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