2780-65 – Center Support Bearing – Bmw Application – 1.378″ ID – 1.625″ Center Bearing To Base
$243.76
1 in stock
Description
BMW application center support bearing with 1.378″ bore and 1.625″ center-to-base height; rubber-isolated ball bearing assembly for BMW two-piece propshaft systems.
Full Description
Q: How does the 2780-65 differ from the 2780-80 -- both show 1.625" height and 1.378" bore? A: While the center-to-base height and bore ID are the same, the 2780-65 and 2780-80 differ in bracket geometry, mounting slot configuration, or isolator profile. The suffix numbers in the 2780-xx series denote different application-specific bracket shapes within the same bore/height family. Always confirm against the BMW OEM part number from the removed bearing.
Q: My BMW propshaft center support bearing was vibrating. I replaced it but the vibration returned after 10,000 miles -- why? A: Repeated short-interval failure almost always points to a flex disc (guibo) that has deteriorated, transferring torsional shock loads through the propshaft to the center bearing. Replace the flex disc concurrently with the center bearing on BMW applications; these two components work as a system.
Q: What is the correct press force for installing the BMW center bearing onto the stub shaft? A: BMW specifies hydraulic press installation with a drift tube sized to contact only the inner race. Pressing force varies by shaft condition but typically requires 2--4 kN for a correctly-dimensioned stub shaft. Heating the bearing to 80°C before installation reduces press force and prevents brinelling of the inner race.
Q: My BMW propshaft center support bearing was vibrating. I replaced it but the vibration returned after 10,000 miles -- why? A: Repeated short-interval failure almost always points to a flex disc (guibo) that has deteriorated, transferring torsional shock loads through the propshaft to the center bearing. Replace the flex disc concurrently with the center bearing on BMW applications; these two components work as a system.
Q: What is the correct press force for installing the BMW center bearing onto the stub shaft? A: BMW specifies hydraulic press installation with a drift tube sized to contact only the inner race. Pressing force varies by shaft condition but typically requires 2--4 kN for a correctly-dimensioned stub shaft. Heating the bearing to 80°C before installation reduces press force and prevents brinelling of the inner race.
Additional information
| Application | BMW |
|---|---|
| Bearing id | 1.378 |
| Center bearing to base | 1.625 |
| Ctr to ctr of mount holes | 6.300 |
| Notes | measured from top of bracket to center line |
| Partn number | 2780-65 |
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| Center Support Bearing (323) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Application Nissan Bearing id 1.181 Center bearing to base 2.375 Ctr to ctr of mount holes 0 Notes 620 Pickup (73-79) Partn number 1280-10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Nissan Juke 11-17 Bearing id 1.181 Center bearing to base 570 Ctr to ctr of mount holes 7.125 Notes Bolt heads opposite side of spacers Partn number 1280-15 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Nissan Bearing id 1.181 Center bearing to base 2.375 Ctr to ctr of mount holes 9.375 Notes Pickup 4X4 (79-88) Partn number 1280-20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Nissan, Infiniti Bearing id 1.181 Center bearing to base 2.170 Ctr to ctr of mount holes 6.000 Notes Double metal rings surrounding the rubber and bearing. Comes with nut and washer/spacer Partn number 1280-30 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Nissan Bearing id 1.378 Center bearing to base 2.180 Ctr to ctr of mount holes 0 Notes Infiniti/ Nissan. Like 1280-30 but with larger bearing ID / Bracket not included. comes with new nut washer/spacer Partn number 1280-35 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Nissan Bearing id 1.181 Center bearing to base 2.500 Ctr to ctr of mount holes 6.000 Notes Nissan / Infiniti / Frontier 4X4 (98-03) Hardbody 4X4 (86-97) Pathfinder 4X4 (87-03) Xterra 4X4 (00-03) QX4 4X4 (00-03) Partn number 1280-40 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Nissan Bearing id 1.181 Center bearing to base 2.125 Ctr to ctr of mount holes 5.875 Notes 300ZX (90-96) Partn number 1280-50 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application Infiniti Bearing id 1.181 Center bearing to base 1.125 Ctr to ctr of mount holes 6.000 Notes Q45 (90-96) Partn number 1280-70 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application INFINITI Q50, Q60 Bearing id 1.181 Ctr to ctr of mount holes 6.000 Notes 3 mm spacer Partn number 1280-74 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Application INFINITI Q50, Q60, Q70, M37, M56 Bearing id 1.181 Center bearing to base 197 Ctr to ctr of mount holes 6.000 Notes 11 mm spacer Partn number 1280-75 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
