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Dave in Alberta

Looking for crossover numbers for bevel gear box ball bearings

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Dave in Alberta

Hi All

Brought home a Simplicity 3416 H with the contents of the bevel gear box in a cardboard box.  The input shaft had a problem and the previous owner had torn it apart and not gotten any further. The roller bearings, Simplicity part 172256 are not in the cardboard box, so I can't get a number off them to search for replacements. Does anyone have info on cross over numbers for these? 

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PhanDad

BGB Bearings/Seals Info I've collected over the years:

Part   From Posts   Sov18   T-10   Other
                 
Big Oil Seal   SKF12745   CR 542016        
                 
                 
                 
Sm Oil Seal   National 351267   TB2 137 87 25 TTO C415 4        
        New for Rebuild:        
        TB2 137 87 28 TTO C415 3        
                 
Big Bearing   IDC 6205-2RS-7/8 (Remove Seal)   Fafnir 205K17   BCA BDE(?) N14 or   JD 9207
    BCA 205N14       BCA EOB(?) N14    6205-7/8
    RB Tech 6205-14           52mm OD x 7/8" ID
                 
Sm Needle Brg   Timken BH1412   Torrington BH-1412       7/8" Dia
                 
                 
                 
Woodruff Keys   3/16x47/64x19/64 B90 Hard            
                 
                 
                 
Big Seal Spacer   1.940"ODx1.680"IDx0.408"            
                 
                 
                 
O-ring   0.739IDx0.070 (No 18)            

 

The 172256 bearing is an odd-ball as I understand it, a metric bearing with a 7/8" shaft:


https://simpletractors.com/forums/topic/48890-bgb-bearing-redux/

There's a BGB Rebuild video available on the site:

https://simpletractors.com/videos/view-64-simplicity-service-video-power-steering-rotary-valve-and-bevel-gear-box/

 

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Bill725

The only current manufacturer of the big BGB ball bearings I know of is Peer 6204-14. FYI, B&S/Simplicity does not manufacturer their own bearings or seals, My understanding is B&S/Simplicity orders a whole bunch of bearings at a time.

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Dave in Alberta

Thanks for that update Bill725.  Have my bearing supplier looking into availability.  Hopefully that turns out.  Might buy a couple extra if the price is not too exorbitant 4i.  Can;t imagine that this is a high volume item with the bearing suppliers.

 

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Dave in Alberta

I was able to get this bearing through Brenda at Sandy Lake.  7/8 shaft, 52mm diameter replaces the bevel gear box ball bearings.  Looks to be Chinese in origin, but the B&S number is 2172256SM.Bearing.thumb.jpg.19a88210499fbf10cd1bbfb41ddcfc69.jpg

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PhanDad

The last ones I bought in the summer of 2017 from Simplicity were made in China by RB Tech:

IMG_9895.thumb.JPG.b6a1d84f7c5458de9aae35ba3c0b33c0.JPG

(Pic date is when I documented July 2017 bearing purchase).

 

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deebig

This is not a metric bearing. It is a std. 6205 but with a 7/8th bore instead of 3/4. I paid $30 for this bearing before I disassembled my BGB.....but my original bearing was fine so I did not use the China bearing because the OEM looked higher quality. OEM had 11 balls vs 9.

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Bill725
4 hours ago, deebig said:

This is not a metric bearing.

 

21 hours ago, Dave in Alberta said:

7/8 shaft, 52mm diameter

FYI, the 6205 series bearing happens to be a metric bearing with a 52 mm OD. The bearing P/N is 6205-14 and the -14 means the bore is 14/16" = 7/8", which makes it a special metric bearing. 

Edited by Bill725
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deebig
6 hours ago, Bill725 said:

 

FYI, the 6205 series bearing happens to be a metric bearing with a 52 mm OD. The bearing P/N is 6205-14 and the -14 means the bore is 14/16" = 7/8", which makes it a special metric bearing. 

you are absolutely right.....I stand corrected but 7/8 bore is not metric that is what makes it special or bastard size.

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