TIMKEN 4A-7 Bearing

TIMKEN 4A-7 tapered roller bearings

Also known as : 4A-7

• Inside Diameter: 19.05 mm
• Outside Diameter: 49.154 mm
• Width: 18.26 mm
• Basic dynamic load rating: 20.3 kN
• Basic static load rating: 20.6 kN

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TIMKEN 4A-7 Bearing

Series	5C
model	4A-7
Cone Part Number	4A
Cup Part Number	7
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.200 Kg 0.4 lb
Dimensions
d - Bore	19.050 mm 0.7500 in
D - Cup Outer Diameter	49.154 mm 1.9352 in
B - Cone Width	11.908 mm 0.4688 in
C - Cup Width	15.088 mm 0.5940 in
T - Bearing Width	18.260 mm 0.7189 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	1.520 mm 0.06 in
r - Cup Backface "To Clear" Radius	0.38 mm 0.020 in
da - Cone Frontface Backing Diameter	23.62 mm 0.93 in
db - Cone Backface Backing Diameter	25.40 mm 1.00 in
Da - Cup Frontface Backing Diameter	42.93 mm 1.69 in
Db - Cup Backface Backing Diameter	38.61 mm 1.52 in
Ab - Cage-Cone Frontface Clearance	2.3 mm 0.09 in
Aa - Cage-Cone Backface Clearance	0.3 mm 0.01 in
a - Effective Center Location	-1.8 mm -0.07 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	5250 N 1180 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	20300 N 4550 lbf
C0 - Static Radial Rating	20600 N 4640 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	4310 N 969 lbf
Factors
K - Factor	1.22
e - ISO Factor	0.48
Y - ISO Factor	1.25
G1 - Heat Generation Factor (Roller-Raceway)	4.6
G2 - Heat Generation Factor (Rib-Roller End)	2.6
Cg - Geometry Factor	0.0456

TIMKEN 4A-7 bearings, TS (Tapered Single) Imperial, Tapered roller bearings.