Tapered Roller Bearings - TDI (Tapered Double Inner)

78255D/78571 bearing | Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial

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Price：	enquiry
Model Number：	78255D/78571
Series：	2.5616 in65.065 mm
r - Cup Backface "To Clear" Radius²：	78000
Design Units：	0.060 in1.50 mm
Db - Cup Backface Backing Diameter：	Spacer shows standard nominal .01 radii, actual bearing may vary
da - Cone Frontface Backing Diameter：	Imperial

Series	78000
Cone Part Number	78255D
Cup Part Number	78571
Design Units	Imperial
Bearing Weight	10.8 lb4.9 Kg
Cage Type	Stamped Steel
Aa - Cage-Cone Backface Clearance	0 in0 mm
d - Bore	2.5586 in64.988 mm
D - Cup Outer Diameter	5.7080 in144.983 mm
B - Double Cone Width	2.5980 in65.989 mm
C - Cup Width	0.9058 in23.007 mm
T - Bearing Width across Cups	2.5616 in65.065 mm
R - Cone Frontface "To Clear" Radius¹	0.060 in1.50 mm
r - Cup Backface "To Clear" Radius²	0.140 in3.600 mm
da - Cone Frontface Backing Diameter	3.11 in79 mm
Db - Cup Backface Backing Diameter	4.65 in118.10 mm
Ab - Cage-Cone Frontface Clearance	0.08 in2 mm
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)³	9970 lbf44300 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)⁴	66900 lbf298000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)⁵	17400 lbf77200 N
C_a90 - Dynamic Thrust Rating (90 million revolutions)⁶	14800 lbf65700 N
K - Factor⁷	0.67
e - ISO Factor⁸	0.87
Y1 - ISO Factor⁹	0.78
Y2 - ISO Factor¹⁰	1.16
Cg - Geometry Factor¹¹	0.0884
Note	Spacer shows standard nominal .01 radii, actual bearing may vary

No.	Series	r - Cup Backface "To Clear" Radius²	Design Units	Db - Cup Backface Backing Diameter	da - Cone Frontface Backing Diameter	D - Cup Outer Diameter
6917ZZ	85	1.1	6917ZZ	5300	120	1.55
23976R	4.0	23976R	660	500	520	295
ZKFLX08-20	A-1/4-28UNF	ZKFLX08-20	Medium-duty(X)	-	1 1/4	-
JHM522649AC/JHM522610	47.000 mm1.8504 in	HM522600	2.54 mm0.1 in	7.110 mm0.280 in	259.2	METRIC
HB 8	HB 8	-	-	-	-	-
5x23.8	3.50	23.8	5.0	-	-	-
C 31/1000 MB	300	220	-	1000.000	2500.000	45500.000
NK85/35A	1.0	NK85/35A	5000	85	105	34.70
K 89316 TN	2400	1200	1060.000	240.000	0.000	11.000
32006 X	17.000	12000	10000	4.550	44.000	43.900

Bearing Dimension Catalog

Whenever it is necessary to select Timken bearings for new applications ... 2.02 lb. 2.6020. 78255D. 64.988. 65.989. 1.5. 3.54 kg. 78571. 144.983.

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Jun 9, 2021 — HOME -- Timken bearing -- Tapered Roller Bearings -- Timken 78255D/78551+Y3S-78551 bearing. d - 64,987 mm. D - 140,03 mm. T - 66,091 mm.