M270749 / M270710CD Single Row Precision Roller Bearing Anti Friction Bearing
M270749 / M270710CD Single Row Precision Roller Bearing Anti Friction Bearing
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Basic Infomation
Place of Origin: LUOYANG
Brand Name: MONTON
Model Number: M270749/M270710CD
High Light:

tapered ball bearing


electric motor bearings

Payment & Shipping Terms
Packaging Details: Single box/Wooden case
Delivery Time: 7-35 days
Supply Ability: 100pcs/week
D: 447.675
D: 635
T: 257.175
Weight: 247KG
Product Description

M270749/M270710CD single row tapered roller bearing




Cone Part Number


Cup Part Number


Design Units


Bearing Weight

543.68 lb246.608 Kg

Cage Type


Ab - Cage-Cone Frontface Clearance

0.34 in8.6 mm


d - Bore

17.6250 in447.675 mm

D - Cup Outer Diameter

25.0000 in635.000 mm

B - Cone Width

4.7500 in120.650 mm

C - Double Cup Width

8.1250 in206.375 mm

T - Bearing Width across Cones

10.1250 in257.175 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 0.25 in6.400 mm
r - Cup Frontface "To Clear" Radius2 0.06 in1.5 mm

db - Cone Backface Backing Diameter

19.06 in484.10 mm

Da - Cup Frontface Backing Diameter

23.98 in605.03 mm

Aa - Cage-Cone Backface Clearance

0.31 in7.9 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 191000 lbf849000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 1280000 lbf5700000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 332000 lbf1480000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 109000 lbf484000 N


K - Factor7 1.76
e - ISO Factor8 0.7
Y1 - ISO Factor9 0.971.44
Y2 - ISO Factor10 1.44
G1 - Heat Generation Factor (Roller-Raceway)11 6870
Cg - Geometry Factor12 0.246

This has a one-piece (double) outer ring and two single inner rings. It is usually supplied complete with an inner-ring spacer as a pre-set assembly. This configuration gives a wide effective bearing spread and is frequently chosen for applications where overturning moments are a significant load component. TDO bearings can be used in fixed (locating) positions or allowed to float in the housing bore, for example, to compensate for shaft expansion. TDO CD outer rings also are available in most sizes. These outer rings have holes in the O.D. that permit the use of pins to prevent outer ring rotation in the housing. M270749/M270710CD is widely used in automotive,rolling mill,mining, metallurgy,plastics machinery and other industries. If you want to know more about M270749/M270710CD , welcome you contact us freely .



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