I HAVE TWO BEARING HERE COULD BE A NATIONAL COULD BE AN NSK COULD BE A SKF WHO KNOWS BUT
IT LASTED 250,000 MILES DUDE SO I’M GOING TO SHOW YOU EXACTLY WHAT BEARING BRAND LASTED
250,000 MILES WHEEL BEARING REVIEW SO ON THE RIGHT HAND SIDE WE HAVE A NATIONAL BEARING
BEARING NUMBER IS 510050 BY NATIONAL MADE IN CHINA THIS BEARING CAME OUT OF A HONDA
ACCORD V6 2000 WITH 250,000 MILES ON IT IT’S AN NSK BEARING SO THIS NSK BEARING LASTED
250,000 MILES YOU CAN SEE THAT WEAR RING RIGHT THERE I’LL PUT IT UP TO THE MIC SO YOU GUYS
CAN HEAR WHAT 250,000 MILES ON A BEARING SOUNDS LIKE DOESN’T SOUND ALL THAT GOOD TAKE THE
BRAND NEW NATIONAL ONE NOTHING SMOOTH AS SILK WHAT THE AMAZING THING IS THE FACT THAT THIS
NSK BEARING LASTED 250,000 MILES SO ON THE INSIDE HERE LET ME SEE IF I CAN FIND IT LET
ME GET A RAG SO I THINK THEY CALL THIS I WANT TO SAY GALLING I COULD BE WRONG AT THE END
OF THIS VIDEO I’LL PUT A VIDEO THAT SHOWS FROM NSK WHAT THIS IS SPECIFICALLY CALLED
I WANT TO SAY GALLING BUT I COULD BE WRONG SO RIGHT THERE CAN YOU GUYS SEE THAT THERE’S
LIKE PITTING ON THE BEARING ON THE RACE I GUESS IT’S ALL THROUGHOUT EXCEPT IN SOME
SPOTS IN SOME SPOTS IT’S NOT WHAT CASUES THIS IS MOISTURE IN THE BEARING THE GREASE
AND THE WATER MIX AND MAKES AN ACID THAT ETCHES INTO THIS METAL SO AS THE WATER AND THE GREASE
COMBINE AND MAKES AN ACID THAT EATS INTO THE METAL AND STARTS EATING AWAY AT YOUR BEARING
SO THE ROLLERS THEMSELVES THE BALLS THEMSELVES WE’RE GETTING GALLING ON THERE TOO AND JUST
EATING IT AWAY BUT IT LASTED 250,000 MILES THAT’S AWESOME THAT’S VERY IMPRESSIVE
FOR A BEARING SO YOU GUYS CAN SEE WHAT 250,000 MILES LOOKS LIKE ON A BEARING IT SMELLS LIKE
GREASE AND DIRT COMBINED TOGETHER BUT I HAVE ONLY HEARD GOOD THINGS ABOUT NSK BEARINGS
SO THE NUMBER RIGHT HERE IS 45BWD07 4 5 BRAVO WHISKEY DAVID 0 7 SO SOME SERIOUS GALLING
HAS HAPPENED ON THIS BEARING BUT IT WAS MAKING A REALLY LOUD WHINING SOUND I MEAN YOU DRIVE
DOWN THE FREEWAY AND IT JUST WHINING AND HOWLING THAT’S HOW I KNEW IT WAS BAD IT WAS PRETTY
OBVIOUS WHICH SIDE IT WAS COMING FROM AS WELL NSK NSK BEARINGS ARE MADE IN JAPAN YOU CAN
SEE RIGHT THERE NSK JAPAN THE MARKING IN JAPAN SO THERE YOU GUYS GO I JUST WANTED TO SHOW
YOU WHAT A BEARING LASTING 250,000 MILES THIS NSK BEARING FROM JAPAN IT WENT THE DISTANCE
AWESOME MY LOCAL HONDA DEALERSHIP CARRIES THEM FOR ABOUT $100 BUCKS A PIECE YOU CAN
FIND THEM ONLINE A LITTLE BIT CHEAPER BUT I DON’T KNOW IF THERE REALLY NSK BEARINGS
CAUSE THERE ARE RIP OFFS OUT THERE THERE ARE COUNTERFEIT BEARINGS OUT THERE SO JUST BE
CAREFUL UM WHERE YOU GET THEM FROM WHAT VENDOR YOU PICK THEM UP FROM I’M PRETTY SURE WELL
I DON’T KNOW I WAS GOING TO SAY PRETTY SURE AMAZON IS QUALITY VENDOR BUT WHO KNOWS RIGHT
ANYONE CAN SELL ANYTHING ON AMAZON SO JUST BE CAREFUL WHERE YOU GET THEM FROM THIS IS
A NATIONAL BEARING NSK BEARING SKF IS A GREAT BEARING AS WELL IF YOU GUYS HAVE FOUND THIS
VIDEO HELPFUL PLEASE CONSIDER SUBSCRIBING TO BUNDYS QUESTIONS COMMENTS CONCERNS YOU
CAN REACH OUT TO ME AT BUNDYS GARAGE AT GMAIL DOT COM YOU CAN FOLLOW ME ON TWITTER AT BUNDYS
GARAGE AND LIKE ALWAYS I’LL KEEPEM ROLLIN FOR YA WELL WHAT ABOUT DAMAGE FROM CONTAMINATION
YEAH WELL CONTAMINATION IS A LITTLE BIT DIFFERENT BUT THAT HAPPENS WHEN FOREIGN MATERIALS ENTER
THE BEARING NOW WATER AND HARD PARTICLES ARE THE MOST COMMON THE DAMAGE STARTS ON THE ROLLING
CONTACT SURFACES AND EVENTUALLY LEADS TO FLAKING AND SPALLING THE CONDITION IS WORSE IN GREASE
APPLICATIONS CAUSE YOU CAN’T GET THAT CONTAMINATION OUT OF THE GREASE NOW LET’S LOOK AT THIS
LARGE TAPERED ROLLER BEARING RING HERE THAT WAS SENT TO OUR ANN ARBOR TECHNICAL CENTER
FOR EVALUATION WELL THIS IS A CLASSIC EXAMPLE OF WATER DAMAGE AND WHEN WATER AND GREASE
MIX TOGETHER IT FORMS AN ACID AT ALL THE METAL TO METAL CONTACTS IN THE BEARING SO YOU SEE
ALL OF THESE SMALL LINES YEAH THAT’S ACTUALLY ACID ETCHING CORROSION SO OVER TIME WHAT HAPPENS
IS THOUGH THIS MAY NOT LOOK LIKE A LOT OF DAMAGE IT EVENTUALLY TURNS INTO THIS LARGE
SPALL IN THE LOAD ZONE SO HOW CAN THIS BE AVOIDED WELL THIS TYPE OF FAILURE CAN OFTEN
BE AVOIDED BY USING THE RIGHT SEALS AND SEALING TECHNIQUES BY USING THE CORRECT RE LUBRICATION
AND MAINTENANCE INTERVALS AND PERHAPS BY MAKING HOUSING MODIFICATIONS TO HELP WATER DRAIN