Tapered Roller Bearings - TS (Tapered Single)

3878A/3821 bearing | Tapered Roller Bearings/TS (Tapered Single) Imperial

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Price：	enquiry
Model Number：	3878A/3821
Series：	1.49
r - Cup Backface "To Clear" Radius²：	30.165 mm1.1876 in
Design Units：	3800
Db - Cup Backface Backing Diameter：	1.27 mm0.050 in
da - Cone Frontface Backing Diameter：	3.560 mm0.14 in

Series	3800
Cone Part Number	3878A
Cup Part Number	3821
Design Units	Imperial
Bearing Weight	0.9 Kg1.900 lb
Cage Type	Stamped Steel
d - Bore	36.513 mm1.4375 in
D - Cup Outer Diameter	85.725 mm3.3750 in
B - Cone Width	30.163 mm1.1875 in
C - Cup Width	23.813 mm0.9375 in
T - Bearing Width	30.165 mm1.1876 in
R - Cone Backface "To Clear" Radius¹	3.560 mm0.14 in
r - Cup Backface "To Clear" Radius²	1.27 mm0.050 in
da - Cone Frontface Backing Diameter	46.99 mm1.85 in
db - Cone Backface Backing Diameter	54.10 mm2.13 in
Da - Cup Frontface Backing Diameter	82.00 mm3.23 in
Db - Cup Backface Backing Diameter	74.93 mm2.95 in
Ab - Cage-Cone Frontface Clearance	2.8 mm0.11 in
Aa - Cage-Cone Backface Clearance	1 mm0.04 in
a - Effective Center Location³	-8.1 mm-0.32 in
C90 - Dynamic Radial Rating (90 million revolutions)⁴	7240 lbf32200 N
C1 - Dynamic Radial Rating (1 million revolutions)⁵	27900 lbf124000 N
C0 - Static Radial Rating	33200 lbf148000 N
C_a90 - Dynamic Thrust Rating (90 million revolutions)⁶	4980 lbf22200 N
K - Factor⁷	1.45
e - ISO Factor⁸	0.4
Y - ISO Factor⁹	1.49
G1 - Heat Generation Factor (Roller-Raceway)	37.8
G2 - Heat Generation Factor (Rib-Roller End)	13.5
Cg - Geometry Factor¹⁰	0.0873

No.	Series	r - Cup Backface "To Clear" Radius²	Design Units	Db - Cup Backface Backing Diameter	da - Cone Frontface Backing Diameter	D - Cup Outer Diameter
6406/N	0.74 Kg	1.500 mm	23.000 mm	90.000 mm	13000 rpm	9300 rpm
E/P2B/TRB/45MM/ECO	3.18	2.64	0.7	0.87	12 lb	0883450507332
NAS 5068 ZZ	340	2.5	340	NAS 5068 ZZ	180.00	404.0
7008DF FY	40	0.6	1.0	11000	8900	7008DFFY
23034CAME4	23034CAME4	13.00	260	2.9	4.3	2.8
53313	67	65	1.1	2200	1400	53313
GEZ 212 ES-2LS	1270.000	425.000	6.000	69.850	111.1250	300
BT4B 328909 G/HA1VA901	336.550	780	9300	4730	BT4B 328909 G/HA1VA901	304.800
7007 CB	0.204	8.300	9.360	35.000	62.000	14.000
22244EMD1	22244EMD1	59.800	21.0	220	4.0	1500

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