Bangkok Belt & Industry Centre Sdn. Bhd. (246665-W)

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NTN BEARING 1208

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NTN BEARING 1208

Type: Double-row, self-aligning ball bearing with cylindrical (straight) bore, open design (no seals)
Dimensions: 40 mm inner diameter (bore) × 80 mm outer diameter × 18 mm width

SKU: BNT1208 Category: NTN BEARING

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Description

Product Description

PRODUCT DEFINITION

Brand	SNR
d – Internal diameter	40 mm
D – External diameter	80 mm
B – Bearing/Inner ring width	18 mm
d1 – External diameter inner ring	54 mm
D1 – Inner diameter outer ring	67,1 mm
rs – Min fillet radius	1,1 mm
Radial clearance class	CN
Precision class	P0
Mass	0,417 kg

PRODUCT PERFORMANCE

C – Dynamic load	18,9 kN
C0 – Static load	6,5 kN
Cu – Fatigue limit load	0,3 kN
e – Coefficient	0.22
Y0 – Static axial load coefficient	3.01
Y1 – Lower axial load coefficient	2.87
Y2 – Upper axial load coefficient	4.44
N ref – Reference thermal speed	8600 tr/min
N lim – Mechanical Limit Speed	11000 tr/min
Tmin – Min operating temperature	-40 °C
Tmax – Max operating temperature	120 °C

BEARING FREQUENCIES

BPFO – Over rolling frequency on outer ring (60 rpm)	7,279 Hz
BPFI – Over rolling frequency on inner (60 rpm)	9,721 Hz
BSF – Over rolling frequency on rolling element (60 rpm)	6,747 Hz
BRF – Rotational frequency – rolling element (60 rpm)	3,374 Hz
FTF – Rotational frequency – cage (60 rpm)	0,428 Hz