The Timken Company - Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)

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Items	JW4549 - JW4510 (K983135 - K998908) Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)	JLM104948 - JLM104910 (LM104948XS - LM104910ES) Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)	JM205149 - JM205110 (M205149XS - M205110ES) Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)	JHM807045 - JHM807012 (HM807045XS - HM807012ES) Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)	JLM506849 - JLM506810 (LM506849XS - LM506810ES) Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)
Cone Part Number	N/A JW4549	N/A JLM104948	N/A JM205149	N/A JHM807045	N/A JLM506849
Cup Part Number	N/A JW4510	N/A JLM104910	N/A JM205110	N/A JHM807012	N/A JLM506810
Inner Spacer Part Number	N/A K983135	N/A LM104948XS	N/A M205149XS	N/A HM807045XS	N/A LM506849XS
Outer Spacer Part Number	N/A K998908	N/A LM104910ES	N/A M205110ES	N/A HM807012ES	N/A LM506810ES
Snap Ring Part Number	N/A K928956	N/A K444653R	N/A K516778R	N/A K518781R	N/A K516778R
d - Bore	N/A 45 mm1.7717 in	N/A 50 mm1.9685 in	N/A 50 mm1.9685 in	N/A 50 mm1.9685 in	N/A 55 mm2.1654 in
D - Cup Outer Diameter	N/A 95 mm3.7402 in	N/A 82.000 mm3.2283 in	N/A 90 mm3.5433 in	N/A 105 mm4.1339 in	N/A 90 mm3.5433 in
T - Width	N/A 64 mm2.5197 in	N/A 49 mm1.9291 in	N/A 62 mm2.4409 in	N/A 80 mm3.1496 in	N/A 52 mm2.0472 in
C - Width	N/A 46 mm1.811 in	N/A 39.425 mm1.5522 in	N/A 51.438 mm2.0251 in	N/A 63.54 mm2.5016 in	N/A 42.504 mm1.6734 in
R - Cone Backface "To Clear" Radius¹	N/A 2.540 mm0.1 in	N/A 3.050 mm0.12 in	N/A 3.050 mm0.12 in	N/A 3.050 mm0.12 in	N/A 1.520 mm0.06 in
r - Cup Backface "To Clear" Radius²	N/A 0.3 mm0.010 in	N/A 0.40 mm0.020 in	N/A 0.5 mm0.020 in	N/A 0.8 mm0.030 in	N/A 0.5 mm0.020 in
db - Cone Backface Backing Diameter	N/A 64 mm2.52 in	N/A 61 mm2.4 in	N/A 63 mm2.48 in	N/A 69 mm2.72 in	N/A 65 mm2.56 in
Da - Cup Frontface Backing Diameter	N/A 90.90 mm3.58 in	N/A 78.00 mm3.11 in	N/A 85.10 mm3.39 in	N/A 100.10 mm3.96 in	N/A 86.40 mm3.40 in
C90 - Dynamic Radial Rating (90 million revolutions)³	N/A 30700 N6900 lbf	N/A 25000 N5610 lbf	N/A 38000 N8540 lbf	N/A 52700 N11900 lbf	N/A 28200 N6340 lbf
C1 - Dynamic Radial Rating (1 million revolutions)⁴	N/A 206000 N46300 lbf	N/A 168000 N37700 lbf	N/A 255000 N57400 lbf	N/A 354000 N79600 lbf	N/A 190000 N42600 lbf
C_a90 - Dynamic Thrust Rating (90 million revolutions)⁵	N/A 45500 N10200 lbf	N/A 13000 N2930 lbf	N/A 21400 N4810 lbf	N/A 44000 N9890 lbf	N/A 19400 N4370 lbf
C90₍₂₎ - Dynamic Radial Rating (Two-Row, 90 million revolutions)⁶	N/A 53400 N12000 lbf	N/A 43500 N9770 lbf	N/A 66200 N14900 lbf	N/A 91800 N20600 lbf	N/A 49100 N11000 lbf
K - Factor⁷	N/A 0.67	N/A 1.91	N/A 1.78	N/A 1.2	N/A 1.45
e - ISO Factor⁸	N/A 0.87	N/A 0.31	N/A 0.33	N/A 0.49	N/A 0.4
Y1 - ISO Factor⁹	N/A 0.78	N/A 2.21	N/A 2.05	N/A 1.38	N/A 1.68
Y2 - ISO Factor¹⁰	N/A 1.16	N/A 3.29	N/A 3.06	N/A 2.06	N/A 2.5
¹ These maximum fillet radii will be cleared by the bearing corners. ² These maximum fillet radii will be cleared by the bearing corners. ³ Based on 90 x 10⁶ revolutions L₁₀ life, for The Timken Company life calculation method. C₉₀ and C_a90 are radial and thrust values. ⁴ Based on 1 x 10⁶ revolutions L₁₀ life, for the ISO life calculation method. ⁵ Based on 90 x 10⁶ revolutions L₁₀ life, for The Timken Company life calculation method. C₉₀ and C_a90 are radial and thrust values for a single-row, C₉₀₍₂₎ is the two-row radial value. ⁶ Based on 90 x 10⁶ revolutions L₁₀ life, for The Timken Company life calculation method. C₉₀ and C_a90 are radial and thrust values for a single-row, C₉₀₍₂₎ is the two-row radial value. ⁷ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁸ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁹ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ¹⁰ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.