Timken 644 – 632
Tapered Roller Bearings-TS(Tapered Single)Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Specifications
Series
635
Cone Part Number
644
Cup Part Number
632
Design Unit
Inch
Cage Material
Stamped Steel
Related Assembly Number(s)
644-902A2
Dimensions
d - Bore
71.438 mm
D - Cup Outer Diameter
136.525 mm
B - Cone Width
41.275 mm
C - Cup Width
31.750 mm
T - Bearing Width
41.275 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
3.600 mm
r - Cup Backface "To Clear" Radius2
3.30 mm
da - Cone Frontface Backing Diameter
81 mm
db - Cone Backface Backing Diameter
87 mm
Da - Cup Frontface Backing Diameter
125.00 mm
Db - Cup Backface Backing Diameter
118.11 mm
Ab - Cage-Cone Frontface Clearance
2.5 mm
Aa - Cage-Cone Backface Clearance
3.8 mm
a - Effective Center Location3
-11.2 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)4
71600 N
C1 - Dynamic Radial Rating (1 million revolutions)5
276000 N
C0 - Static Radial Rating
298000 N
C6
44400 N
Factors
K - Factor7
1.61
e - ISO Factor8
0.36
Y - ISO Factor9
1.66
G1 - Heat Generation Factor (Roller-Raceway)
106.4
G2 - Heat Generation Factor (Rib-Roller End)
21
Cg - Geometry Factor10
0.0814
