Specifications of TIMKEN Bearing 688TD - 672
Specifications
Series |
675 |
Cone Part Number |
688TD |
Cup Part Number |
672 |
Design Unit |
Inch |
Bearing Weight |
1.6 lb0.70 Kg |
Cage Material |
Stamped Steel |
Dimensions
d – Bore |
3.9453 in100.211 mm |
D – Cup Outer Diameter |
6.625 in168.275 mm |
B – Double Cone Width |
3.7500 in95.250 mm |
C – Cup Width |
1.1875 in30.163 mm |
T – Bearing Width across Cups |
3.75 in95.25 mm |
Abutment and Fillet Dimensions
R – Cone Backface “To Clear” Radius1 |
0.03 in0.8 mm |
r – Cup Backface “To Clear” Radius2 |
0.130 in3.3 mm |
da – Cone Frontface Backing Diameter |
4.45 in113 mm |
Db – Cup Backface Backing Diameter |
5.87 in149.10 mm |
Ab – Cage-Cone Frontface Clearance |
0.12 in3 mm |
Basic Load Ratings
C90 – Dynamic Radial Rating (One-Row, 90 million revolutions)3 |
14600 lbf64800 N |
C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)4 |
97800 lbf435000 N |
C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)5 |
25400 lbf113000 N |
Ca90 – Dynamic Thrust Rating (90 million revolutions)6 |
11700 lbf52200 N |