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A4044-A4138-TIMKEN Tapered Roller Bearings 11.113mmx34.989mm

  • A4044-A4138-TIMKEN Tapered Roller Bearings 11.113mmx34.989mm



This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
Series A4000
Cone Part Number A4044
Cup Part Number A4138
Design Units Imperial
Bearing Weight 0.10 Kg0.1 lb
Cage Type Stamped Steel
d - Bore 11.113 mm0.4375 in
D - Cup Outer Diameter 34.989 mm1.3775 in
B - Cone Width 10.988 mm0.4326 in
C - Cup Width 8.730 mm0.3437 in
T - Bearing Width 10.998 mm0.4330 in
R - Cone Backface "To Clear" Radius1 1.270 mm0.050 in
r - Cup Backface "To Clear" Radius2 1.27 mm0.050 in
da - Cone Frontface Backing Diameter 15.49 mm0.61 in
db - Cone Backface Backing Diameter 17.53 mm0.69 in
Da - Cup Frontface Backing Diameter 32.51 mm1.28 in
Db - Cup Backface Backing Diameter 28.96 mm1.14 in
Ab - Cage-Cone Frontface Clearance 1.8 mm0.07 in
Aa - Cage-Cone Backface Clearance 0 mm0 in
a - Effective Center Location3 -2.5 mm-0.1 in