KOYO MK681 needle roller bearings
Our highly-skilled and factory-trained service NTN Bearing de Mexico, S.A. experts have the resources to help you with all ZZ (Double Shield) Seals your 8 Days Days to Ship KOYO MK681 needle roller bearings needs - including routine maintenance, major repairs, warranty service, and needle roller bearings equipment inspections.
What is MK681 bearing interchange？
| Brand Name: |
KOYO |
| Model Number: |
MK681 |
| Series: |
M252300 |
| Cone Part Number: |
M252330X |
| Cup Part Number: |
M252310 |
| Design Units: |
Imperial |
| Bearing Weight: |
33.70 Kg |
| Cage Type: |
Stamped Steel |
| d: |
234.95 mm |
| D: |
381.000 mm |
| PDF |
MK681 |
Product Details
| Series |
M252300 |
| Cone Part Number |
M252330X |
| Cup Part Number |
M252310 |
| Design Units |
Imperial |
| Bearing Weight |
33.70 Kg |
| Cage Type |
Stamped Steel |
| d |
234.95 mm |
| D |
381.000 mm |
| B - Cone Width |
74.613 mm |
| C - Cup Width |
57.150 mm |
| B |
74.610 mm |
| R - Cone Backface To Clear Radius1 |
6.35 mm |
| r - Cup Backface To Clear Radius2 |
3.30 mm |
| da - Cone Frontface Backing Diameter |
261.87 mm |
| db - Cone Backface Backing Diameter |
272.03 mm |
| Da - Cup Frontface Backing Diameter |
364.00 mm |
| Db - Cup Backface Backing Diameter |
356.11 mm |
| Ab - Cage-Cone Frontface Clearance |
4.8 mm |
| Aa - Cage-Cone Backface Clearance |
7.6 mm |
| a - Effective Center Location3 |
-6.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
73200 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
283000 lbf |
| C0 - Static Radial Rating |
455000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
41700 lbf |
| K - Factor7 |
1.76 |
| e - ISO Factor8 |
0.33 |
| Y - ISO Factor9 |
1.8 |
| G1 - Heat Generation Factor (Roller-Raceway) |
1839.2 |
| G2 - Heat Generation Factor (Rib-Roller End) |
226.1 |
| Cg - Geometry Factor |
0.159 |