Nuestros productos utilizados en la industria automotriz y de camiones incluyen principalmente: cojinetes de rueda, kits de cojinetes de rueda, cojinetes de cubo de rueda, cojinetes de alternador, cojinetes de tensor, cojinetes de embrague y cojinetes de caja de cambios, etc.

Double Row TNA SeriesNA691 Bearing

Double row tapered roller bearing TNA bearings are non-adjustable, double-row bearings that are supplied with built-in clearance.This results in a specifified mounting setting range satisfactory for specifific applications. They are similar to type TDO, but the inner-ring front faces are extended so that they abut, which eliminates the need for the inner-ring spacer of a TDO bearing.They can be used at either fixed positions or allowed to float in the housing bore to compensate for shaft expansion.

For desired fifitting practice and resultant mounted setting range information, contact your VAFEM engineer. If a closer control of mounted setting range is required, type TDO bearing assembly is recommended.

VAFEM (Shang Hai) Bearing Technology Co.,Ltd

image/20220811/1660196545.jpg

Double Row TNA Series

Dimension and Parameters

Bearing Dimensions(mm/in.)

d :101.6

D :168.275

T :92.075

C :69.85

Load Ratings(N/lbf)

Dynamic₍₁₎

C_{1(2) :}461000

Factors₍₂₎

e :0.47

Y_{1 :}1.43

Y_{2 :}2.14

Dynamic₍₃₎

C_{90 :}68600

C_{a90 :}55300

C_{90(2) :}119000

Factors⁽²⁾

K :1.24

Part Number

Inner :NA691

Outer :672D

Bearing Dimensions(mm/in.)

Shaft

Max. Shaft Fillet Radius

R^{(4) :}3.5

Backing Shoulder Dia.

d_{b :}118

Housing

Max. Housing Fillet Radius

r^{(4) :}0.8

Backing Shoulder Dia.

D_{a :}160

Pin(mm/in.)

K_{a :}–

K_{b :}–

Bearing Weight(kg/lbs.) :7.58

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