L S Starrett BEARING COMPANY

SKF 6213 Bearing

 

Drill Rod Bearings

To provide a longer stroker crank that has more strength than the stock VW forging or any other aftermarket forged crankshaft, the 411 center main journal is required. For that reason all of the "Berg" forged cranks are made with the 411 center main to provide a stronger cross sectional area at the center journal. To maintain proper case strength, I use a special adapter bearing (GB 157) that fits the stock case and this larger crankshaft main journal. It is a steel backed bearing, as was the one it replaced, leaving the regular (steel back) split #2 main bearing as an extra. Gary, has been installing these split #2 bearings in the #3 location for years on all engines that use a 411 center main bearing crankshaft, having the round #3 bearing as the leftover. This requires adding a dowel hole in the other half of most cases at the #3 location so it will accept the dowel. A few cases have this dowel hole from the factory, but it is likely you will need to add the hole. Gary made a drill fixture by drilling through the pin hole in an old #2 split bearing, installing that bearing in the case and drilling a pin hole about a 1/4" deep into the case at the #3 location.
Extremely simple! This provides much stronger case and crankshaft support when using the split steel backed bearings in both #2 and #3 locations. Furthermore, it is no longer necessary to remove or replace the cam/distributor drive gears from the crankshaft when working on the engine or changing main bearings. See LA CASE030 for adding dowel hole.

Precision Brand 28138 Drill Rod Bearings
Precision Brand 28138 Drill Rod Bearings
2-1/4 in
2.2500 in
Precision Brand 28133 Drill Rod Bearings
Precision Brand 28133 Drill Rod Bearings
Two Metal Shields
In Stock
Precision Brand 28135 Drill Rod Bearings
Precision Brand 28135 Drill Rod Bearings
1.2500 in
7316577345097
Precision Brand 28132 Drill Rod Bearings
Precision Brand 28132 Drill Rod Bearings
Adapter Mount
760 RPM
Precision Brand 28134 Drill Rod Bearings
Precision Brand 28134 Drill Rod Bearings
1.8750 in
Max 250°
Precision Brand 28124 Drill Rod Bearings
Precision Brand 28124 Drill Rod Bearings
0.7500 in
2050502000
Precision Brand 28127 Drill Rod Bearings
Precision Brand 28127 Drill Rod Bearings
Flange Block
0.0
Precision Brand 28126 Drill Rod Bearings
Precision Brand 28126 Drill Rod Bearings
337.2
310mm
Precision Brand 28123 Drill Rod Bearings
Precision Brand 28123 Drill Rod Bearings
53mm
653
Precision Brand 28120 Drill Rod Bearings
Precision Brand 28120 Drill Rod Bearings
Spherical Roller
Split Pillow Block
Precision Brand 28121 Drill Rod Bearings
Precision Brand 28121 Drill Rod Bearings
Lubrication Fitting
45 mm
Precision Brand 28118 Drill Rod Bearings
Precision Brand 28118 Drill Rod Bearings
Spherical Roller
3.0000 in
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